WorldWideScience

Sample records for bone-anchored hearing aid

  1. The bone-anchored hearing aid

    DEFF Research Database (Denmark)

    Foghsgaard, Søren

    2014-01-01

    The bone-anchored hearing aid (Baha) was introduced in 1977 by Tjellström and colleagues and has now been used clinically for over 30 years. Generally, the outcomes are good, and several studies have shown improved audiological- and quality of life outcomes. The principle of the Baha is, that sound...

  2. Hearing rehabilitation in Treacher Collins Syndrome with bone anchored hearing aid

    Directory of Open Access Journals (Sweden)

    José Fernando Polanski

    2015-12-01

    Full Text Available Objective: To describe a case of hearing rehabilitation with bone anchored hearing aid in a patient with Treacher Collins syndrome. Case description: 3 years old patient, male, with Treacher Collins syndrome and severe complications due to the syndrome, mostly related to the upper airway and hearing. He had bilateral atresia of external auditory canals, and malformation of the pinna. The initial hearing rehabilitation was with bone vibration arch, but there was poor acceptance due the discomfort caused by skull compression. It was prescribed a model of bone-anchored hearing aid, in soft band format. The results were evaluated through behavioral hearing tests and questionnaires Meaningful Use of Speech Scale (MUSS and Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS. Comments: The patient had a higher acceptance of the bone-anchored hearing aid compared to the traditional bone vibration arch. Audiological tests and the speech and auditory skills assessments also showed better communication and hearing outcomes. The bone-anchored hearing aid is a good option in hearing rehabilitation in this syndrome.

  3. Hearing rehabilitation in Treacher Collins Syndrome with bone anchored hearing aid

    Science.gov (United States)

    Polanski, José Fernando; Plawiak, Anna Clara; Ribas, Angela

    2015-01-01

    Objective: To describe a case of hearing rehabilitation with bone anchored hearing aid in a patient with Treacher Collins syndrome. Case description: 3 years old patient, male, with Treacher Collins syndrome and severe complications due to the syndrome, mostly related to the upper airway and hearing. He had bilateral atresia of external auditory canals, and malformation of the pinna. The initial hearing rehabilitation was with bone vibration arch, but there was poor acceptance due the discomfort caused by skull compression. It was prescribed a model of bone-anchored hearing aid, in soft band format. The results were evaluated through behavioral hearing tests and questionnaires Meaningful Use of Speech Scale (MUSS) and Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS). Comments: The patient had a higher acceptance of the bone-anchored hearing aid compared to the traditional bone vibration arch. Audiological tests and the speech and auditory skills assessments also showed better communication and hearing outcomes. The bone-anchored hearing aid is a good option in hearing rehabilitation in this syndrome. PMID:26298651

  4. Hearing rehabilitation in Treacher Collins Syndrome with bone anchored hearing aid

    OpenAIRE

    José Fernando Polanski; Anna Clara Plawiak; Angela Ribas

    2015-01-01

    Objective: To describe a case of hearing rehabilitation with bone anchored hearing aid in a patient with Treacher Collins syndrome. Case description: 3 years old patient, male, with Treacher Collins syndrome and severe complications due to the syndrome, mostly related to the upper airway and hearing. He had bilateral atresia of external auditory canals, and malformation of the pinna. The initial hearing rehabilitation was with bone vibration arch, but there was poor acceptance due the discom...

  5. The bone-anchored hearing aid : quality-of-life assessment

    NARCIS (Netherlands)

    Hol, Myrthe K S; Spath, Marian A; Krabbe, Paul F M; van der Pouw, Catharina T M; Snik, Ad F M; Cremers, Cor W R J; Mylanus, Emmanuel A M

    2004-01-01

    OBJECTIVES: To assess the impact of a bone-anchored hearing aid (BAHA) on the quality of life (QOL) of adults and to test the hypothesis that a BAHA improves QOL because otorrhea and/or skin irritations decrease. DESIGN: Prospective postal-based questionnaire study using validated health-related QOL

  6. Better performance with bone-anchored hearing aid than acoustic devices in patients with severe air-bone gap

    NARCIS (Netherlands)

    Wolf, M.J. de; Hendrix, S.; Cremers, C.W.R.J.; Snik, A.F.M.

    2011-01-01

    OBJECTIVES/HYPOTHESIS: A study performed in the 1990s with analogue linear hearing aids showed that in patients with mixed hearing loss and an air-bone gap that exceeded 25 to 30 dB, speech perception was better with a bone-anchored hearing aid (Baha) than with a conventional behind-the-ear (BTE) de

  7. Bone-anchored hearing aids are effective and associated with a high degree of satisfaction

    DEFF Research Database (Denmark)

    Gardell, Ida Sofie Kristina; Andresen, Kathrine; Faber, Christian Emil;

    2015-01-01

    INTRODUCTION: The objective of this study was to evaluate patients' satisfaction with bone-anchored hearing aids (BAHA). METHODS: This study was retrospective and based on a postal questionnaire. The study sample consisted of patients undergoing surgery at Odense University Hospital in the 1992......-2013-period. The questionnaire was a combination of Satisfaction with Amplification in Daily Life questions from the Hearing Aid Research Lab at the University of Memphis and questions used in a previous Danish study. We also used data from each patient's medical records. All information was collected...... in one-on-one conversations. CONCLUSION: BAHA is helpful in one-on-one conversations in quiet surroundings. Sound quality in group situations seems to be the main problem associated with BAHA. However, this study showed that BAHA is an effective hearing aid that is associated with a high degree...

  8. Development and application of bone-anchored hearing aid%骨锚式助听器的发展及应用

    Institute of Scientific and Technical Information of China (English)

    刘宇鹏

    2013-01-01

    Bone-anchored hearing aid is a hearing assisting technology that raise the hearing level via bone conduct and is also the only implantable hearing assisting device working by bone conduct. Because of the superior performance and simple process of implantation, it brings gospel to the patients who are not fitting the air conducting hearing devices. This article is a review of bone-anchored hearing aid from 6 aspects, including history, principle, indication, consulting, surgery and complication.

  9. Skin reactions caused by bone-anchored hearing aid (BAHA) implantation

    Institute of Scientific and Technical Information of China (English)

    Gen-di Yin; Xiangli Zeng; Peng Li

    2015-01-01

    Objective: To report a case of intractable skin reactions caused by bone-anchored hearing aid (BAHA) implantation to improve our under-standing and treatment of BAHA implantation-caused skin reactions. Methods:We reported a case of severe skin reactions caused by BAHA implantation. Related literature were also reviewed. Results:We found grade IV skin reactions, including hyperplasia around the implant, which led to the removal of the BAHA implant 10 months after implantation. The findings indicated poor skin hygiene, allergy to titanium and inadequate surgicals skills as the possible causes of the skin reaction. Conclusion: Skin adverse reactions, usually rare in BAHA implantation patients, may cause implant removal and implantation failure. We suggest to further investigate the mechanisms underlying titanium allergy. Copyright © 2016, PLA General Hospital Department of Otolaryngology Head and Neck Surgery. Production and hosting by Elsevier (Singapore) Pte Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

  10. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... one because she has experience with how hearing aids in general affect tinnitus. Tinnitus is, again, that ... want to talk about your experience with hearing aids and how people respond with their tinnitus? 00: ...

  11. Results of the implantation of bone-anchored hearing aids in patients with treacher-collins syndrome

    Directory of Open Access Journals (Sweden)

    Alexandra Kolontai de Sousa Oliveira1

    2013-04-01

    Full Text Available Introduction: Treacher-Collins syndrome is characterized by craniofacial malformations, narrowing of the external auditory canal (EAC, and, in 30% of cases, agenesis of the canal and ossicular chain defects. The use of hearing aids (HA is not possible in cases in which agenesis or stenosis of the EAC accompanies conductive deafness. In contrast, bone conduction implants such as the Bone Anchored Hearing Aid (BAHA® allow direct stimulation of the cochlea and are thus superior to conventional hearing aids in cases of severe conductive hearing loss. Objective: To present 2 cases of patients with Treacher-Collins syndrome who underwent implantation of BAHA®. Cases Reports: The first patient was a 52-year-old woman diagnosed with Treacher-Collins syndrome who presented with severe bilateral mixed hearing loss and a history of unsuccessful previous use of a bone contact conduction device. The BAHA® implantation was uneventful, and the post-operative results were good. The second patient was a 14-year-old girl who was also diagnosed with Treacher-Collins Syndrome with bilateral moderate conductive hearing loss by audiometry. The use of a bone vibrator contact device did not improve her hearing; however, implantation of a BAHA® resulted in a decreased gap postoperatively. Final comments: BAHA® hearing devices provide adequate rehabilitation and consequent improvement of the quality of life in patients with Treacher-Collins syndrome.

  12. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha system consists of a bone-anchored titanium fixture that is implanted in the mastoid bone, ... the -- great. I'm going to grab the titanium implant. And what I want you to notice ...

  13. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... up the sound, a processor, which is a computer inside the hearing aid which is correcting for ... getting more powerful, smaller, more sophisticated, just like computers. The good news is that the abutment stays ...

  14. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... experience with how hearing aids in general affect tinnitus. Tinnitus is, again, that sensation of sound even though ... can have character of roaring or pulsatile. But tinnitus is a tough thing, and Sue, do you ...

  15. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... among other injuries, lost her hearing on the right side. And she has lived the last nearly 30 years without having any hearing on the right and normal hearing on the left. And as ...

  16. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... not able to hear as well, or background noise may suddenly start up and then be an ... It allows for localization and improved hearing and noise. This device also lacks some of the disadvantages ...

  17. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... as the bone conduction thresholds, which is the test of the sensory ability of the inner ear, ... and also responses to pure tones, which would test their hearing throughout the hearing range from low, ...

  18. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... real challenge. Listening to speech in a noisy environment is also significantly impaired because hearing in a group or in a noisy environment requires hearing in stereo. The end result is ...

  19. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing ... through the abutment so the sound can then travel through the head to the functional cochlea, or ...

  20. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... talking or speaking but still not have successful communication because they did not get the words clearly ... aware of those sounds, both for safety and communication purposes. It allows for localization and improved hearing ...

  1. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... obviously hearing is still present. However, in real life day- to-day conditions, there can be a ... get your cataracts fixed, and you can see life so brilliant and so clear. All the colors ...

  2. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... all, your hearing is limited to that one good side. If someone's on the opposite side of you, ... changed, the person may have moved from the good side to the other side of you where you' ...

  3. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing for the patient. During the webcast you may email questions to the surgeon by clicking the MDirectAccess button at any time. This program represents Hartford Hospital's ongoing efforts to ...

  4. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... difficult issue to deal with because it does affect people differently. One of the things that I hear all the time is that tinnitus is much more noticeable in quiet environments. And when you're going to sleep, when you're just sitting and reading, but ...

  5. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha device uses sound vibrations, and those vibrations then are passed from the side with no functional hearing to the functioning ear internally on the opposite side. That happens very efficiently, with no loss of energy, because the placement of the device is surgically ...

  6. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... the screwlike fixture is permanently in place and well-healed, the device can be utilized. That actually takes about three to four ... is would this device address the ringing as well as the hearing problem. ... is no sound. It tends to be ringing but can have character of roaring or ...

  7. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... hearing is still present. However, in real life day- to-day conditions, there can be a significant impairment with ... coming from, but it also can occur in day-to-day situations, both socially or in a ...

  8. Three-year experience with the Sophono in children with congenital conductive unilateral hearing loss: tolerability, audiometry, and sound localization compared to a bone-anchored hearing aid.

    Science.gov (United States)

    Nelissen, Rik C; Agterberg, Martijn J H; Hol, Myrthe K S; Snik, Ad F M

    2016-10-01

    Bone conduction devices (BCDs) are advocated as an amplification option for patients with congenital conductive unilateral hearing loss (UHL), while other treatment options could also be considered. The current study compared a transcutaneous BCD (Sophono) with a percutaneous BCD (bone-anchored hearing aid, BAHA) in 12 children with congenital conductive UHL. Tolerability, audiometry, and sound localization abilities with both types of BCD were studied retrospectively. The mean follow-up was 3.6 years for the Sophono users (n = 6) and 4.7 years for the BAHA users (n = 6). In each group, two patients had stopped using their BCD. Tolerability was favorable for the Sophono. Aided thresholds with the Sophono were unsatisfactory, as they did not reach under a mean pure tone average of 30 dB HL. Sound localization generally improved with both the Sophono and the BAHA, although localization abilities did not reach the level of normal hearing children. These findings, together with previously reported outcomes, are important to take into account when counseling patients and their caretakers. The selection of a suitable amplification option should always be made deliberately and on individual basis for each patient in this diverse group of children with congenital conductive UHL.

  9. Wireless and acoustic hearing with bone-anchored hearing devices

    Science.gov (United States)

    Bosman, Arjan J.; Mylanus, Emmanuel A.M.; Hol, Myrthe K.S.; Snik, Ad F.M.

    2016-01-01

    Abstract Objective: The efficacy of wireless connectivity in bone-anchored hearing was studied by comparing the wireless and acoustic performance of the Ponto Plus sound processor from Oticon Medical relative to the acoustic performance of its predecessor, the Ponto Pro. Study sample: Nineteen subjects with more than two years' experience with a bone-anchored hearing device were included. Thirteen subjects were fitted unilaterally and six bilaterally. Design: Subjects served as their own control. First, subjects were tested with the Ponto Pro processor. After a four-week acclimatization period performance the Ponto Plus processor was measured. In the laboratory wireless and acoustic input levels were made equal. In daily life equal settings of wireless and acoustic input were used when watching TV, however when using the telephone the acoustic input was reduced by 9 dB relative to the wireless input. Results: Speech scores for microphone with Ponto Pro and for both input modes of the Ponto Plus processor were essentially equal when equal input levels of wireless and microphone inputs were used. Only the TV-condition showed a statistically significant (p <5%) lower speech reception threshold for wireless relative to microphone input. In real life, evaluation of speech quality, speech intelligibility in quiet and noise, and annoyance by ambient noise, when using landline phone, mobile telephone, and watching TV showed a clear preference (p <1%) for the Ponto Plus system with streamer over the microphone input. Due to the small number of respondents with landline phone (N = 7) the result for noise annoyance was only significant at the 5% level. Conclusion: Equal input levels for acoustic and wireless inputs results in equal speech scores, showing a (near) equivalence for acoustic and wireless sound transmission with Ponto Pro and Ponto Plus. The default 9-dB difference between microphone and wireless input when using the telephone results in a substantial

  10. Comparison of two bone anchored hearing instruments: BP100 and Ponto Pro

    DEFF Research Database (Denmark)

    Olsen, Steen Østergaard; Glad, Henrik; Nielsen, Lars Holme

    2011-01-01

    This study aimed at investigating if there were differences in auditory performance, operation, or user preference between the Ponto Pro or the BP100, two bone anchored hearing instruments (BAHI) with modern sound processing technology....

  11. A Retrospective Cohort Study on the Influence of Comorbidity on Soft Tissue Reactions, Revision Surgery, and Implant Loss in Bone-anchored Hearing Implants

    NARCIS (Netherlands)

    Besten, C.A. den; Nelissen, R.C.; Peer, P.G.M.; Faber, H.T.; Dun, C.A.; Wolf, M.J.; Kunst, H.P.M.; Cremers, C.W.R.J.; Mylanus, E.A.M.; Hol, M.K.

    2015-01-01

    OBJECTIVE: To identify risk factors for complications after bone-anchored hearing implant (BAHI) surgery. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary referral center. PATIENTS: All adult patients who received titanium bone-anchored hearing implants at our clinic between September 1,

  12. A new bone-anchored hearing implant: short-term retrospective data on implant survival and subjective benefit

    NARCIS (Netherlands)

    Nelissen, R.C.; Mylanus, E.A.M.; Kunst, H.P.M.; Pennings, R.J.E.; Snik, A.F.M.; Hol, M.K.S.

    2013-01-01

    This report provides the first short-term follow-up data on the Ponto bone-anchored hearing implant from our tertiary referral centre. Thirty-one consecutive patients with a mean age of 51 years who received the implant between October 2010 and December 2011 were included retrospectively in this stu

  13. Hearing Aids

    Science.gov (United States)

    ... more in both quiet and noisy situations. Hearing aids help people who have hearing loss from damage ... your doctor. There are different kinds of hearing aids. They differ by size, their placement on or ...

  14. Hearing Aids

    Science.gov (United States)

    ... prefer the open-fit hearing aid because their perception of their voice does not sound “plugged up.” ... My voice sounds too loud. The “plugged-up” sensation that causes a hearing aid user’s voice to ...

  15. Types of Hearing Aids

    Science.gov (United States)

    ... Devices Consumer Products Hearing Aids Types of Hearing Aids Share Tweet Linkedin Pin it More sharing options ... some features for hearing aids? What are hearing aids? Hearing aids are sound-amplifying devices designed to ...

  16. Hearing Aid

    Science.gov (United States)

    ... and Food and Drug Administration Staff FDA permits marketing of new laser-based hearing aid with potential ... feeds Follow FDA on Twitter Follow FDA on Facebook View FDA videos on YouTube View FDA photos ...

  17. A new wide-diameter bone-anchored hearing implant-prospective 1-year data on complications, implant stability, and survival

    DEFF Research Database (Denmark)

    Foghsgaard, Søren; Caye-Thomasen, Per

    2014-01-01

    OBJECTIVE: To investigate a new wide bone-anchored hearing implant considering initial stability, stability over time, implant loss, and skin reaction. STUDY DESIGN: Consecutive, prospective case series. SETTING: Tertiary referral center. PATIENTS: Twenty adult patients were enrolled. All...... operations were 1-stage, single-incision technique with subcutaneous reduction. INTERVENTION(S): Measurement of implant stability. MAIN OUTCOME MEASURE(S): Implant stability quotient (ISQ) values were recorded using resonance frequency analysis at the time of implantation and at 10 days, 6 weeks, 6 months...

  18. How to Get Hearing Aids

    Science.gov (United States)

    ... Consumer Products Hearing Aids How to get Hearing Aids Share Tweet Linkedin Pin it More sharing options ... my hearing aids? How do I get hearing aids? To get hearing aids, you should first have ...

  19. Development of cartilage conduction hearing aid

    Directory of Open Access Journals (Sweden)

    H. Hosoi

    2010-04-01

    Full Text Available Purpose: The potential demand for hearing aids is increasing in accordance with aging of populations in many developed countries. Because certain patients cannot use air conduction hearing aids, they usually use bone conduction hearing aids. However, bone does not transmit sound as efficiently as air, and bone conduction hearing aids require surgery (bone anchored hearing aid or great pressure to the skull. The first purpose of this study is to examine the efficacy of a new sound conduction pathway via the cartilage. The second purpose is to develop a hearing aid with a cartilage conduction transducer for patients who cannot use regular air conduction hearing aids.Design/methodology/approach: We examined the hearing ability of a patient with atresia of both external auditory meatuses via three kinds of conduction pathways (air, bone, and cartilage. After the best position for the cartilage conduction transducer was found, audiometric evaluation was performed for his left ear with an insertion earphone (air conduction, a bone conduction transducer, and a cartilage conduction transducer. Then we made a new hearing aid using cartilage conduction and got subjective data from the patients.Findings: The tragal cartilage was the best position for the cartilage conduction transducer. The patient’s mean hearing levels were 58.3 dBHL, 6.7 dBHL, and 3.3 dBHL for air conduction, bone conduction, and cartilage conduction respectively. The hearing ability of the patients obtained from the cartilage conduction hearing aid was comparable to those from the bone conduction hearing aid.Practical implications: Hearing levels using cartilage conduction are very similar to those via bone conduction. Cartilage conduction hearing aids may overcome the practical disadvantages of bone conduction hearing aids such as pain and the need for surgery.Originality/value: We have clarified the efficacy of the cartilage conduction pathway and developed a prototype

  20. Profound mixed hearing loss: bone-anchored hearing aid system or cochlear implant?

    NARCIS (Netherlands)

    Verhaegen, V.J.O.; Mulder, J.J.S.; Mylanus, E.A.M.; Cremers, C.W.R.J.; Snik, A.F.M.

    2009-01-01

    OBJECTIVES: We evaluated 5 patients who were changed over from a Baha Cordelle to a cochlear implant (CI). Moreover, the level of phoneme score was determined at which a Baha Cordelle user was better helped with a CI. METHODS: We offer descriptive case reports and a retrospective evaluation of speec

  1. Music and Hearing Aids

    OpenAIRE

    Madsen, Sara M. K.; Moore, Brian C. J.

    2014-01-01

    The signal processing and fitting methods used for hearing aids have mainly been designed to optimize the intelligibility of speech. Little attention has been paid to the effectiveness of hearing aids for listening to music. Perhaps as a consequence, many hearing-aid users complain that they are not satisfied with their hearing aids when listening to music. This issue inspired the Internet-based survey presented here. The survey was designed to identify the nature and prevalence of problems a...

  2. Hearing Aid

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    A man realized that he needed to purchase ahearing aid, but he was unwilling to spend muchmoney. "How much do they run?"he asked theclerk. "That depends," said. the salesman. "Theyrun from 2 to 2000."

  3. Hearing Aid and children

    Directory of Open Access Journals (Sweden)

    Jamileh Fatahi

    2002-07-01

    Full Text Available In order to develop oral communication, hearing impaired infants and young children must be able to hear speech comfortably and consistently. To day children with all degrees of hearing loss may be condidates for some kinds of amlification. As children differ from adults, many Factors should be consider in hearing aid selection, evaluation and fitting. For example the child age when he or she is candidate for custom instruments? Do we consider programmable Hearing aid? Are multi memory instruments appropriate for them? What about directional microphones? What style of hearing aid do we select? In this paper such questions are Answered.

  4. Music and hearing aids.

    Science.gov (United States)

    Madsen, Sara M K; Moore, Brian C J

    2014-01-01

    The signal processing and fitting methods used for hearing aids have mainly been designed to optimize the intelligibility of speech. Little attention has been paid to the effectiveness of hearing aids for listening to music. Perhaps as a consequence, many hearing-aid users complain that they are not satisfied with their hearing aids when listening to music. This issue inspired the Internet-based survey presented here. The survey was designed to identify the nature and prevalence of problems associated with listening to live and reproduced music with hearing aids. Responses from 523 hearing-aid users to 21 multiple-choice questions are presented and analyzed, and the relationships between responses to questions regarding music and questions concerned with information about the respondents, their hearing aids, and their hearing loss are described. Large proportions of the respondents reported that they found their hearing aids to be helpful for listening to both live and reproduced music, although less so for the former. The survey also identified problems such as distortion, acoustic feedback, insufficient or excessive gain, unbalanced frequency response, and reduced tone quality. The results indicate that the enjoyment of listening to music with hearing aids could be improved by an increase of the input and output dynamic range, extension of the low-frequency response, and improvement of feedback cancellation and automatic gain control systems. PMID:25361601

  5. Music and Hearing Aids

    Directory of Open Access Journals (Sweden)

    Sara M. K. Madsen

    2014-10-01

    Full Text Available The signal processing and fitting methods used for hearing aids have mainly been designed to optimize the intelligibility of speech. Little attention has been paid to the effectiveness of hearing aids for listening to music. Perhaps as a consequence, many hearing-aid users complain that they are not satisfied with their hearing aids when listening to music. This issue inspired the Internet-based survey presented here. The survey was designed to identify the nature and prevalence of problems associated with listening to live and reproduced music with hearing aids. Responses from 523 hearing-aid users to 21 multiple-choice questions are presented and analyzed, and the relationships between responses to questions regarding music and questions concerned with information about the respondents, their hearing aids, and their hearing loss are described. Large proportions of the respondents reported that they found their hearing aids to be helpful for listening to both live and reproduced music, although less so for the former. The survey also identified problems such as distortion, acoustic feedback, insufficient or excessive gain, unbalanced frequency response, and reduced tone quality. The results indicate that the enjoyment of listening to music with hearing aids could be improved by an increase of the input and output dynamic range, extension of the low-frequency response, and improvement of feedback cancellation and automatic gain control systems.

  6. Music and hearing aids.

    Science.gov (United States)

    Madsen, Sara M K; Moore, Brian C J

    2014-10-31

    The signal processing and fitting methods used for hearing aids have mainly been designed to optimize the intelligibility of speech. Little attention has been paid to the effectiveness of hearing aids for listening to music. Perhaps as a consequence, many hearing-aid users complain that they are not satisfied with their hearing aids when listening to music. This issue inspired the Internet-based survey presented here. The survey was designed to identify the nature and prevalence of problems associated with listening to live and reproduced music with hearing aids. Responses from 523 hearing-aid users to 21 multiple-choice questions are presented and analyzed, and the relationships between responses to questions regarding music and questions concerned with information about the respondents, their hearing aids, and their hearing loss are described. Large proportions of the respondents reported that they found their hearing aids to be helpful for listening to both live and reproduced music, although less so for the former. The survey also identified problems such as distortion, acoustic feedback, insufficient or excessive gain, unbalanced frequency response, and reduced tone quality. The results indicate that the enjoyment of listening to music with hearing aids could be improved by an increase of the input and output dynamic range, extension of the low-frequency response, and improvement of feedback cancellation and automatic gain control systems.

  7. Hearing Aids and Music

    OpenAIRE

    Chasin, Marshall; Russo, Frank A.

    2004-01-01

    Historically, the primary concern for hearing aid design and fitting is optimization for speech inputs. However, increasingly other types of inputs are being investigated and this is certainly the case for music. Whether the hearing aid wearer is a musician or merely someone who likes to listen to music, the electronic and electro-acoustic parameters described can be optimized for music as well as for speech. That is, a hearing aid optimally set for music can be optimally set for speech, even...

  8. Hearing aid and Noise

    OpenAIRE

    Ahmad Reza Nazeri

    1999-01-01

    Prescription of hearing aid is an extensive special category of knowledge in the field of audiology. This article is aimed at discussing the function of hearing aid and also management of patients in the noisy environments and presenting solutions to overcome problems regarding to this issue along with taking a look to the equipments prepared nowadays to cope with noisy situations.

  9. Hearing aid adjustment

    DEFF Research Database (Denmark)

    Heinemann, Trine; Matthews, Ben; Raudaskoski, Pirkko Liisa

    2012-01-01

    to the interaction during hearing aid fitting. This report of a Danish pilot study describes two such problems. The first problem arises from the requirement that the audiologist needs to ‘translate’ the patient’s subjective hearing description for making technological decisions. The second problem is the way...... in which the hearing aid user’s implicit and often unrealistic expectations are handled. This kind of research has potential application for developing a model of best practices....

  10. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... skin to allow removal of some of the soft tissue where the screwlike fixture will be anchored. The ... screen, acting as a hinge. Beneath that the soft tissue consisting of fat and some muscle is removed. ...

  11. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... and out. It's important that we don't heat the bone up too much. And you can ... way give her -- help her get over the challenges that single-sided deafness presents. But important to ...

  12. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... always changing. And technology even with the Baha system has changed recently. It's always getting more powerful, smaller, more sophisticated, just like computers. The good news is that the abutment stays ...

  13. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... a candidate at all for any of this technology. So what I'm going to have next ... whether the fixture can accommodate the ever-shrinking technology in today's world. Obviously if the device becomes ...

  14. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... And that consists, again, of the microphone, a volume control, and as the audiologist, I can also ... This has a microphone inside. And then the volume was increased until she indicated that she was ...

  15. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... That happens very efficiently, with no loss of energy, because the placement of the device is surgically ... superficial on the skin, the transference of that energy is less efficient, and therefore the sound quality ...

  16. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... to-day situations, both socially or in a work situation, for example, a meeting where you may ... enough to respond appropriately. The way the device works is it uses the fact that sound is ...

  17. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... noise. This device also lacks some of the disadvantages of more conventional treatments for that. It used ... snaps on to the abutment. And then we wind a little gauze around, the whole idea being ...

  18. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... After sustaining a traumatic head injury in a car accident at age five, Jessica Fett's parents noticed ... even the simple things, like driving in the car with my kids, they're all in the ...

  19. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... deafness, live from Hartford Hospital in Hartford, Connecticut. I'm Dr. Gregory Bonaiuto. I'm your host for the program. Next to ... who is an audiologist practicing at Hartford Hospital. I'm joined in the OR by Dr. Marc ...

  20. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... Single-sided deafness has been underestimated in the impact on a patient for many years because the ... a candidate at all for any of this technology. So what I'm going to have next ...

  1. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... can expect to return to after this, regarding sports, swimming, risk of infection, and those kinds of ... off. And likewise, for some of the contact sports, you can wear a helmet, and if the ...

  2. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... MD: One other true advantage of the Baha system is that we're not operating on the ear itself, so there really is ... webcast. On behalf of my colleagues and the operating room staff at Hartford Hospital, ... of the Baha system surgery for the treatment of single-sided deafness. ...

  3. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... an interference. 00:06:33 One of the problems with single-sided deafness is the head is ... would be transmitted to the better side. The problem with that type of a device is that ...

  4. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... working together. Now, that can be both a safety issue in terms of knowing where some hazard ... and be aware of those sounds, both for safety and communication purposes. It allows for localization and ...

  5. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... This slide serves to demonstrate that there is care needed for the surgical wound postoperatively. And that ... week later, and then Jessica has to take care of her abutment a little by just making ...

  6. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... webcast. Over the next hour, we will demonstrate a Baha surgery for single-sided deafness, live from ... we go to Dr. Eisen, I have just a few reminders for our audience. First, we will ...

  7. Buying a Hearing Aid

    Science.gov (United States)

    ... Treatments & Cures Buying a Hearing Aid Cancer Treatment Scams Cancer Treatment Scams CURE-ious Bookmark Direct-to-Consumer Genetic Tests ... Money Privacy, Identity & Online Security Blog Video & Media Scam Alerts Get health and fitness updates by email ...

  8. Hearing Aid Personalization

    DEFF Research Database (Denmark)

    Nielsen, Jens Brehm; Nielsen, Jakob; Jensen, Bjørn Sand;

    2013-01-01

    Modern digital hearing aids require and offer a great level of personalization. Today, this personalization is not performed based directly on what the user actually perceives, but on a hearing-care professional’s interpretation of what the user explains about what is perceived. In this paper......, an interactive personalization system based on Gaussian process regression and active learning is proposed, which personalize the hearing aids based directly on what the user perceives. Preliminary results demonstrate a significant difference between a truly personalized setting obtained with the proposed system...

  9. Parent Hearing Aid Experiences

    Science.gov (United States)

    Munoz, Karen; Roberts, Mallory; Mullings, Day; Harward, Richard

    2012-01-01

    This study addresses parent experiences in obtaining and managing hearing aids for their young child. The purpose was to identify challenges parents encounter to determine what state agencies can do to improve parent access to amplification. Data were collected July through September of 2010; 40 parents of children ages birth to 3 years old…

  10. Influence of Implantable Hearing Aids and Neuroprosthesison Music Perception

    Directory of Open Access Journals (Sweden)

    Torsten Rahne

    2012-01-01

    Full Text Available The identification and discrimination of timbre are essential features of music perception. One dominating parameter within the multidimensional timbre space is the spectral shape of complex sounds. As hearing loss interferes with the perception and enjoyment of music, we approach the individual timbre discrimination skills in individuals with severe to profound hearing loss using a cochlear implant (CI and normal hearing individuals using a bone-anchored hearing aid (Baha. With a recent developed behavioral test relying on synthetically sounds forming a spectral continuum, the timbre difference was changed adaptively to measure the individual just noticeable difference (JND in a forced-choice paradigm. To explore the differences in timbre perception abilities caused by the hearing mode, the sound stimuli were varied in their fundamental frequency, thus generating different spectra which are not completely covered by a CI or Baha system. The resulting JNDs demonstrate differences in timbre perception between normal hearing individuals, Baha users, and CI users. Beside the physiological reasons, also technical limitations appear as the main contributing factors.

  11. Influence of implantable hearing aids and neuroprosthesison music perception.

    Science.gov (United States)

    Rahne, Torsten; Böhme, Lars; Götze, Gerrit

    2012-01-01

    The identification and discrimination of timbre are essential features of music perception. One dominating parameter within the multidimensional timbre space is the spectral shape of complex sounds. As hearing loss interferes with the perception and enjoyment of music, we approach the individual timbre discrimination skills in individuals with severe to profound hearing loss using a cochlear implant (CI) and normal hearing individuals using a bone-anchored hearing aid (Baha). With a recent developed behavioral test relying on synthetically sounds forming a spectral continuum, the timbre difference was changed adaptively to measure the individual just noticeable difference (JND) in a forced-choice paradigm. To explore the differences in timbre perception abilities caused by the hearing mode, the sound stimuli were varied in their fundamental frequency, thus generating different spectra which are not completely covered by a CI or Baha system. The resulting JNDs demonstrate differences in timbre perception between normal hearing individuals, Baha users, and CI users. Beside the physiological reasons, also technical limitations appear as the main contributing factors. PMID:22645422

  12. Influence of Implantable Hearing Aids and Neuroprosthesison Music Perception

    Science.gov (United States)

    Rahne, Torsten; Böhme, Lars; Götze, Gerrit

    2012-01-01

    The identification and discrimination of timbre are essential features of music perception. One dominating parameter within the multidimensional timbre space is the spectral shape of complex sounds. As hearing loss interferes with the perception and enjoyment of music, we approach the individual timbre discrimination skills in individuals with severe to profound hearing loss using a cochlear implant (CI) and normal hearing individuals using a bone-anchored hearing aid (Baha). With a recent developed behavioral test relying on synthetically sounds forming a spectral continuum, the timbre difference was changed adaptively to measure the individual just noticeable difference (JND) in a forced-choice paradigm. To explore the differences in timbre perception abilities caused by the hearing mode, the sound stimuli were varied in their fundamental frequency, thus generating different spectra which are not completely covered by a CI or Baha system. The resulting JNDs demonstrate differences in timbre perception between normal hearing individuals, Baha users, and CI users. Beside the physiological reasons, also technical limitations appear as the main contributing factors. PMID:22645422

  13. An introduction to hearing aids

    Science.gov (United States)

    Dyrlund, Ole

    2003-04-01

    This presentation reviews hearing-aid development from analog to advanced digital technology. A basic hearing aid consists of a microphone, an amplification circuit that provides a gain that varies with frequency to accommodate variations in hearing loss with frequency, and a small earphone. In recent years, hearing aid technology has developed rapidly. Digital hearing aids have become commonplace and their share of the marketplace is increasing rapidly. Therefore, the main focus of this talk is signal-processing schemes in advanced digital hearing aids, including microphones with digitally controlled directional characteristics, wide-dynamic-range compression in multiple channels that allow the compression characteristics to vary with frequency, noise reduction, and feedback cancellation. Each of these signal-processing functions help address the needs of individuals with hearing losses.

  14. Self-Fitting Hearing Aids

    OpenAIRE

    Keidser, Gitte; Convery, Elizabeth

    2016-01-01

    A self-contained, self-fitting hearing aid (SFHA) is a device that enables the user to perform both threshold measurements leading to a prescribed hearing aid setting and fine-tuning, without the need for audiological support or access to other equipment. The SFHA has been proposed as a potential solution to address unmet hearing health care in developing countries and remote locations in the developed world and is considered a means to lower cost and increase uptake of hearing aids in develo...

  15. Comparing Analog and Digital Hearing Aids in Reducing Hearing Disability

    OpenAIRE

    Ghassem Mohammad Khani; Mohammad Hassan Khalesi; Soghrat Faghih Zadeh; Bahieh Kohansal; Zahra Jafari

    2004-01-01

    Objective: Comparing analog and digital hearing aids reducing disability caused by hearing deficiency among moderate to severe sensorineural hearing-impaired persons. Method and Material: This descriptive-analytic study was carried out on two groups of subjects participated in this study in some audiology clinics of hearing aid since May 2002 to October 2003. Twenty subjects wore analog hearing aids and twenty one subjects wore digital hearing aids. In this study , no subject had previous mid...

  16. Hearing Aids Communication

    DEFF Research Database (Denmark)

    impacted by hearing loss and (non-) use of hearing technologies. The researchers report on pilot studies from Australia, Denmark, Finland, Germany, Switzerland and the USA. Using Conversation Analysis, the studies identify problems and serve as points of departure for possible solutions. Researchers...... and practitioners from the different disciplines (medicine, audiology, hearing rehabilitation, User Centered Design, Conversation Analysis, change business) as well as users of hearing technologies comment on this approach....

  17. Hearing Aid with Visual Indicator

    DEFF Research Database (Denmark)

    2004-01-01

    The invention comprises a hearing aid, which has a casing containing a signal receiving part for receiving an audio signal, an audio transducer for providing an audio signal to the user, a signal transmission path between the signal receiving part and the audio transducer, whereby a battery...... is provided for powering the signal receiving part, the signal path and the audio transducer, and where further means are provided for assessing the function of the hearing aid and for generating an electrical indication signal which indicates the function of the hearing aid and where further means...... are provided for intermittently generating a power signal in response to the electrical indication signal and where means are provided for converting the power signal into a light signal, such that the light signal is visible from outside the hearing aid....

  18. A Hearing Aid Primer 1

    Science.gov (United States)

    Yetter, Carol J.

    2009-01-01

    This hearing aid primer is designed to define the differences among the three levels of hearing instrument technology: conventional analog circuit technology (most basic), digitally programmable/analog circuit technology (moderately advanced), and fully digital technology (most advanced). Both moderate and advanced technologies mean that hearing…

  19. 21 CFR 874.3300 - Hearing Aid.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Hearing Aid. 874.3300 Section 874.3300 Food and... EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3300 Hearing Aid. (a) Identification. A hearing aid is wearable sound-amplifying device that is intended to compensate for impaired hearing....

  20. Hearing Aid Fitting & Electrophysiologic Procedure

    Directory of Open Access Journals (Sweden)

    Bahram Jalaei

    2001-05-01

    Full Text Available Rehabilitation of deaf individual is one of the important subjects that has attracted attention of many researchers during past centuries. Different opinions have been established in this direction. Electrophysiologic tests were established and developed parallel to developments in rehabilitation. Therefore, opinion of using electrophysiologic test for evaluation and fitting of hearing aid became gradually popular. Ultimately, the electrophysiologic tests are used in evaluation and fitting of hearing aid in two ways: 1-Direct way 2- Indirect way "nIn direct way aided ABR is obtained and special attention is paid to wave V. This technique has many difficulties. Inindirect way, electrophysiologic tests such, ECochG, OAE and ABR, AMLR, ALR and P300 and other objective tests are used, especially in infants and neonates for evaluating the state of hearing. Researches are continuing in this field. It is probable to have aided electrophysiologic responses with speech stimuli in near future.

  1. Using Speech Recall in Hearing Aid Fitting and Outcome Evaluation Under Ecological Test Conditions.

    Science.gov (United States)

    Lunner, Thomas; Rudner, Mary; Rosenbom, Tove; Ågren, Jessica; Ng, Elaine Hoi Ning

    2016-01-01

    In adaptive Speech Reception Threshold (SRT) tests used in the audiological clinic, speech is presented at signal to noise ratios (SNRs) that are lower than those generally encountered in real-life communication situations. At higher, ecologically valid SNRs, however, SRTs are insensitive to changes in hearing aid signal processing that may be of benefit to listeners who are hard of hearing. Previous studies conducted in Swedish using the Sentence-final Word Identification and Recall test (SWIR) have indicated that at such SNRs, the ability to recall spoken words may be a more informative measure. In the present study, a Danish version of SWIR, known as the Sentence-final Word Identification and Recall Test in a New Language (SWIRL) was introduced and evaluated in two experiments. The objective of experiment 1 was to determine if the Swedish results demonstrating benefit from noise reduction signal processing for hearing aid wearers could be replicated in 25 Danish participants with mild to moderate symmetrical sensorineural hearing loss. The objective of experiment 2 was to compare direct-drive and skin-drive transmission in 16 Danish users of bone-anchored hearing aids with conductive hearing loss or mixed sensorineural and conductive hearing loss. In experiment 1, performance on SWIRL improved when hearing aid noise reduction was used, replicating the Swedish results and generalizing them across languages. In experiment 2, performance on SWIRL was better for direct-drive compared with skin-drive transmission conditions. These findings indicate that spoken word recall can be used to identify benefits from hearing aid signal processing at ecologically valid, positive SNRs where SRTs are insensitive.

  2. Using Speech Recall in Hearing Aid Fitting and Outcome Evaluation Under Ecological Test Conditions.

    Science.gov (United States)

    Lunner, Thomas; Rudner, Mary; Rosenbom, Tove; Ågren, Jessica; Ng, Elaine Hoi Ning

    2016-01-01

    In adaptive Speech Reception Threshold (SRT) tests used in the audiological clinic, speech is presented at signal to noise ratios (SNRs) that are lower than those generally encountered in real-life communication situations. At higher, ecologically valid SNRs, however, SRTs are insensitive to changes in hearing aid signal processing that may be of benefit to listeners who are hard of hearing. Previous studies conducted in Swedish using the Sentence-final Word Identification and Recall test (SWIR) have indicated that at such SNRs, the ability to recall spoken words may be a more informative measure. In the present study, a Danish version of SWIR, known as the Sentence-final Word Identification and Recall Test in a New Language (SWIRL) was introduced and evaluated in two experiments. The objective of experiment 1 was to determine if the Swedish results demonstrating benefit from noise reduction signal processing for hearing aid wearers could be replicated in 25 Danish participants with mild to moderate symmetrical sensorineural hearing loss. The objective of experiment 2 was to compare direct-drive and skin-drive transmission in 16 Danish users of bone-anchored hearing aids with conductive hearing loss or mixed sensorineural and conductive hearing loss. In experiment 1, performance on SWIRL improved when hearing aid noise reduction was used, replicating the Swedish results and generalizing them across languages. In experiment 2, performance on SWIRL was better for direct-drive compared with skin-drive transmission conditions. These findings indicate that spoken word recall can be used to identify benefits from hearing aid signal processing at ecologically valid, positive SNRs where SRTs are insensitive. PMID:27355764

  3. Challenges in IC design for hearing aids

    DEFF Research Database (Denmark)

    Jørgensen, Ivan Harald Holger

    2012-01-01

    Designing modern hearing aids is a formidable challenge. The size of hearing aids is constantly decreasing, making them virtually invisible today. Still, as in all other modern electronics, more and more features are added to these devices driven by the development in modern IC technology....... The demands for performance and features at very low supply voltage and power consumption constantly prove a challenge to the physical design of hearing aids and not at least the design of the ICs for these. As a result of this all large hearing aid manufacturers use fully customized ASICs in their products...... to produce a competitive advantage. This presentation will give a brief insight into the hearing aid market and industry, a brief view of the historic development of hearing aids and an introduction to how a modern hearing is constructed showing the amplifier as the key component in the modern hearing aid...

  4. The Future of Hearing Aid Technology

    OpenAIRE

    Edwards, Brent

    2007-01-01

    Hearing aids have advanced significantly over the past decade, primarily due to the maturing of digital technology. The next decade should see an even greater number of innovations to hearing aid technology, and this article attempts to predict in which areas the new developments will occur. Both incremental and radical innovations in digital hearing aids will be driven by research advances in the following fields: (1) wireless technology, (2) digital chip technology, (3) hearing science, and...

  5. Hearing aids with no batteries

    DEFF Research Database (Denmark)

    Day, Dennis

    2011-01-01

    part of design practices concerning the development of hearing aids. Within design studies, the idea of a skilled practitioner has a host of brothers and sisters all prefaced with the family name 'skilled'- skilled users, skilled workers, skilled employees - but the basic idea is the same for all......In this paper I wish to offer a characterization of 'skilled practitioners' from an Ethnomethodological perspective. The skilled practitioner in question is a generic 'hard of hearing' person. The ambition is that such a characterization, both in its making and its final state, may be an intrinsic...... might be realized through the introspective and observational study of the 'natural' techniques the hard of hearing employ in everyday life....

  6. Self-Fitting Hearing Aids

    Directory of Open Access Journals (Sweden)

    Gitte Keidser

    2016-04-01

    Full Text Available A self-contained, self-fitting hearing aid (SFHA is a device that enables the user to perform both threshold measurements leading to a prescribed hearing aid setting and fine-tuning, without the need for audiological support or access to other equipment. The SFHA has been proposed as a potential solution to address unmet hearing health care in developing countries and remote locations in the developed world and is considered a means to lower cost and increase uptake of hearing aids in developed countries. This article reviews the status of the SFHA and the evidence for its feasibility and challenges and predicts where it is heading. Devices that can be considered partly or fully self-fitting without audiological support were identified in the direct-to-consumer market. None of these devices are considered self-contained as they require access to other hardware such as a proprietary interface, computer, smartphone, or tablet for manipulation. While there is evidence that self-administered fitting processes can provide valid and reliable results, their success relies on user-friendly device designs and interfaces and easy-to-interpret instructions. Until these issues have been sufficiently addressed, optional assistance with the self-fitting process and on-going use of SFHAs is recommended. Affordability and a sustainable delivery system remain additional challenges for the SFHA in developing countries. Future predictions include a growth in self-fitting products, with most future SFHAs consisting of earpieces that connect wirelessly with a smartphone and providers offering assistance through a telehealth infrastructure, and the integration of SFHAs into the traditional hearing health-care model.

  7. Efficient individualization of hearing aid processed sound

    DEFF Research Database (Denmark)

    Nielsen, Jens Brehm; Nielsen, Jakob

    2013-01-01

    Due to the large amount of options offered by the vast number of adjustable parameters in modern digital hearing aids, it is becoming increasingly daunting—even for a fine-tuning professional—to perform parameter fine tuning to satisfactorily meet the preference of the hearing aid user. In addition......, the communication between the fine-tuning professional and the hearing aid user might muddle the task. In the present paper, an interactive system is proposed to ease and speed up fine tuning of hearing aids to suit the preference of the individual user. The system simultaneously makes the user conscious of his own...... preferences while the system itself learns the user’s preference. Since the learning is based on probabilistic modeling concepts, the system handles inconsistent user feedback efficiently. Experiments with hearing impaired subjects show that the system quickly discovers individual preferred hearing-aid...

  8. General Framework of Hearing Aid Fitting Management.

    Science.gov (United States)

    Oh, Soo Hee; Lee, Junghak

    2016-04-01

    Hearing aids are one of the most widely used treatment options for the hearing impaired and optimal outcomes of hearing aids are supported by comprehensive hearing aid fitting protocols. Currently, the term 'hearing aid fitting' is prevalently used among service and industry sectors with its comprehensive procedures not systematically explicated. In addition, a variety of non-normalized guidelines for hearing aid fitting has led to non-uniform care, outcome variability, and dissatisfaction of the use of hearing aids. The main purpose of the present study is to suggest a general framework of standardized practice for hearing aid fitting management including its pre- and post-fitting stages. The management framework centers on its fitting process with its prior steps of assessment as well as its posterior steps of follow-up, thereby eliminating diverging interpretations and non-uniform practices. Outcomes of this study are also expected to improve potential benefits such as quality of hearing aid fitting, user satisfaction, and cost effectiveness across relevant stakeholders.

  9. General Framework of Hearing Aid Fitting Management.

    Science.gov (United States)

    Oh, Soo Hee; Lee, Junghak

    2016-04-01

    Hearing aids are one of the most widely used treatment options for the hearing impaired and optimal outcomes of hearing aids are supported by comprehensive hearing aid fitting protocols. Currently, the term 'hearing aid fitting' is prevalently used among service and industry sectors with its comprehensive procedures not systematically explicated. In addition, a variety of non-normalized guidelines for hearing aid fitting has led to non-uniform care, outcome variability, and dissatisfaction of the use of hearing aids. The main purpose of the present study is to suggest a general framework of standardized practice for hearing aid fitting management including its pre- and post-fitting stages. The management framework centers on its fitting process with its prior steps of assessment as well as its posterior steps of follow-up, thereby eliminating diverging interpretations and non-uniform practices. Outcomes of this study are also expected to improve potential benefits such as quality of hearing aid fitting, user satisfaction, and cost effectiveness across relevant stakeholders. PMID:27144226

  10. General Framework of Hearing Aid Fitting Management

    Science.gov (United States)

    Oh, Soo Hee

    2016-01-01

    Hearing aids are one of the most widely used treatment options for the hearing impaired and optimal outcomes of hearing aids are supported by comprehensive hearing aid fitting protocols. Currently, the term 'hearing aid fitting' is prevalently used among service and industry sectors with its comprehensive procedures not systematically explicated. In addition, a variety of non-normalized guidelines for hearing aid fitting has led to non-uniform care, outcome variability, and dissatisfaction of the use of hearing aids. The main purpose of the present study is to suggest a general framework of standardized practice for hearing aid fitting management including its pre- and post-fitting stages. The management framework centers on its fitting process with its prior steps of assessment as well as its posterior steps of follow-up, thereby eliminating diverging interpretations and non-uniform practices. Outcomes of this study are also expected to improve potential benefits such as quality of hearing aid fitting, user satisfaction, and cost effectiveness across relevant stakeholders. PMID:27144226

  11. Noise-induced hearing loss and hearing aids requirement

    OpenAIRE

    C. Giordano; Garzaro, M; Nadalin, J; Pecorari, G; Boggero, R; ARGENTERO, P.; Albera, R

    2008-01-01

    Subjective disturbances, due to hearing loss, are auditory disability and handicap which can be evaluated with a questionnaire. The present study refers to a population of industrial workers affected by noise-induced hearing loss. Aim of the study is to identify the minimal level of hearing loss over which the patient felt changes in his quality of life, and the average auditory threshold at which the patient considered the application of a hearing aid useful or necessary. The sample comprise...

  12. Hearing Aids May Help Keep Seniors' Minds Sharp

    Science.gov (United States)

    ... https://medlineplus.gov/news/fullstory_158532.html Hearing Aids May Help Keep Seniors' Minds Sharp Ability to ... people with hearing loss. "We know that hearing aids can keep older adults with hearing loss more ...

  13. Hearing aid comprising an array of microphones

    NARCIS (Netherlands)

    Boone, M.M.; Berkhout, A.J.; Merks, I.L.D.M.

    1999-01-01

    Hearing aid for improving the hearing ability of the hard of hearing, comprising an array of microphones, the electrical output signals of which are fed to at least one transmission path belonging to an ear. Means are provided for deriving two array output signals from the output signals of the micr

  14. Hearing Aids and Personal Sound Amplifiers: Know the Difference

    Science.gov (United States)

    ... For Consumers Home For Consumers Consumer Updates Hearing Aids and Personal Sound Amplifiers: Know the Difference Share ... or use them as substitutes—for approved hearing aids. "Hearing aids and personal sound amplification products (PSAPS) ...

  15. Wireless communication for hearing aid system

    DEFF Research Database (Denmark)

    Nour, Baqer

    This thesis focuses on the wireless coupling between hearing aids close to a human head. Hearing aids constitute devices withadvanced technology and the wireless communication enables the introduction of a range of completely new functionalities. Such devices are small and the available power...

  16. Introduction to audiology: Some basics about hearing loss, hearing technologies and barriers to hearing aid use

    DEFF Research Database (Denmark)

    Mourtou, Eleni; Meis, Markus

    2012-01-01

    This chapter provides background information for researchers who wish to become familiar with some basic medical and audiological aspects of hearing loss and the technology of hearing aids. It introduces (1) the disciplines involved in research on hearing loss, (2) the medical categories of hearing...... loss and their various effects on communication, (3) the different degrees of hearing loss as defined by different national and international organizations, (4) statistics on the preva- lence of hearing loss worldwide, (5) some technological aspects of hearing instruments, (6) sta- tistics on non......-usage of hearing instruments worldwide, and (7) barriers to using hearing aids. Since hearing loss is a worldwide pervasive phenomenon which is likely to increase even further in the future, the authors point out that an understanding of the non-use of hearing aids is crucial....

  17. HEARING AID. MEASUREMENT OF ELECTROACOUSTICAL CHARACTERISTICS

    Directory of Open Access Journals (Sweden)

    S. J. Pérez-Ruiz

    2004-12-01

    Full Text Available In this work we show the results obtained from several measurements, on hearing aid (HA prototype carried out atthe Acoustic Laboratory of the Centro de Ciencias Aplicadas y Desarrollo Tecnológico (CCADET at the UniversidadNacional Autónoma de México (UNAM. The hearing aid has been developed at the Electronics Laboratory of thesame Center. All the electroacoustic measurements have been made according to the recommendationsestablished in the ANSI and IEC Standards for hearing aids.

  18. 21 CFR 874.3330 - Master hearing aid.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Master hearing aid. 874.3330 Section 874.3330 Food... DEVICES EAR, NOSE, AND THROAT DEVICES Prosthetic Devices § 874.3330 Master hearing aid. (a) Identification. A master hearing aid is an electronic device intended to simulate a hearing aid during...

  19. Investigation of internal feedback in hearing aids

    DEFF Research Database (Denmark)

    Friis, Lars

    2009-01-01

    There are many aesthetics and structural design requirements to modern hearing aids and their size has been reduced considerably during the last decades. This has led to designs where the receiver (loudspeaker) and microphones are placed closely together. As a consequence, problems...... with vibroacoustic transmission from the receiver to the microphones often occur during the use of hearing aids. This transmission causes feedback at certain critical gain levels where it produces a loud uncomfortable squealing. Consequently feedback often constitutes the limiting factor for the maximum obtainable...... gain in the hearing aid and it therefore represents a critical design problem. Feedback in hearing aids is usually divided into external and internal feedback. External feedback is caused by the leakage of sound from the ear canal whereas internal feedback is due to transmission of sound and vibrations...

  20. Benefit of Analog, Programmable and Digital Hearing Aids

    OpenAIRE

    Jamileh Fatahi; Mansoureh Adel Ghahraman; Azadeh Ebrahimi; Faranak Ehsani; Samaneh Pourhadi

    2006-01-01

    Background and Aims: As the hearing aid technology progressively promotes toward replacing analog hearing aids with digital and programmable ones, comparison of the patient satisfaction of those kinds of hearing aids by means of a valuable tool seems so necessary. So, the aim of this study was to compare self-reported benefit of analog, digitally controlled programmable and digital hearing aids for reducing disability caused by hearing impairment in mild to severe sensorineural hearing impair...

  1. Cognitive hearing aids? Insights and possibilities

    Science.gov (United States)

    Petersen, Eline Borch; Lunner, Thomas

    2015-12-01

    The working memory plays an important role in successfully overcoming adverse listening conditions and should consequently be considered when designing and testing hearing aids. A number of studies have established the relationship between hearing in noise and working memory involvement, but with the Sentence-final Word Identification and Recall (SWIRL) test, it is possible to show that working memory is also involved in listening under favorable conditions and that noise reduction has a positive influence in situation with very little noise. Although the capacity of the working memory is a finite individual size, its involvement can differ with fatigue and other factors and individualization of hearing aids should take this into account to obtain the best performance. A way of individually adapting hearing aids is based on changes in the electrical activity of the brain (EEG). Here we present the possibilities that arise from using EEG and show that ear-mounted electrodes is able to record useful EEG that can be explored for individualization of hearing aids. Such an adaptation could be done based on changes in the electrical activity of the brain (EEG). Here we present the possibilities that arise from using EEG and show that ear-mounted electrodes is able to record useful EEG that can be explored for individualization of hearing aids.

  2. Different Styles of Hearing Aids

    Science.gov (United States)

    ... aids available and offer some cosmetic and listening advantages. Photo courtesy of Phonak Click for larger image ... in place. These aids offer cosmetic and listening advantages and are used typically for adults. Photo courtesy ...

  3. Using a Shape Model in the Design of Hearing Aids

    DEFF Research Database (Denmark)

    Paulsen, Rasmus Reinhold; Nielsen, Claus; Laugesen, Søren;

    2004-01-01

    Today the design of custom completely-in-the-canal hearing aids is a manual process and therefore there is a variation in the quality of the finished hearing aids. Especially the placement of the so-called faceplate on the hearing aid strongly influences the size and shape of the hearing aid. Since...... the future hearing aid production will be less manual there is a need for algorithms that mimic the craftsmanship of skilled operators. In this paper it is described how a statistical shape model of the ear canal can be used to predict the placement of the faceplate on a hearing aid made for a given ear...

  4. 47 CFR 68.112 - Hearing aid-compatibility.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Hearing aid-compatibility. 68.112 Section 68... Hearing aid-compatibility. (a) Coin telephones. All new and existing coin-operated telephones, whether... work stations and mail rooms. Such non-common area telephones are required to be hearing aid...

  5. Acceptance of Noise Growth Patterns in Hearing Aid Users

    Science.gov (United States)

    Freyaldenhoven, Melinda C.; Plyler, Patrick N.; Thelin, James W.; Muenchen, Robert A.

    2008-01-01

    Purpose: To examine whether the effects of speech presentation level on acceptance of noise could differentiate full-time, part-time, and nonusers of hearing aids and whether these effects could predict hearing aid use. Method: Participants were separated into 3 groups on the basis of hearing aid use: (a) full-time use, (b) part-time use, or (c)…

  6. [The progress of algorithms applied in digital hearing aid].

    Science.gov (United States)

    Xiao, Xianbo; Wang, Ningyu; Hu, Guangshu

    2004-08-01

    The paper introduced the structure of digital hearing aid in brief firstly, then analyzed and compared signal processing algorithms applied in digital hearing aid, serving respectively in multi-channel frequency compensation, noise reduction and acoustic feedback cancellation. Finally, several special signal processing techniques used in digital hearing aid were introduced. PMID:15357464

  7. Satisfaction with Hearing Aids Based on Technology and Style among Hearing Impaired Persons

    Science.gov (United States)

    Faraji- Khiavi, Farzad; Dashti, Rezvan; Sameni, Seyyed-Jalal; Bayat, Arash

    2016-01-01

    Introduction: Hearing loss is one of the most disabling impairments. Using a hearing aid as an attempt to improve the hearing problem can positively affect the quality of life for these people. This research was aimed to assess satisfaction of hearing impaired patients with their hearing aids regarding the employed technology and style. Materials and Methods: This descriptive-analytic cross-sectional research was conducted on 187 subjects with hearing loss who were using a hearing aid. The subjects were over 18 years of age and were using a hearing aid for at least 6 months. The Persian version of Satisfaction with Amplification in Daily Life (SADL) questionnaire was the instrument which was used for assessing satisfaction with the hearing aid. Cronbach’s alpha was calculated to be 0.80 for instrument reliability. Results: A significant difference was observed among satisfaction subscales’ mean scores with hearing aid technology. Also a significant difference was observed between the total satisfaction score and the hearing aid model. With respect to the analysis of satisfaction with the hearing aid and its style, cost and services was the only subscale which showed a significant difference (P=0.005). Conclusion: Respondents using hearing aids with different technology and style were estimated to be quite satisfied. Training audiologists in using more appropriate and fitting hearing aids in addition to using self-reporting questionnaires like SADL for estimating patients’ social condition and participation in their life can essentially change their disability condition and countervail their hearing loss. PMID:27738608

  8. Prevalence of hearing problems, and use of hearing aids among a sample of elderly patients.

    OpenAIRE

    Liston, R.; Solomon, S.; Banerjee, A K

    1995-01-01

    BACKGROUND. Deterioration of hearing with advancing age is well documented. However, the proportion of elderly people with hearing problems who wear hearing aids is low. AIM. The aim of this study was to assess the prevalence of hearing disability in a group of elderly patients in hospital and to determine their attitudes to hearing difficulties and the wearing of hearing aids. METHOD. A random sample of patients who were convalescing were interviewed. A detailed questionnaire was administere...

  9. Prelingual deafness: Benefits from cochlear implants versus conventional hearing aids

    OpenAIRE

    Bittencourt, Aline Gomes; Torre, Ana Adelina Giantomassi Della; Bento, Ricardo Ferreira; Tsuji, Robinson Koji; Brito, Rubens de

    2012-01-01

    Summary Introduction: The majority of patients with hearing loss, including those with severe hearing loss, benefits from the use of hearing aids. The cochlear implant is believed to achieve better results in a child with hearing loss in cases where the severity of disability renders hearing aids incapable of providing adequate sound information, as they require sufficient cochlear reserve so that acoustic detention occurs. Objective: To assess if cochlear implants provide more benefit than c...

  10. Factors ensuring consistent audibility in pediatric hearing aid fitting.

    Science.gov (United States)

    Kuk, Francis; Marcoux, Andre

    2002-10-01

    Ensuring consistent audibility is an important objective when fitting hearing aids to children. This article reviews the factors that could affect the audibility of the speech signals to children. These factors range from a precise determination of the child's hearing loss to an accurate specification of gain in the chosen hearing aids. In addition, hearing aid technology and features such as multichannel processing, directional microphones, and feedback cancellation that could affect the achievement of consistent audibility are reviewed. PMID:12416935

  11. Benefit of Analog, Programmable and Digital Hearing Aids

    Directory of Open Access Journals (Sweden)

    Jamileh Fatahi

    2006-12-01

    Full Text Available Background and Aims: As the hearing aid technology progressively promotes toward replacing analog hearing aids with digital and programmable ones, comparison of the patient satisfaction of those kinds of hearing aids by means of a valuable tool seems so necessary. So, the aim of this study was to compare self-reported benefit of analog, digitally controlled programmable and digital hearing aids for reducing disability caused by hearing impairment in mild to severe sensorineural hearing impaired persons. Materials and Methods: This cross-sectional study was performed on 90 persons with mild to severe sensorineural hearing loss dividing into three groups: 43 subjects were fitted with digital, 15 with programmable, 32 with analog hearing aids. After pure tone audiometry, Abbreviated profile of hearing aid benefit (APHAB was completed before and one month after using hearing aids to determine the benefit of them. Results: Global APHAB mean scores for digital, programmable and analog hearing aids were 49.05, 33.19 and 39.53, respectively. Ease of Communication subscale mean scores were 53.46 for digitals, 37.66 for programmables and 39.09 for analogs. Background noise subscale mean scores for digital programmable and analog hearing aids were 46.36, 25.53 and 35.31, respectively. Global and also both subscale mean scores showed significant difference between digital hearing aids and programmable and analog ones. There was no significant difference between reverberation subscale mean scores of three groups. Conclusion: It seems digital hearing aids may be more beneficial to reduce disability caused by hearing loss than analog and programmable hearing aids are.

  12. The Modern Hearing Aid – an Extreme System Integration Challenge

    OpenAIRE

    Jørgensen, Ivan Harald Holger

    2013-01-01

    People with reduced hearing generally want to hide this disability and thus the size of hearing aids is constantly decreasing in the effort to make them virtually invisible. However, as for all other modern electrical devices more and more features are constantly added to hearing aids driven by the development in modern IC technology. This has resulted in the modern hearing aid being highly advanced devices where the demands for performance and features at very low supply voltage and power co...

  13. HEARING AID USE IN PATIENTS WITH PRESBYACUSIS: A QUESTIONNAIRE SURVEY

    Directory of Open Access Journals (Sweden)

    A. Karimaneh A. Eftekharian

    2004-11-01

    Full Text Available The acceptability of hearing aids in people with presbyacusis has been improved but assessment of whether there is a need for more counseling to increase the number of regular hearing-aid users seems to be important. The aim of this study was to determine if the hearing aid was worn regularly and over a long period of time in people with presbyacusis. A questionnaire survey of patients with presbyacusis who had been fitted with a monaural behind the ear hearing aid for the first time was undertaken. The patients were divided into four groups ranging from 6 months to 3 years after fitting. Overall regular long-term use of the hearing aid was found in the majority of patients with presbyacusis. The main dropout point was within the first year after fitting the hearing aid. The study furthermore revealed a relatively high demand for further help and advice with the hearing aid in all groups.

  14. Hearing aid fitting in older persons with hearing impairment: the influence of cognitive function, age, and hearing loss on hearing aid benefit

    Directory of Open Access Journals (Sweden)

    Meister H

    2015-02-01

    Full Text Available Hartmut Meister,1 Sebastian Rählmann,1 Martin Walger,2 Sabine Margolf-Hackl,3 Jürgen Kießling3 1Jean Uhrmacher Institute for Clinical ENT-Research, University of Cologne, Cologne, Germany; 2Department of Otorhinolaryngology, Head and Neck Surgery, University of Cologne, Cologne, Germany; 3Department of Othorhinolaryngology, Head and Neck Surgery, University of Giessen, Giessen, Germany Purpose: To examine the association of cognitive function, age, and hearing loss with clinically assessed hearing aid benefit in older hearing-impaired persons.Methods: Hearing aid benefit was assessed using objective measures regarding speech recognition in quiet and noisy environments as well as a subjective measure reflecting everyday situations captured using a standardized questionnaire. A broad range of general cognitive functions such as attention, memory, and intelligence were determined using different neuropsychological tests. Linear regression analyses were conducted with the outcome of the neuropsychological tests as well as age and hearing loss as independent variables and the benefit measures as dependent variables. Thirty experienced older hearing aid users with typical age-related hearing impairment participated.Results: Most of the benefit measures revealed that the participants obtained significant improvement with their hearing aids. Regression models showed a significant relationship between a fluid intelligence measure and objective hearing aid benefit. When individual hearing thresholds were considered as an additional independent variable, hearing loss was the only significant contributor to the benefit models. Lower cognitive capacity – as determined by the fluid intelligence measure – was significantly associated with greater hearing loss. Subjective benefit could not be predicted by any of the variables considered.Conclusion: The present study does not give evidence that hearing aid benefit is critically associated with cognitive

  15. Music and hearing aids--an introduction.

    Science.gov (United States)

    Chasin, Marshall

    2012-09-01

    Modern digital hearing aids have provided improved fidelity over those of earlier decades for speech. The same however cannot be said for music. Most modern hearing aids have a limitation of their "front end," which comprises the analog-to-digital (A/D) converter. For a number of reasons, the spectral nature of music as an input to a hearing aid is beyond the optimal operating conditions of the "front end" components. Amplified music tends to be of rather poor fidelity. Once the music signal is distorted, no amount of software manipulation that occurs later in the circuitry can improve things. The solution is not a software issue. Some characteristics of music that make it difficult to be transduced without significant distortion include an increased sound level relative to that of speech, and the crest factor- the difference in dB between the instantaneous peak of a signal and its RMS value. Clinical strategies and technical innovations have helped to improve the fidelity of amplified music and these include a reduction of the level of the input that is presented to the A/D converter. PMID:23258616

  16. 47 CFR 68.4 - Hearing aid-compatible telephones.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Hearing aid-compatible telephones. 68.4 Section... (CONTINUED) CONNECTION OF TERMINAL EQUIPMENT TO THE TELEPHONE NETWORK General § 68.4 Hearing aid-compatible... for export) or imported for use in the United States after August 16, 1989, must be hearing...

  17. 21 CFR 874.3310 - Hearing aid calibrator and analysis system.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Hearing aid calibrator and analysis system. 874... aid calibrator and analysis system. (a) Identification. A hearing aid calibrator and analysis system... sound intensity characteristics emanating from a hearing aid, master hearing aid, group hearing aid...

  18. Hearing Aids: A Review for the Family Physician

    OpenAIRE

    Gaudry, Florent

    1987-01-01

    Hearing impairment is a common disability which can often be minimized by the use of hearing aids. Various types of hearing aids have been developed which are appropriate for most hearing losses that are not medically or surgically treatable, and these devices have been variously applied. Potential benefits and limitations of amplification need to be considered for each patient. Changes in technology, assistive devices, and the development of the cochlear implant have improved the ability of ...

  19. Hearing loss and cognition: the role of hearing AIDS, social isolation and depression.

    Directory of Open Access Journals (Sweden)

    Piers Dawes

    Full Text Available Hearing loss is associated with poor cognitive performance and incident dementia and may contribute to cognitive decline. Treating hearing loss with hearing aids may ameliorate cognitive decline. The purpose of this study was to test whether use of hearing aids was associated with better cognitive performance, and if this relationship was mediated via social isolation and/or depression. Structural equation modelling of associations between hearing loss, cognitive performance, social isolation, depression and hearing aid use was carried out with a subsample of the UK Biobank data set (n = 164,770 of UK adults aged 40 to 69 years who completed a hearing test. Age, sex, general health and socioeconomic status were controlled for as potential confounders. Hearing aid use was associated with better cognition, independently of social isolation and depression. This finding was consistent with the hypothesis that hearing aids may improve cognitive performance, although if hearing aids do have a positive effect on cognition it is not likely to be via reduction of the adverse effects of hearing loss on social isolation or depression. We suggest that any positive effects of hearing aid use on cognition may be via improvement in audibility or associated increases in self-efficacy. Alternatively, positive associations between hearing aid use and cognition may be accounted for by more cognitively able people seeking and using hearing aids. Further research is required to determine the direction of association, if there is any direct causal relationship between hearing aid use and better cognition, and whether hearing aid use results in reduction in rates of cognitive decline measured longitudinally.

  20. Hearing Screening in the Elderly and Evaluating the Need for Hearing Aid

    Directory of Open Access Journals (Sweden)

    Leyla Jalilvand Karimi

    2008-12-01

    Full Text Available Background and Aim: Hearing loss is one of the most prevalent chronic conditions affecting the elderly. The impacts of hearing loss are depression, social isolation, and functional disability, particularly for those who have not yet been evaluated or treated for hearing loss. The aim of this study was audiologic screening and assessing candidacy for hearing aid in the elderly people.Materials and Methods: This analytic-cross sectional study was performed on 52 older adults aged from 51 to 97. Subjects were evaluated according to ASHA guidelines for audiologic screening in adults (1997. Using HHIE-S as hearing disability screening instrument, the need for hearing aid use was evaluated.Results: About 86 percent of subjects had some degree of hearing loss. There were significant correlation between PTA(0.5, 1, 2 KHz>26 and HHIE-S>10. According to these two factors 21.2 percent of subjects needed to use hearing aid while 18 percent of this group had hearing aids.Conclusion: There is high prevalence of hearing loss among older adults, thus it's necessary to evaluate the need for hearing aid in this rapidly growing population. Among different factors affecting hearing aid candidacy the most correlated were PTA(0.5, 1, 2KHz>26 and HHIE-S>10. Therefore according to this study by combination of these two evaluation of hearing aid candidacy would be more appropriate.

  1. Effectiveness of a teleaudiology approach to hearing aid fitting.

    Science.gov (United States)

    Blamey, Peter J; Blamey, Jeremy K; Saunders, Elaine

    2015-12-01

    This research was conducted to evaluate the efficacy of an online speech perception test (SPT) for the measurement of hearing and hearing aid fitting in comparison with conventional methods. Phase 1 was performed with 88 people to evaluate the SPT for the detection of significant hearing loss. The SPT had high sensitivity (94%) and high selectivity (98%). In Phase 2, phonetic stimulus-response matrices derived from the SPT results for 408 people were used to calculate "Infograms™." At every frequency, there was a highly significant correlation (p hearing thresholds derived from the Infogram and conventional audiograms. In Phase 3, initial hearing aid fittings were derived from conventional audiograms and Infograms for two groups of hearing impaired people. Unaided and aided SPTs were used to measure the perceptual benefit of the aids for the two groups. The mean increases between unaided and aided SPT scores were 19.6%, and 22.2% (n = 517, 484; t = 2.2; p hearing aids fitted using conventional audiograms and Infograms respectively. The research provided evidence that the SPT is a highly effective tool for the detection and measurement of hearing loss and hearing aid fitting. Use of the SPT reduces the costs and increases the effectiveness of hearing aid fitting, thereby enabling a sustainable teleaudiology business model.

  2. Hearing aids' electromagnetic immunity to environmental RF fields

    International Nuclear Information System (INIS)

    In this work, the electromagnetic interference on hearing aids was evaluated. Electromagnetic (EM) immunity tests on different types of hearing aids were carried out, using signals of intensity and modulation comparable to those present in the environment. The purpose of this work is to characterise the interference, establishing the immunity threshold for different frequencies and finding out which types of hearing aids are more susceptible, and in which frequency range. The tests were carried out in a GTEM cell on seven hearing aids, using AM and GSM signals in the radiofrequency (RF) range. (authors)

  3. Auditory profiling and hearing-aid satisfaction in hearing-aid candidates

    DEFF Research Database (Denmark)

    Santurette, Sébastien; Thorup, Nicoline; Jørgensen, Søren;

    2016-01-01

    Hearing-impaired (HI) listeners often complain about difficulties communicating in the presence of background noise, although audibility may be restored by a hearing-aid (HA). The audiogram typically forms the basis for HA fitting, i.e. people with similar audiograms are given the same prescription...... by default. This study aimed at identifying clinically relevant tests that may serve as an informative addition to the audiogram and which may relate more directly to HA satisfaction than the audiogram does. METHODS: A total of 29 HI and 26 normal-hearing listeners performed tests of spectral and temporal...... resolution, binaural hearing, speech intelligibility in stationary and fluctuating noise and a working-memory test. Six weeks after HA fitting, the HI listeners answered a questionnaire evaluating HA treatment. RESULTS: No other measures than masking release between fluctuating and stationary noise...

  4. The Modern Hearing Aid – an Extreme System Integration Challenge

    DEFF Research Database (Denmark)

    Jørgensen, Ivan Harald Holger

    People with reduced hearing generally want to hide this disability and thus the size of hearing aids is constantly decreasing in the effort to make them virtually invisible. However, as for all other modern electrical devices more and more features are constantly added to hearing aids driven...... by the development in modern IC technology. This has resulted in the modern hearing aid being highly advanced devices where the demands for performance and features at very low supply voltage and power consumption constantly prove a huge challenge to the physical design of hearing aids and not at least the design...... of the ICs for these. This leads to very large demands for system integration at the packing level, SiP (System-in-Package), and not at least at the IC level, SoC (System-on-Chip). As a result of this all large hearing aid manufactures use custom package technology which again uses fully customized ASICs...

  5. Is Cognitive Function in Adults with Hearing Impairment Improved by the Use of Hearing Aids?

    OpenAIRE

    Choi, A Young; Shim, Hyun Joon; Lee, Sung Hee; Yoon, Sang Won; Joo, Eun-Jeong

    2011-01-01

    Objectives In the present study, we investigated whether speech-related cognitive function and speech recognition ability under background noise in adults with hearing impairment are improved with the use of hearing aids. Methods Participants were recruited from the ENT Department of Eulji Hospital from September 2008 to July 2009. The study group comprised 18 participants (mean age, 69.5±8.3 years) with sensorineural hearing loss who were fitted with hearing aids, and the control group compr...

  6. Hearing aid effectiveness after aural rehabilitation - individual versus group (HEARING) trial: RCT design and baseline characteristics

    OpenAIRE

    Heagerty Patrick J; Liu Chuan-Fen; Souza Pamela E; Collins Margaret P; Amtmann Dagmar; Yueh Bevan

    2009-01-01

    Abstract Background Hearing impairment is the most common body system disability in veterans. In 2008, nearly 520,000 veterans had a disability for hearing loss through the Department of Veterans Affairs (VA). Changes in eligibility for hearing aid services, along with the aging population, contributed to a greater than 300% increase in the number of hearing aids dispensed from 1996 to 2006. In 2006, the VA committed to having no wait times for patient visits while providing quality clinicall...

  7. Measurement of hearing aid internal noise.

    Science.gov (United States)

    Lewis, James D; Goodman, Shawn S; Bentler, Ruth A

    2010-04-01

    Hearing aid equivalent input noise (EIN) measures assume the primary source of internal noise to be located prior to amplification and to be constant regardless of input level. EIN will underestimate internal noise in the case that noise is generated following amplification. The present study investigated the internal noise levels of six hearing aids (HAs). Concurrent with HA processing of a speech-like stimulus with both adaptive features (acoustic feedback cancellation, digital noise reduction, microphone directionality) enabled and disabled, internal noise was quantified for various stimulus levels as the variance across repeated trials. Changes in noise level as a function of stimulus level demonstrated that (1) generation of internal noise is not isolated to the microphone, (2) noise may be dependent on input level, and (3) certain adaptive features may contribute to internal noise. Quantifying internal noise as the variance of the output measures allows for noise to be measured under real-world processing conditions, accounts for all sources of noise, and is predictive of internal noise audibility. PMID:20370034

  8. Measurement of hearing aid internal noise1

    Science.gov (United States)

    Lewis, James D.; Goodman, Shawn S.; Bentler, Ruth A.

    2010-01-01

    Hearing aid equivalent input noise (EIN) measures assume the primary source of internal noise to be located prior to amplification and to be constant regardless of input level. EIN will underestimate internal noise in the case that noise is generated following amplification. The present study investigated the internal noise levels of six hearing aids (HAs). Concurrent with HA processing of a speech-like stimulus with both adaptive features (acoustic feedback cancellation, digital noise reduction, microphone directionality) enabled and disabled, internal noise was quantified for various stimulus levels as the variance across repeated trials. Changes in noise level as a function of stimulus level demonstrated that (1) generation of internal noise is not isolated to the microphone, (2) noise may be dependent on input level, and (3) certain adaptive features may contribute to internal noise. Quantifying internal noise as the variance of the output measures allows for noise to be measured under real-world processing conditions, accounts for all sources of noise, and is predictive of internal noise audibility. PMID:20370034

  9. Elderly With Different Types of Hearing Loss and Comorbidities: Satisfaction With Hearing Aids

    Directory of Open Access Journals (Sweden)

    Dashti

    2015-07-01

    Full Text Available Background Hearing loss is developing when age is rising. Initiation and progression rates of hearing loss vary among different individuals and groups. Objectives The current study aimed to determine satisfaction of the elderly with their hearing aids in different types of hearing loss and comorbidities. Patients and Methods The study was conducted on 40 elderly subjects suffering from hearing loss and using hearing aids. The data collection method included assessment of hearing loss in addition to using a questionnaire to estimate respondents' satisfaction with their hearing aids in daily life. The Persian version of the Satisfaction with Amplification in Daily Life (SADL questionnaire was administered. The data were analyzed using descriptive and inferential statistics by SPSS software version19. Results The mean satisfaction scores of the elderly were 4.83 ± 0.51 and 5.36 ± 0.30 in the sensorineural loss groups. There was no significant difference between different comorbidities. There was a significant difference between satisfaction level of cost and services subscales in the symmetrical styles of hearing loss (P value = 0.04. Conclusions The findings of the study indicated a high satisfaction of the elderly with their hearing aids, considering the type of hearing loss. Despite all the efforts to improve the audiologic services during verification process, the elderly should be consulted specifically in order to fit their hearing aid as well as their expectations from aid.

  10. Perceptual evaluation of noise reduction in hearing aids

    NARCIS (Netherlands)

    I. Brons

    2013-01-01

    Difficulty to understand speech in noisy situations is the number-one complaint of hearing aid users. Hearing aid manufacturers take measures against the problem of speech in noise by implementing signal-processing algorithms that should reduce background noise. The most widely applied measure again

  11. Hearing aid measurements with speech and noise signals

    DEFF Research Database (Denmark)

    Dyrlund, Ole; Ludvigsen, Carl; Olofsson, Åke;

    1994-01-01

    An increasing number of hearing aid types include one or more features which are intentionally non-linear. In such devices measurement of frequency response and distortion using sweep tone measurements are typically of little relevance. Five different non-linear hearing aid types were used...

  12. 47 CFR 68.414 - Hearing aid-compatibility: Enforcement.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Hearing aid-compatibility: Enforcement. 68.414... (CONTINUED) CONNECTION OF TERMINAL EQUIPMENT TO THE TELEPHONE NETWORK Complaint Procedures § 68.414 Hearing aid-compatibility: Enforcement. Enforcement of §§ 68.4 and 68.112 is hereby delegated to those...

  13. Candidacy for Bilateral Hearing Aids: A Retrospective Multicenter Study

    NARCIS (Netherlands)

    M. Boymans; S.T. Goverts; S.E. Kramer; J.M. Festen; W.A. Dreschler

    2009-01-01

    Purpose: The goal of this study was to find factors for refining candidacy criteria for bilateral hearing aid fittings. Clinical files of 1,000 consecutive hearing aid fittings were analyzed. Method: Case history, audiometric, and rehabilitation data were collected from clinical files, and an extens

  14. Concerns regarding Direct-to-Consumer Hearing Aid Purchasing

    Science.gov (United States)

    Kimball, Suzanne H.

    2010-01-01

    An individual over age 18 can purchase a hearing aid online or through mail order if they sign a waiver declining a medical evaluation, while those under 18 are required to be seen by a physician to obtain medical consent. However, in many states there is nothing to prevent a parent or caregiver from purchasing hearing aids for their child from a…

  15. Effectiveness of a teleaudiology approach to hearing aid fitting.

    Science.gov (United States)

    Blamey, Peter J; Blamey, Jeremy K; Saunders, Elaine

    2015-12-01

    This research was conducted to evaluate the efficacy of an online speech perception test (SPT) for the measurement of hearing and hearing aid fitting in comparison with conventional methods. Phase 1 was performed with 88 people to evaluate the SPT for the detection of significant hearing loss. The SPT had high sensitivity (94%) and high selectivity (98%). In Phase 2, phonetic stimulus-response matrices derived from the SPT results for 408 people were used to calculate "Infograms™." At every frequency, there was a highly significant correlation (p Phase 3, initial hearing aid fittings were derived from conventional audiograms and Infograms for two groups of hearing impaired people. Unaided and aided SPTs were used to measure the perceptual benefit of the aids for the two groups. The mean increases between unaided and aided SPT scores were 19.6%, and 22.2% (n = 517, 484; t = 2.2; p business model. PMID:26556060

  16. Cortical Auditory Evoked Potentials in (Un)aided Normal-Hearing and Hearing-Impaired Adults.

    Science.gov (United States)

    Van Dun, Bram; Kania, Anna; Dillon, Harvey

    2016-02-01

    Cortical auditory evoked potentials (CAEPs) are influenced by the characteristics of the stimulus, including level and hearing aid gain. Previous studies have measured CAEPs aided and unaided in individuals with normal hearing. There is a significant difference between providing amplification to a person with normal hearing and a person with hearing loss. This study investigated this difference and the effects of stimulus signal-to-noise ratio (SNR) and audibility on the CAEP amplitude in a population with hearing loss. Twelve normal-hearing participants and 12 participants with a hearing loss participated in this study. Three speech sounds-/m/, /g/, and /t/-were presented in the free field. Unaided stimuli were presented at 55, 65, and 75 dB sound pressure level (SPL) and aided stimuli at 55 dB SPL with three different gains in steps of 10 dB. CAEPs were recorded and their amplitudes analyzed. Stimulus SNRs and audibility were determined. No significant effect of stimulus level or hearing aid gain was found in normal hearers. Conversely, a significant effect was found in hearing-impaired individuals. Audibility of the signal, which in some cases is determined by the signal level relative to threshold and in other cases by the SNR, is the dominant factor explaining changes in CAEP amplitude. CAEPs can potentially be used to assess the effects of hearing aid gain in hearing-impaired users. PMID:27587919

  17. Horizontal localization with bilateral hearing aids: without is better than with

    OpenAIRE

    Van den Bogaert, Tim; Klasen, Thomas; Moonen, Marc; Van Deun, Lieselot; Wouters, Jan

    2006-01-01

    This paper studies the effect of bilateral hearing aids on directional hearing in the frontal horizontal plane. Localization tests evaluated bilateral hearing aid users using different stimuli and different noise scenarios. Normal hearing subjects were used as a reference. The main research questions raised in this paper are: (i) How do bilateral hearing aid users perform on a localization task, relative to normal hearing subjects? (ii) Do bilateral hearing aids preserve localization cues, an...

  18. Formal auditory training in adult hearing aid users

    Directory of Open Access Journals (Sweden)

    Daniela Gil

    2010-01-01

    Full Text Available INTRODUCTION: Individuals with sensorineural hearing loss are often able to regain some lost auditory function with the help of hearing aids. However, hearing aids are not able to overcome auditory distortions such as impaired frequency resolution and speech understanding in noisy environments. The coexistence of peripheral hearing loss and a central auditory deficit may contribute to patient dissatisfaction with amplification, even when audiological tests indicate nearly normal hearing thresholds. OBJECTIVE: This study was designed to validate the effects of a formal auditory training program in adult hearing aid users with mild to moderate sensorineural hearing loss. METHODS: Fourteen bilateral hearing aid users were divided into two groups: seven who received auditory training and seven who did not. The training program was designed to improve auditory closure, figure-to-ground for verbal and nonverbal sounds and temporal processing (frequency and duration of sounds. Pre- and post-training evaluations included measuring electrophysiological and behavioral auditory processing and administration of the Abbreviated Profile of Hearing Aid Benefit (APHAB self-report scale. RESULTS: The post-training evaluation of the experimental group demonstrated a statistically significant reduction in P3 latency, improved performance in some of the behavioral auditory processing tests and higher hearing aid benefit in noisy situations (p-value < 0,05. No changes were noted for the control group (p-value <0,05. CONCLUSION: The results demonstrated that auditory training in adult hearing aid users can lead to a reduction in P3 latency, improvements in sound localization, memory for nonverbal sounds in sequence, auditory closure, figure-to-ground for verbal sounds and greater benefits in reverberant and noisy environments.

  19. Hearing aid effectiveness after aural rehabilitation - individual versus group (HEARING trial: RCT design and baseline characteristics

    Directory of Open Access Journals (Sweden)

    Heagerty Patrick J

    2009-12-01

    Full Text Available Abstract Background Hearing impairment is the most common body system disability in veterans. In 2008, nearly 520,000 veterans had a disability for hearing loss through the Department of Veterans Affairs (VA. Changes in eligibility for hearing aid services, along with the aging population, contributed to a greater than 300% increase in the number of hearing aids dispensed from 1996 to 2006. In 2006, the VA committed to having no wait times for patient visits while providing quality clinically-appropriate care. One approach to achieving this goal is the use of group visits as an alternative to individual visits. We sought to determine: 1 if group hearing aid fitting and follow-up visits were at least as effective as individual visits, and 2 whether group visits lead to cost savings through the six month period after the hearing aid fitting. We describe the rationale, design, and characteristics of the baseline cohort of the first randomized clinical trial to study the impact of group versus individual hearing aid fitting and follow-up visits. Methods Participants were recruited from the VA Puget Sound Health Care System Audiology Clinic. Eligible patients had no previous hearing aid use and monaural or binaural air-conduction hearing aids were ordered at the evaluation visit. Participants were randomized to receive the hearing aid fitting and the hearing aid follow-up in an individual or group visit. The primary outcomes were hearing-related function, measured with the first module of the Effectiveness of Aural Rehabilitation (Inner EAR, and hearing aid adherence. We tracked the total cost of planned and unplanned audiology visits over the 6-month interval after the hearing aid fitting. Discussion A cohort of 659 participants was randomized to receive group or individual hearing aid fitting and follow-up visits. Baseline demographic and self-reported health status and hearing-related measures were evenly distributed across the treatment arms

  20. Pragmatic Abilities of Children with Hearing Loss Using Cochlear Implants or Hearing Aids Compared to Hearing Children

    Science.gov (United States)

    Most, Tova; Shina-August, Ella; Meilijson, Sara

    2010-01-01

    This study characterized the profile of pragmatic abilities among 24 children with hearing loss (HL) aged 6.3-9.4 years, 13 using hearing aids (HAs) and 11 using cochlear implants (CIs), in comparison to those of 13 hearing children with similar chronological and language ages. All the children with HL used spoken language, attended regular…

  1. Hearing Screening in the Elderly and Evaluating the Need for Hearing Aid

    OpenAIRE

    Leyla Jalilvand Karimi; Majid Ashrafi; Elham Khosravi; Zahra Shahidipour; Fatemeh Vafaee

    2008-01-01

    Background and Aim: Hearing loss is one of the most prevalent chronic conditions affecting the elderly. The impacts of hearing loss are depression, social isolation, and functional disability, particularly for those who have not yet been evaluated or treated for hearing loss. The aim of this study was audiologic screening and assessing candidacy for hearing aid in the elderly people.Materials and Methods: This analytic-cross sectional study was performed on 52 older adults aged from 51 to 97...

  2. Acceptability of binaural hearing aids: a cross-over study.

    OpenAIRE

    Stephens, S D; Callaghan, D E; Hogan, S.; Meredith, R.; Rayment, A; Davis, A

    1991-01-01

    Using screening questionnaires we were able to detect individuals aged 50-65 years with hearing disability in a general practice population. Those who had better ear hearing levels of 30 dB or worse were invited to take place in a cross-over study comparing the acceptability of a monaural or binaural hearing-aid fitting. Fifty-five per cent ultimately opted for a binaural fitting and had greater hearing disability and worse mean hearing levels than those who opted for a monaural fitting. They...

  3. 21 CFR 801.421 - Hearing aid devices; conditions for sale.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Hearing aid devices; conditions for sale. 801.421... (CONTINUED) MEDICAL DEVICES LABELING Special Requirements for Specific Devices § 801.421 Hearing aid devices...) of this section, a hearing aid dispenser shall not sell a hearing aid unless the prospective user...

  4. 21 CFR 874.3950 - Transcutaneous air conduction hearing aid system.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Transcutaneous air conduction hearing aid system... Transcutaneous air conduction hearing aid system. (a) Identification. A transcutaneous air conduction hearing aid... occluding the ear canal. The device consists of an air conduction hearing aid attached to a...

  5. Aspects of Hearing Aid Fitting Procedures

    OpenAIRE

    Metselaar, Mick

    2010-01-01

    textabstractSensorineural hearing loss is a common and chronic disorder that affects almost ten percent of the world population. In the Netherlands, it is also the major disorder in the working population [NCvB, 2008]. Hearing loss leads to restriction in the interaction with others and withdrawal from participation in (social) activities. Due to the size of the problem and the vast impact on the function, hearing rehabilitation is an important issue. Although hearing rehabilitation focuses o...

  6. Effect of microphone location in ITE versus BTE hearing aids.

    Science.gov (United States)

    Gartrell, E L; Church, G T

    1990-07-01

    Sound pressure measurements were made at the hearing aid microphones of 20 subjects with their in-the-ear (ITE) hearing aids and a behind-the-ear (BTE) hearing aid to determine the influence of microphone location on hearing aid input. A probe tube microphone was used to measure the difference in dB SPL between the ITE and BTE microphone locations. ITE microphone location resulted in a maximum high frequency advantage of 9.2 dB in the 2500 to 5000 Hz range. However, the frequency location of this maximal advantage varied a great deal between individuals, precluding the use of a standard ITE microphone correction factor for 2cc coupler to functional gain conversions.

  7. Beamforming under Quantization Errors in Wireless Binaural Hearing Aids

    Directory of Open Access Journals (Sweden)

    Kees Janse

    2008-09-01

    Full Text Available Improving the intelligibility of speech in different environments is one of the main objectives of hearing aid signal processing algorithms. Hearing aids typically employ beamforming techniques using multiple microphones for this task. In this paper, we discuss a binaural beamforming scheme that uses signals from the hearing aids worn on both the left and right ears. Specifically, we analyze the effect of a low bit rate wireless communication link between the left and right hearing aids on the performance of the beamformer. The scheme is comprised of a generalized sidelobe canceller (GSC that has two inputs: observations from one ear, and quantized observations from the other ear, and whose output is an estimate of the desired signal. We analyze the performance of this scheme in the presence of a localized interferer as a function of the communication bit rate using the resultant mean-squared error as the signal distortion measure.

  8. Beamforming under Quantization Errors in Wireless Binaural Hearing Aids

    Directory of Open Access Journals (Sweden)

    Srinivasan Sriram

    2008-01-01

    Full Text Available Improving the intelligibility of speech in different environments is one of the main objectives of hearing aid signal processing algorithms. Hearing aids typically employ beamforming techniques using multiple microphones for this task. In this paper, we discuss a binaural beamforming scheme that uses signals from the hearing aids worn on both the left and right ears. Specifically, we analyze the effect of a low bit rate wireless communication link between the left and right hearing aids on the performance of the beamformer. The scheme is comprised of a generalized sidelobe canceller (GSC that has two inputs: observations from one ear, and quantized observations from the other ear, and whose output is an estimate of the desired signal. We analyze the performance of this scheme in the presence of a localized interferer as a function of the communication bit rate using the resultant mean-squared error as the signal distortion measure.

  9. Prelingual deafness: Benefits from cochlear implants versus conventional hearing aids

    Directory of Open Access Journals (Sweden)

    Bittencourt, Aline Gomes

    2012-01-01

    Full Text Available Introduction: The majority of patients with hearing loss, including those with severe hearing loss, benefits from the use of hearing aids. The cochlear implant is believed to achieve better results in a child with hearing loss in cases where the severity of disability renders hearing aids incapable of providing adequate sound information, as they require sufficient cochlear reserve so that acoustic detention occurs. Objective: To assess if cochlear implants provide more benefit than conventional hearing aids in prelingually deaf patients. Summary of the findings: The study was a systematic review of scientific papers selected by a search of the SciELO, Cochrane, MEDLINE, and LILACS-BIREME databases. Among the 2169 articles found, 12 studies proved relevant to the issue and presented an evidence strength rating of B. No publications rated evidence strength A. Seven of the studies analyzed were prospective cohorts and 5 were cross-sectional studies. Conclusion: Based on several studies, cochlear implants were demonstrated to be the best current alternative for bilateral severe or profound hearing loss, achieving better results in speech perception and development in prelingual children when compared to conventional hearing aids.

  10. Hearing aid-related satisfaction based on type and degree of hearing loss in elderly

    Directory of Open Access Journals (Sweden)

    Farzad FarajiKhiavi

    2015-02-01

    Full Text Available Background and Aim: Hearing loss is one of the most prevalent chronic diseases in the elderly; using a hearing aid to alleviate auditory impairment can positively affect their quality of life. This research aimed to determine the level of satisfaction concerning hearing aids in elderly people with hearing impairment based on the type and degree of hearing loss.Methods: An analytic cross-sectional research design was used ; the sample included 40 elderly people who used hearing aids. According to the World Health Organization (WHO age classification, participants were divided into two age groups: 65-74 years (n=20 and 75-90 years (n=20. Satisfaction levels were assessed using a standard satisfaction with amplification in daily life (SADL questionnaire.Results: Satisfaction levels in the 65-74 age group were significantly higher than that in the 75-90 age group (p=0.02. Participants with mixed hearing loss revealed higher satisfaction levels than participants with sensorineural hearing loss (p=0.02. On the negative effects dimension, participants with severe hearing loss exhibited significantly higher satisfaction levels than participants with moderate or moderate to severe hearing loss (p=0.01.Conclusion: Total satisfaction mean scores were relatively high in the elderly participants . Negative features could be reduced via careful consultation regarding the aids’ amplifying capabilities and limitations in groups with moderate or moderate to severe hearing loss.

  11. [Evaluation of hearing aid rehabilitation using the Freiburg Monosyllabic Test].

    Science.gov (United States)

    Hoppe, U

    2016-08-01

    The benefit of hearing aids is not always directly subjectively perceivable. Therefore, objective and quantifiable speech audiometric measurements are required. Beside acoustic gain measurements and structured interviews, speech audiometry in quiet and in noise is one of the three pillars of hearing aid evaluation.The Freiburg monosyllabic test has been used for decades for hearing aid prescription and evaluation in German speaking countries. Relative and absolute targets can be individually defined for the rehabilitation of speech perception by hearing aids as assessed by the Freiburg monosyllabic test in quiet and at conversational levels.The general applicability of speech audiometric measurements in noise is limited. Alternative ("modern") methods and the definitions of noise situations relevant to everyday life have been discussed for years. However, the introduction of these methods into everyday use has proven difficult. On one hand, there is comparatively little practical experience; on the other, it has not yet been demonstrated what additional benefits these more complicated measurements might have for standard hearing aid evaluations and hearing aid users.

  12. [Clinical comparison of a digital with an analog hearing aid].

    Science.gov (United States)

    Meister, H; Klüser, H; Wolf, A; Walger, M; von Wedel, H

    2000-04-01

    The benefit of innovative hearing aid technology can be evaluated in clinical trials. The present study describes the comparison of a new digital hearing aid with an analogue device serving as a reference. The tests were carried out with 15 experienced hearing aid wearers. To prevent the influence of different fitting algorithms such as prescriptive or loudness-based the digital devices were not renewed fitted but their level- and frequency-depending gain was adjusted to that of the reference. Different tests concerning loudness perception (category loudness scaling) speech discrimination in noise (the Göttingen sentence test) and self-assessment of the benefit by questionnaires were performed. All tests yielded slightly better results for the digital hearing aid. The speech audiometric evaluation showed somewhat better discrimination for the test-device. The questionnaires yielded a marked preference for the digital device. Because the study was not blinded influences due to the knowledge of the subjects of testing a new technology generally can occur. On the other hand, the question arises whether present audiometric tests sufficiently consider signal processing of modern hearing systems. Furthermore, one has to take into account that only a few of the features of digital technology such as noise-reduction and feedback-cancellation were considered in this study to allow for a sensible comparison. Because of the large number of possibilities offered by digital technology additional benefit by the hearing aid can be expected. PMID:10810675

  13. Self-reported disability and handicap after hearing-aid fitting and benefit of hearing aids: comparison of fitting procedures, degree of hearing loss, experience with hearing aids and uni- and bilateral fittings

    OpenAIRE

    Metselaar, M.; Maat, B; Krijnen, P.; Verschuure, H.; Dreschler, W.A.; Feenstra, L.

    2009-01-01

    Self-reported outcome on hearing disability and handicap as well as overall health-related quality of life were measured after hearing-aid fitting in a large-scale clinical population. Fitting was performed according to two different procedures in a double-blind study design. We used a comparative procedure based on optimizing speech intelligibility scores and a strictly implemented fitting formula. Hearing disability and handicap were assessed with the hearing handicap and disability invento...

  14. Extrusion of bone anchor suture following flexor digitorum profundus tendon avulsion injury repair.

    LENUS (Irish Health Repository)

    Tiong, William H C

    2011-09-01

    Flexor digitorum profundus (FDP) zone I tendon avulsion injury is traditionally repaired with a pullout suture technique. More recently, bone anchor sutures have been used as a viable alternative and have largely replaced areas in hand surgery where pullout suture technique was once required. To date, there have been very few complications reported related to bone anchor suture use in FDP tendon reattachment to the bone. We report a very unusual case of extrusion of bone anchor through the nailbed, 6 years after zone I FDP tendon avulsion injury repair and a brief review of literature.

  15. Aspects of Hearing Aid Fitting Procedures

    NARCIS (Netherlands)

    R.M. Metselaar (Mick)

    2010-01-01

    textabstractSensorineural hearing loss is a common and chronic disorder that affects almost ten percent of the world population. In the Netherlands, it is also the major disorder in the working population [NCvB, 2008]. Hearing loss leads to restriction in the interaction with others and withdrawal f

  16. Predictors of Hearing Aid Use Time in Children with Mild-to-Severe Hearing Loss

    Science.gov (United States)

    Walker, Elizabeth A.; Spratford, Meredith; Moeller, Mary Pat; Oleson, Jacob; Ou, Hua; Roush, Patricia; Jacobs, Shana

    2013-01-01

    Purpose: This study investigated predictors of hearing aid (HA) use time for children with mild-to-severe hearing loss (HL). Barriers to consistent HA use and reliability of parent report measures were also examined. Method: Participants included parents of 272 children with HL. Parents estimated the amount of time the child used HAs daily.…

  17. Case Factors Affecting Hearing Aid Recommendations by Hearing Care Professionals

    DEFF Research Database (Denmark)

    Gioia, Carmine; Ben-Akiva, Moshe; Jørgensen, Ole;

    2015-01-01

    Background: Professional recommendations to patients concerning hearing instrument (HI) technology levels are not currently evidence-based. Pre-fitting parameters have not been proven to be the primary indicators for optimal patient outcome with different HI technology levels. This results...... in subjective decision-making as regards the technology level recommendation made by professionals. Purpose: The objective of this study is to gain insight into the decision-making criteria utilized by professionals when recommending HI technology levels to hearing-impaired patients....

  18. New feedback detection method for performance evaluation of hearing aids

    Science.gov (United States)

    Shin, Mincheol; Wang, Semyung; Bentler, Ruth A.; He, Shuman

    2007-04-01

    New objective and accurate feedback detection method, transfer function variation criterion (TVC), has been developed for evaluating the performance of feedback cancellation techniques. The proposed method is able to classify stable, unstable, and sub-oscillatory stages of feedback in hearing aids. The sub-oscillatory stage is defined as a state where the hearing aid user may perceive distortion of sound quality without the occurrence of oscillation. This detection algorithm focuses on the transfer function variation of hearing aids and the relationship between system stability and feedback oscillation. The transfer functions are obtained using the FIR Wiener filtering algorithm off-line. An anechoic test box is used for the exact and reliable evaluation of different hearing aids. The results are listed and compared with the conventional power concentration ratio (PCR), which has been generally adopted as a feedback detection method for the performance evaluation of hearing aids. The possibility of real-time implementation is discussed in terms of a more convenient and exact performance evaluation of feedback cancellation techniques.

  19. The influence of hearing aids on the speech and language development of children with hearing loss.

    Science.gov (United States)

    Tomblin, J Bruce; Oleson, Jacob J; Ambrose, Sophie E; Walker, Elizabeth; Moeller, Mary Pat

    2014-05-01

    IMPORTANCE Hearing loss (HL) in children can be deleterious to their speech and language development. The standard of practice has been early provision of hearing aids (HAs) to moderate these effects; however, there have been few empirical studies evaluating the effectiveness of this practice on speech and language development among children with mild-to-severe HL. OBJECTIVE To investigate the contributions of aided hearing and duration of HA use to speech and language outcomes in children with mild-to-severe HL. DESIGN, SETTING, AND PARTICIPANTS An observational cross-sectional design was used to examine the association of aided hearing levels and length of HA use with levels of speech and language outcomes. One hundred eighty 3- and 5-year-old children with HL were recruited through records of Universal Newborn Hearing Screening and referrals from clinical service providers in the general community in 6 US states. INTERVENTIONS All but 4 children had been fitted with HAs, and measures of aided hearing and the duration of HA use were obtained. MAIN OUTCOMES AND MEASURES Standardized measures of speech and language ability were obtained. RESULTS Measures of the gain in hearing ability for speech provided by the HA were significantly correlated with levels of speech (ρ179 = 0.20; P = .008) and language: ρ155 = 0.21; P = .01) ability. These correlations were indicative of modest levels of association between aided hearing and speech and language outcomes. These benefits were found for children with mild and moderate-to-severe HL. In addition, the amount of benefit from aided hearing interacted with the duration of HA experience (Speech: F4,161 = 4.98; P hearing. CONCLUSIONS AND RELEVANCE The degree of improved hearing provided by HAs was associated with better speech and language development in children. In addition, the duration of HA experience interacted with the aided hearing to influence outcomes. These results provide support for the

  20. Factors affecting the use and perceived benefit of ITE and BTE hearing aids.

    Science.gov (United States)

    Baumfield, A; Dillon, H

    2001-08-01

    The aim of the present study was to investigate factors that might affect hearing aid use, satisfaction and perceived benefit. A further aim was to look at which variables affect the choice of hearing aid, in particular, an in-the-ear (ITE) versus a behind-the-ear (BTE) device. Twenty-nine elderly hearing-impaired people with a mild-to-moderate hearing loss were fitted with both an ITE and a BTE hearing aid with similar electroacoustic performance. Both hearing aids were linear with output compression limiting and were fitted in a randomized order. After wearing each device for a six-week period, subj ets were asked to select the hearing aid they preferred. Variables significantly related to hearing aid choice, use and perceived benefit included ease of management, accuracy with which the NAL-R insertion gain target was achieved, earmould comfort and the type of hearing aid the client preferred initially.

  1. Localization ability with bimodal hearing aids and bilateral cochlear implants

    Science.gov (United States)

    Seeber, Bernhard U.; Baumann, Uwe; Fastl, Hugo

    2004-09-01

    After successful cochlear implantation in one ear, some patients continue to use a hearing aid at the contralateral ear. They report an improved reception of speech, especially in noise, as well as a better perception of music when the hearing aid and cochlear implant are used in this bimodal combination. Some individuals in this bimodal patient group also report the impression of an improved localization ability. Similar experiences are reported by the group of bilateral cochlear implantees. In this study, a survey of 11 bimodally and 4 bilaterally equipped cochlear implant users was carried out to assess localization ability. Individuals in the bimodal implant group were all provided with the same type of hearing aid in the opposite ear, and subjects in the bilateral implant group used cochlear implants of the same manufacturer on each ear. Subjects adjusted the spot of a computer-controlled laser-pointer to the perceived direction of sound incidence in the frontal horizontal plane by rotating a trackball. Two subjects of the bimodal group who had substantial residual hearing showed localization ability in the bimodal configuration, whereas using each single device only the subject with better residual hearing was able to discriminate the side of sound origin. Five other subjects with more pronounced hearing loss displayed an ability for side discrimination through the use of bimodal aids, while four of them were already able to discriminate the side with a single device. Of the bilateral cochlear implant group one subject showed localization accuracy close to that of normal hearing subjects. This subject was also able to discriminate the side of sound origin using the first implanted device alone. The other three bilaterally equipped subjects showed limited localization ability using both devices. Among them one subject demonstrated a side-discrimination ability using only the first implanted device.

  2. Threshold improvement and acoustic gain with hearing aids.

    Science.gov (United States)

    Walden, B E; Kasten, R N

    1976-01-01

    Aided speech reception thresholds were obtained from 20 hearing-impaired listeners with three hearing aids adjusted to confort settings, and with the aids adjusted to deliver 40 dB of acoustic gain. The aided speech reception threshold under each condition was substracted from the unaided speech reception threshold to yield a measure of threshold improvement. Threshold improvement and acoustic gain comparisons revealed that, at comfort setting, these two measures were quite similar. However, at the 40-dB gain setting, acoustic gain exceeded threshold improvement by an average of 5.6 dB. For the high-gain condition, it appeared that the threshold improvement obtained by subjects with relatively good unaided sensitivity was limited by the ambient noise in the test chamber. PMID:938347

  3. Threshold improvement and acoustic gain with hearing aids.

    Science.gov (United States)

    Walden, B E; Kasten, R N

    1976-01-01

    Aided speech reception thresholds were obtained from 20 hearing-impaired listeners with three hearing aids adjusted to confort settings, and with the aids adjusted to deliver 40 dB of acoustic gain. The aided speech reception threshold under each condition was substracted from the unaided speech reception threshold to yield a measure of threshold improvement. Threshold improvement and acoustic gain comparisons revealed that, at comfort setting, these two measures were quite similar. However, at the 40-dB gain setting, acoustic gain exceeded threshold improvement by an average of 5.6 dB. For the high-gain condition, it appeared that the threshold improvement obtained by subjects with relatively good unaided sensitivity was limited by the ambient noise in the test chamber.

  4. A programmable sound processor for advanced hearing aid research.

    Science.gov (United States)

    McDermott, H

    1998-03-01

    A portable sound processor has been developed to facilitate research on advanced hearing aids. Because it is based on a digital signal processing integrated circuit (Motorola DSP56001), it can readily be programmed to execute novel algorithms. Furthermore, the parameters of these algorithms can be adjusted quickly and easily to suit the specific hearing characteristics of users. In the processor, microphone signals are digitized to a precision of 12 bits at a sampling rate of approximately 12 kHz for input to the DSP device. Subsequently, processed samples are delivered to the earphone by a novel, fully-digital class-D driver. This driver provides the advantages of a conventional class-D amplifier (high maximum output, low power consumption, low distortion) without some of the disadvantages (such as the need for precise analog circuitry). In addition, a cochlear implant driver is provided so that the processor is suitable for hearing-impaired people who use an implant and an acoustic hearing aid together. To reduce the computational demands on the DSP device, and therefore the power consumption, a running spectral analysis of incoming signals is provided by a custom-designed switched-capacitor integrated circuit incorporating 20 bandpass filters. The complete processor is pocket-sized and powered by batteries. An example is described of its use in providing frequency-shaped amplification for aid users with severe hearing impairment. Speech perception tests confirmed that the processor performed significantly better than the subjects' own hearing aids, probably because the digital filter provided a frequency response generally closer to the optimum for each user than the simpler analog aids.

  5. Self-reported disability and handicap after hearing-aid fitting and benefit of hearing aids: comparison of fitting procedures, degree of hearing loss, experience with hearing aids and uni- and bilateral fittings

    NARCIS (Netherlands)

    M. Metselaar; B. Maat; P. Krijnen; H. Verschuure; W.A. Dreschler; L. Feenstra

    2009-01-01

    Self-reported outcome on hearing disability and handicap as well as overall health-related quality of life were measured after hearing-aid fitting in a large-scale clinical population. Fitting was performed according to two different procedures in a double-blind study design. We used a comparative p

  6. Self-reported disability and handicap after hearing-aid fitting and benefit of hearing aids : comparison of fitting procedures, degree of hearing loss, experience with hearing aids and uni- and bilateral fittings

    NARCIS (Netherlands)

    Metselaar, Mick; Maat, Bert; Krijnen, Pieta; Verschuure, Hans; Dreschler, Wouter A; Feenstra, Louw

    2009-01-01

    Self-reported outcome on hearing disability and handicap as well as overall health-related quality of life were measured after hearing-aid fitting in a large-scale clinical population. Fitting was performed according to two different procedures in a double-blind study design. We used a comparative p

  7. NIST System for Measuring the Directivity Index of Hearing Aids under Simulated Real-Ear Conditions

    OpenAIRE

    Wagner, Randall P.

    2013-01-01

    The directivity index is a parameter that is commonly used to characterize the performance of directional hearing aids, and is determined from the measured directional response. Since this response is different for a hearing aid worn on a person as compared to when it is in a free field, directivity index measurements of hearing aids are usually done under simulated real-ear conditions. Details are provided regarding the NIST system for measuring the hearing aid directivity index under these ...

  8. History of the technological development of air conduction hearing aids.

    Science.gov (United States)

    Mudry, A; Dodelé, L

    2000-06-01

    This was a study of the history of the technological development of air conduction hearing aids, and a review of international literature on the subject. The technological evolution of amplification devices, from their origin to the present day, can be divided into seven distinct periods: the period of sound collectors, the period of hearing devices constructed from carbon, the period of vacuum tubes, the transistor period, the period of integrated circuits, the microprocessor period and the period of digital hearing instruments. Throughout these different stages, hearing instruments have progressively developed reaching their present state. The current era is itself undergoing constant development and change. With the introduction of new technologies, we expect that the rate of change will increase rapidly in the future.

  9. 47 CFR 64.608 - Provision of hearing aid compatible telephones by exchange carriers.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Provision of hearing aid compatible telephones... Provision of hearing aid compatible telephones by exchange carriers. In the absence of alternative suppliers in an exchange area, an exchange carrier must provide a hearing aid compatible telephone, as...

  10. 47 CFR 68.415 - Hearing aid-compatibility and volume control informal complaints.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Hearing aid-compatibility and volume control... Procedures § 68.415 Hearing aid-compatibility and volume control informal complaints. Persons with complaints... complaints regarding rules in this part pertaining to hearing aid compatibility and volume control, may...

  11. 78 FR 2653 - Comment Deadline Extended for Updated Information and Comment on Review of Hearing Aid...

    Science.gov (United States)

    2013-01-14

    ... comments in its ongoing review of the wireless hearing aid compatibility rules (77 FR 72294, December 5... comment on review of hearing aid compatibility regulations. DATES: Comments are due on or before January... Review of Hearing Aid Compatibility Regulations Public Notice is available on the Internet at...

  12. 21 CFR 874.3320 - Group hearing aid or group auditory trainer.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Group hearing aid or group auditory trainer. 874.3320 Section 874.3320 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... hearing aid or group auditory trainer. (a) Identification. A group hearing aid or group auditory...

  13. 47 CFR 68.224 - Notice of non-hearing aid compatibility.

    Science.gov (United States)

    2010-10-01

    ... (CONTINUED) CONNECTION OF TERMINAL EQUIPMENT TO THE TELEPHONE NETWORK Terminal Equipment Approval Procedures § 68.224 Notice of non-hearing aid compatibility. Every non-hearing aid compatible telephone offered... telephone is not hearing aid compatible, as is defined in §§ 68.4(a)(3) and 68.316, or if offered for...

  14. Musicians and hearing aid design--is your hearing instrument being overworked?

    Science.gov (United States)

    Schmidt, Mark

    2012-09-01

    Music can have sound levels that are in excess of the capability of most modern digital hearing aids to transduce sound without significant distortion. One innovation is to use a hearing aid microphone that is less sensitive to some of the lower frequency intense components of music, thereby providing the analog-to-digital (A/D) converter with an input that is within its optimal operating region. The "missing" low-frequency information can still enter through an unoccluded earmold as unamplified sound and be part of the entire music listening experience. Technical issues with this alternative microphone configuration include an increase in the internal noise floor of the hearing aid, but with judicious use of expansion, the noise floor can significantly be reduced. Other issues relate to fittings where significant low-frequency amplification is also required, but this type of fitting can be optimized in the fitting software by adding amplification after the A/D bottle neck. PMID:23258617

  15. Hearing aid manipulation skills in an elderly population: a comparison of ITE, BTE, and ITC aids.

    Science.gov (United States)

    Upfold, L J; May, A E; Battaglia, J A

    1990-10-01

    In-the-ear, in-the-canal and behind-the-ear hearing aids were compared for ease of management by elderly people. Two hundred and forty-four clients were randomly assigned to be fitted with one aid type, and rated for ability to perform the manipulative tasks necessary to enable effective use of the aid. It was found that in-the-ear aids were easiest to use, that females experienced greater difficulties in manipulation than males and that some tasks were easier to perform and more quickly learned than others. The findings are discussed in terms of design requirements and aid fitting practices.

  16. Characterization of the dominant structural vibration of hearing aid receivers: Towards the moderation of mechanical feedback in hearing aids

    Science.gov (United States)

    Varanda, Brenno R.

    Presented are the results from the experimental, analytical, and computational analyses accomplished to characterize the mechanical vibration of hearing aid receivers, a key electro-acoustic component of hearing aids. The function of a receiver in a hearing aid is to provide an amplified sound signal into the ear canal. Unfortunately, as the receiver produces sound, it also undergoes vibration which can be transmitted through the hearing aid package to the microphones, resulting in undesirable feedback oscillations. To gain more knowledge and control on the source of these feedback oscillations, a dynamic rigid body model of the receiver is proposed. The rigid body model captures the essential dynamic features of the receiver. The model is represented by two hinged rigid bodies, under an equal and opposite dynamic moment load, and connected to each other by a torsional spring and damper. The mechanical coupling ratio between the two rigid bodies is proved to be acoustically independent. A method is introduced to estimate the parameters for the proposed model using experimental data. An equivalent finite element analysis model is established and tested against a known and characterized mechanical attachment. The simulated model successfully predicts the structural dynamic response showing excellent agreement between the finite element analysis and measured results.

  17. Sound exposure measurements using hearing-aid technology

    DEFF Research Database (Denmark)

    Jensen, Simon Boelt; Mads, Drastrup; Chávez Morales, Esteban;

    2016-01-01

    scenarios. The purpose of this work is to document the use of a modified behind-the-ear (BTE) hearing-aid as a portable sound pressure level (SPL) meter. In order to obtain sound level measurements with a BTE device comparable to sound field values that can be used with existing risk assessment strategies......Sound exposure is one of the primary causes of preventable hearing loss. Traditionally, sound exposure has been associated to industrial settings, and as such, treated as an occupational safety issue leading to international standards regulating sound exposure to improve working conditions. High...

  18. Hearing aid processing of loud speech and noise signals: Consequences for loudness perception and listening comfort

    DEFF Research Database (Denmark)

    Schmidt, Erik

    2007-01-01

    Hearing aid processing of loud speech and noise signals: Consequences for loudness perception and listening comfort. Sound processing in hearing aids is determined by the fitting rule. The fitting rule describes how the hearing aid should amplify speech and sounds in the surroundings......, such that they become audible again for the hearing impaired person. The general goal is to place all sounds within the hearing aid users’ audible range, such that speech intelligibility and listening comfort become as good as possible. Amplification strategies in hearing aids are in many cases based on empirical...... research -for example investigations of loudness perception in hearing impaired listeners. Most research has been focused on speech and sounds at medium input-levels (e.g., 60-65 dB SPL). It is well documented that for speech at conversational levels, hearing aid-users prefer the signal to be amplified...

  19. Active cancellation of occlusion: an electronic vent for hearing aids and hearing protectors.

    Science.gov (United States)

    Mejia, Jorge; Dillon, Harvey; Fisher, Michael

    2008-07-01

    The occlusion effect is commonly described as an unnatural and mostly annoying quality of the voice of a person wearing hearing aids or hearing protectors. As a result, it is often reported by hearing aid users as a deterrent to wearing hearing aids. This paper presents an investigation into active occlusion cancellation. Measured transducer responses combined with models of an active feedback scheme are first examined in order to predict the effectiveness of occlusion reduction. The simulations predict 18 dB of occlusion reduction in completely blocked ear canals. Simulations incorporating a 1 mm vent (providing passive occlusion reduction) predict a combined active and passive occlusion reduction of 20 dB. A prototype occlusion canceling system was constructed. Averaged across 12 listeners with normal hearing, it provided 15 dB of occlusion reduction. Ten of the subjects reported a more natural own voice quality and an appreciable increase in comfort with the cancellation active, and 11 out of the 12 preferred the active system over the passive system. PMID:18646971

  20. Interventions after screening for hearing difficulties: a retrospective investigation of interventions other than hearing aids

    Directory of Open Access Journals (Sweden)

    Dafydd Stephens

    2011-03-01

    Full Text Available There have been a number of studies on screening of hearing in adult populations. Despite the high importance of interventions following screening for hearing (Wilson and Jungner, 1968 there is a dearth of information on the nature of interventions following such screening, other than hearing aid fitting (HA or referral to audiology/ENT departments (Pronk et al., 2011. In the late 1980s and early 1990s four studies were performed in Wales, which offered such other interventions to those individuals indicating hearing disabilities in screening questionnaires (eg Stephens et al., 1990; Davis et al., 1992. The majority of the patient notes from these studies were still accessible and have been examined to extract the following information: - what interventions were used other than hearing aids? - who received these interventions? - would they have been more appropriate than HAs for some of those fitted? The aim of this paper is to list the interventions provided in these studies and relate them to the initial complaints of those indicating hearing problems.

  1. Using hearing aid directional microphones and noise reduction algorithms to enhance cochlear implant performance

    OpenAIRE

    Chung, K; Zeng, F G; Waltzman, S

    2004-01-01

    Hearing aids and cochlear implants are two major hearing enhancement technologies but yet share little in research and development. The purpose of this study was to determine whether hearing aid directional microphones and noise reduction technologies could enhance cochlear implant users' speech understanding and ease of listening. Digital hearing aids serving as preprocessors were programmed to omni-directional microphone, directional microphone, and directional microphone plus noise reducti...

  2. Achieving effective hearing aid fitting within one month after identification of childhood permanent hearing impairment.

    Science.gov (United States)

    Bastanza, G; Gallus, R; De Carlini, M; Picciotti, P M; Muzzi, E; Ciciriello, E; Orzan, E; Conti, G

    2016-02-01

    Diagnosis of child permanent hearing impairment (PHI) can be made with extreme timeliness compared to the past thanks to improvements in PHI identification through newborn hearing screening programmes. It now becomes essential to provide an effective amplification as quickly as possible in order to restore auditory function and favour speech and language development. The early fitting of hearing aids and possible later cochlear implantation indeed prompts the development of central auditory pathways, connections with secondary sensory brain areas, as well as with motor and articulatory cortex. The aim of this paper is to report the results of a strategic analysis that involves identification of strengths, weaknesses, opportunities and threats regarding the process of achieving early amplification in all cases of significant childhood PHI. The analysis is focused on the Italian situation and is part of the Italian Ministry of Health project CCM 2013 "Preventing Communication Disorders: a Regional Program for Early Identification, Intervention and Care of Hearing Impaired Children".

  3. Self-Fitting Hearing Aids: Status Quo and Future Predictions.

    Science.gov (United States)

    Keidser, Gitte; Convery, Elizabeth

    2016-01-01

    A self-contained, self-fitting hearing aid (SFHA) is a device that enables the user to perform both threshold measurements leading to a prescribed hearing aid setting and fine-tuning, without the need for audiological support or access to other equipment. The SFHA has been proposed as a potential solution to address unmet hearing health care in developing countries and remote locations in the developed world and is considered a means to lower cost and increase uptake of hearing aids in developed countries. This article reviews the status of the SFHA and the evidence for its feasibility and challenges and predicts where it is heading. Devices that can be considered partly or fully self-fitting without audiological support were identified in the direct-to-consumer market. None of these devices are considered self-contained as they require access to other hardware such as a proprietary interface, computer, smartphone, or tablet for manipulation. While there is evidence that self-administered fitting processes can provide valid and reliable results, their success relies on user-friendly device designs and interfaces and easy-to-interpret instructions. Until these issues have been sufficiently addressed, optional assistance with the self-fitting process and on-going use of SFHAs is recommended. Affordability and a sustainable delivery system remain additional challenges for the SFHA in developing countries. Future predictions include a growth in self-fitting products, with most future SFHAs consisting of earpieces that connect wirelessly with a smartphone and providers offering assistance through a telehealth infrastructure, and the integration of SFHAs into the traditional hearing health-care model. PMID:27072929

  4. Self-Fitting Hearing Aids: Status Quo and Future Predictions.

    Science.gov (United States)

    Keidser, Gitte; Convery, Elizabeth

    2016-04-12

    A self-contained, self-fitting hearing aid (SFHA) is a device that enables the user to perform both threshold measurements leading to a prescribed hearing aid setting and fine-tuning, without the need for audiological support or access to other equipment. The SFHA has been proposed as a potential solution to address unmet hearing health care in developing countries and remote locations in the developed world and is considered a means to lower cost and increase uptake of hearing aids in developed countries. This article reviews the status of the SFHA and the evidence for its feasibility and challenges and predicts where it is heading. Devices that can be considered partly or fully self-fitting without audiological support were identified in the direct-to-consumer market. None of these devices are considered self-contained as they require access to other hardware such as a proprietary interface, computer, smartphone, or tablet for manipulation. While there is evidence that self-administered fitting processes can provide valid and reliable results, their success relies on user-friendly device designs and interfaces and easy-to-interpret instructions. Until these issues have been sufficiently addressed, optional assistance with the self-fitting process and on-going use of SFHAs is recommended. Affordability and a sustainable delivery system remain additional challenges for the SFHA in developing countries. Future predictions include a growth in self-fitting products, with most future SFHAs consisting of earpieces that connect wirelessly with a smartphone and providers offering assistance through a telehealth infrastructure, and the integration of SFHAs into the traditional hearing health-care model.

  5. Effect of Hearing Aids on Auditory Function in Infants with Perinatal Brain Injury and Severe Hearing Loss

    Science.gov (United States)

    Moreno-Aguirre, Alma Janeth; Santiago-Rodríguez, Efraín; Harmony, Thalía; Fernández-Bouzas, Antonio

    2012-01-01

    Background Approximately 2–4% of newborns with perinatal risk factors present with hearing loss. Our aim was to analyze the effect of hearing aid use on auditory function evaluated based on otoacoustic emissions (OAEs), auditory brain responses (ABRs) and auditory steady state responses (ASSRs) in infants with perinatal brain injury and profound hearing loss. Methodology/Principal Findings A prospective, longitudinal study of auditory function in infants with profound hearing loss. Right side hearing before and after hearing aid use was compared with left side hearing (not stimulated and used as control). All infants were subjected to OAE, ABR and ASSR evaluations before and after hearing aid use. The average ABR threshold decreased from 90.0 to 80.0 dB (p = 0.003) after six months of hearing aid use. In the left ear, which was used as a control, the ABR threshold decreased from 94.6 to 87.6 dB, which was not significant (p>0.05). In addition, the ASSR threshold in the 4000-Hz frequency decreased from 89 dB to 72 dB (p = 0.013) after six months of right ear hearing aid use; the other frequencies in the right ear and all frequencies in the left ear did not show significant differences in any of the measured parameters (p>0.05). OAEs were absent in the baseline test and showed no changes after hearing aid use in the right ear (p>0.05). Conclusions/Significance This study provides evidence that early hearing aid use decreases the hearing threshold in ABR and ASSR assessments with no functional modifications in the auditory receptor, as evaluated by OAEs. PMID:22808289

  6. Relationship between Acceptable Noise Level and the Abbreviated Profile of Hearing Aid Benefit

    Science.gov (United States)

    Freyaldenhoven, Melinda C.; Nabelek, Anna K.; Tampas, Joanna W.

    2008-01-01

    Purpose: This study investigated the relationship between acceptable noise levels (ANLs) and the Abbreviated Profile of Hearing Aid Benefit (APHAB; R. M. Cox & G. C. Alexander, 1995). This study further examined the APHAB's ability to predict hearing aid use. Method: ANL and APHAB data were collected for 191 listeners with impaired hearing,…

  7. 75 FR 63764 - Hearing Aid Compatibility Proceeding; Request That Comments Address Effects of New Legislation

    Science.gov (United States)

    2010-10-18

    ... to the rules governing hearing aid compatibility of mobile handsets. 75 FR 54546 (Sept. 8, 2010... COMMISSION 47 CFR Part 20 Hearing Aid Compatibility Proceeding; Request That Comments Address Effects of New..., the Wireless Telecommunications Bureau requests that the comments in the pending Hearing...

  8. Aided and unaided speech perception by older hearing impaired listeners.

    Directory of Open Access Journals (Sweden)

    David L Woods

    Full Text Available The most common complaint of older hearing impaired (OHI listeners is difficulty understanding speech in the presence of noise. However, tests of consonant-identification and sentence reception threshold (SeRT provide different perspectives on the magnitude of impairment. Here we quantified speech perception difficulties in 24 OHI listeners in unaided and aided conditions by analyzing (1 consonant-identification thresholds and consonant confusions for 20 onset and 20 coda consonants in consonant-vowel-consonant (CVC syllables presented at consonant-specific signal-to-noise (SNR levels, and (2 SeRTs obtained with the Quick Speech in Noise Test (QSIN and the Hearing in Noise Test (HINT. Compared to older normal hearing (ONH listeners, nearly all unaided OHI listeners showed abnormal consonant-identification thresholds, abnormal consonant confusions, and reduced psychometric function slopes. Average elevations in consonant-identification thresholds exceeded 35 dB, correlated strongly with impairments in mid-frequency hearing, and were greater for hard-to-identify consonants. Advanced digital hearing aids (HAs improved average consonant-identification thresholds by more than 17 dB, with significant HA benefit seen in 83% of OHI listeners. HAs partially normalized consonant-identification thresholds, reduced abnormal consonant confusions, and increased the slope of psychometric functions. Unaided OHI listeners showed much smaller elevations in SeRTs (mean 6.9 dB than in consonant-identification thresholds and SeRTs in unaided listening conditions correlated strongly (r = 0.91 with identification thresholds of easily identified consonants. HAs produced minimal SeRT benefit (2.0 dB, with only 38% of OHI listeners showing significant improvement. HA benefit on SeRTs was accurately predicted (r = 0.86 by HA benefit on easily identified consonants. Consonant-identification tests can accurately predict sentence processing deficits and HA benefit in OHI

  9. Mechanical characterization of bone anchors used with a bone-attached, parallel robot for skull surgery.

    Science.gov (United States)

    Kobler, Jan-Philipp; Prielozny, Lenka; Lexow, G Jakob; Rau, Thomas S; Majdani, Omid; Ortmaier, Tobias

    2015-05-01

    Bone-attached robots and microstereotactic frames, intended for deep brain stimulation and minimally invasive cochlear implantation, typically attach to a patient's skull via bone anchors. A rigid and reliable link between such devices and the skull is mandatory in order to fulfill the high accuracy demands of minimally invasive procedures while maintaining patient safety. In this paper, a method is presented to experimentally characterize the mechanical properties of the anchor-bone linkage. A custom-built universal testing machine is used to measure the pullout strength as well as the spring constants of bone anchors seated in four different bone substitutes as well as in human cranial bone. Furthermore, the angles at which forces act on the bone anchors are varied to simulate realistic conditions. Based on the experimental results, a substitute material that has mechanical properties similar to those of cranial bone is identified. The results further reveal that the pullout strength of the investigated anchor design is sufficient with respect to the proposed application. However, both the measured load capacity as well as the spring constants vary depending on the load angles. Based on these findings, an alternative bone anchor design is presented and experimentally validated. Furthermore, the results serve as a basis for stiffness simulation and optimization of bone-attached microstereotactic frames. PMID:25771430

  10. Development of a music perception test for adult hearing-aid users

    Directory of Open Access Journals (Sweden)

    Marinda Uys

    2011-11-01

    Full Text Available The purpose of this research was two-fold. Firstly to develop a music perception test for hearing aid users and secondly to evaluate the influence of non-linear frequency compression (NFC on music perception with the use of the self-compiled test. This article focuses on the description of the development and validation of a music perception test. To date, the main direction in frequency lowering hearing aid studies has been in relation to speech perception abilities. With improvements in hearing aid technology, interest in musical perception as a dimension that could improve hearing aid users’ quality of life grew. The Music Perception Test (MPT was designed to evaluate different aspects of rhythm, timbre, pitch and melody. The development of the MPT could be described as design based. Phase 1 of the study included test development and recording while Phase 2 entailed presentation of stimuli to normal hearing listeners (n=15 and hearing aid users (n=4. Based on the findings of Phase 2, item analysis was performed to eliminate or change stimuli that resulted in high error rates. During Phase 3 the adapted version of the test was performed on a smaller group of normal hearing listeners (n=4 and twenty hearing aid users. Results proved that normal hearing adults as well as adults using hearing aids were able to complete all the sub-tests of the MPT although hearing aid users scored less on the various sub-tests than normal hearing listeners. For the rhythm section of the MPT normal hearing listeners scored on average 93.8% versus 75.5% of hearing aid users and 83% for the timbre section compared to 62.3% by hearing aid users. Normal hearing listeners obtained an average score of 86.3% for the pitch section and 88.2% for the melody section compared to the 70.8% and 61.9% respectively obtained by hearing aid users. This implicates that the MPT can be used successfully for assessment of music perception in hearing aid users within the South African

  11. Improved prediction error filters for adaptive feedback cancellation in hearing aids

    OpenAIRE

    Ngo, Kim; van Waterschoot, Toon; Christensen, Mads Græsbøll; Moonen, Marc; Jensen, Søren Holdt

    2013-01-01

    Acoustic feedback is a well-known problem in hearing aids, caused by the undesired acoustic coupling between the hearing aid loudspeaker and microphone. Acoustic feedback produces annoying howling sounds and limits the maximum achievable hearing aid amplification. This paper is focused on adaptive feedback cancellation (AFC) where the goal is to adaptively model the acoustic feedback path and estimate the feedback signal, which is then subtracted from the microphone signal. The main problem i...

  12. The Personal Hearing System—A Software Hearing Aid for a Personal Communication System

    Directory of Open Access Journals (Sweden)

    Giso Grimm

    2009-01-01

    Full Text Available A concept and architecture of a personal communication system (PCS is introduced that integrates audio communication and hearing support for the elderly and hearing-impaired through a personal hearing system (PHS. The concept envisions a central processor connected to audio headsets via a wireless body area network (WBAN. To demonstrate the concept, a prototype PCS is presented that is implemented on a netbook computer with a dedicated audio interface in combination with a mobile phone. The prototype can be used for field-testing possible applications and to reveal possibilities and limitations of the concept of integrating hearing support in consumer audio communication devices. It is shown that the prototype PCS can integrate hearing aid functionality, telephony, public announcement systems, and home entertainment. An exemplary binaural speech enhancement scheme that represents a large class of possible PHS processing schemes is shown to be compatible with the general concept. However, an analysis of hardware and software architectures shows that the implementation of a PCS on future advanced cell phone-like devices is challenging. Because of limitations in processing power, recoding of prototype implementations into fixed point arithmetic will be required and WBAN performance is still a limiting factor in terms of data rate and delay.

  13. Experimental investigation on corrosion properties of LDS MID for Hearing Aid applications

    DEFF Research Database (Denmark)

    Islam, Aminul; Hansen, Hans Nørgaard; Risager, Flemming;

    2014-01-01

    The trend towards miniaturization is ever going in the hearing aid industry. The Moulded Interconnect Device (MID) technology can offer the unique possibility to reduce the size of the hearing aids by combining electrical and mechanical functions in the same components. On the other hand, one...... of the main concerns for MIDs in hearing aids is the corrosion of metal tracks. This paper investigates the corrosion of the MID parts based on different base materials, layer thickness and mechanical wear of the MIDs. The results presented in the paper will be useful for designing MIDs in hearing aids...

  14. Improved prediction error filters for adaptive feedback cancellation in hearing aids

    DEFF Research Database (Denmark)

    Ngo, Kim; van Waterschoot, Toon; Christensen, Mads Græsbøll;

    2013-01-01

    Acoustic feedback is a well-known problem in hearing aids, caused by the undesired acoustic coupling between the hearing aid loudspeaker and microphone. Acoustic feedback produces annoying howling sounds and limits the maximum achievable hearing aid amplification. This paper is focused on adaptive...... a number of improved PEF designs that are inspired by harmonic sinusoidal modeling and pitch prediction of speech signals. The resulting PEM-based AFC algorithms are evaluated in terms of the maximum stable gain (MSG), filter misadjustment, and computational complexity. Simulation results for a hearing aid...

  15. Direct hearing aid referral: the effect upon outpatient waiting times in a district general hospital.

    OpenAIRE

    Fox, G C; Sharp, J F

    1994-01-01

    One hundred elderly patients referred for hearing aids have been assessed with a view to setting up a direct hearing aid referral system, based upon the criteria laid down by the liaison group for Technicians, Therapists and Scientists in Audiology (TTSA). Sixty-three per cent of the patients could have been fitted with a hearing aid directly. Adequate prior wax removal, could increase this figure to 84%, with a reduction in the waiting time for a hearing aid of 6.1 months.

  16. Development of a music perception test for adult hearing-aid users.

    Science.gov (United States)

    Uys, Marinda; van Dijk, Catherine

    2011-10-01

    The purpose of this research was twofold: firstly, to develop a music perception test (MPT) for hearing-aid users, and secondly, to evaluate the influence of non-linear frequency compression (NFC) on music perception with the use of the self-compiled test. This article focuses on the description of the development and validation of the MPT. To date, the main direction in frequency-lowering hearing-aid studies has been in relation to speech perception abilities. As hearing-aid technology has improved, interest has grown in musical perception as a dimension that could improve hearing-aid users' quality of life. The MPT was designed to evaluate different aspects of rhythm, timbre, pitch and melody. The development of the MPT could be described as design-based. Phase 1 of the study included test development and recording, while phase 2 entailed presentation of stimuli to normal hearing listeners (n = 15) and hearing-aid users (n = 4). Based on the findings of phase 2, item analysis was performed to eliminate or change stimuli that resulted in high error rates. During phase 3 the adapted version of the test was performed on a smaller group of normal hearing listeners (n = 4) and 20 hearing-aid users. Results proved that adults with normal hearing as well as adults using hearing aids were able to complete all the sub-tests of the MPT, although hearing-aid users scored lower on the various sub-tests than normal hearing listeners. For the rhythm section of the MPT normal hearing listeners scored on average 93.8% versus 75.5% of hearing-aid users; for the timbre section the scores were 83% versus 62.3% respectively. Normal hearing listeners obtained an average score of 86.3% for the pitch section and 88.2% for the melody section, compared with the 70.8% and 61.9% respectively obtained by hearing-aid users. This implies that the MPT can be used successfully for assessment of music perception in hearing-aid users within the South African context and may therefore result in

  17. A micro-drive hearing aid: a novel non-invasive hearing prosthesis actuator.

    Science.gov (United States)

    Paulick, Peyton Elizabeth; Merlo, Mark W; Mahboubi, Hossein; Djalilian, Hamid R; Bachman, Mark

    2014-12-01

    The direct hearing device (DHD) is a new auditory prosthesis that combines conventional hearing aid and middle ear implant technologies into a single device. The DHD is located deep in the ear canal and recreates sounds with mechanical movements of the tympanic membrane. A critical component of the DHD is the microactuator, which must be capable of moving the tympanic membrane at frequencies and magnitudes appropriate for normal hearing, with little distortion. The DHD actuator reported here utilized a voice coil actuator design and was 3.7 mm in diameter. The device has a smoothly varying frequency response and produces a precisely controllable force. The total harmonic distortion between 425 Hz and 10 kHz is below 0.5 % and acoustic noise generation is minimal. The device was tested as a tympanic membrane driver on cadaveric temporal bones where the device was coupled to the umbo of the tympanic membrane. The DHD successfully recreated ossicular chain movements across the frequencies of human hearing while demonstrating controllable magnitude. Moreover, the micro-actuator was validated in a short-term human clinical performance study where sound matching and complex audio waveforms were evaluated by a healthy subject.

  18. A micro-drive hearing aid: a novel non-invasive hearing prosthesis actuator.

    Science.gov (United States)

    Paulick, Peyton Elizabeth; Merlo, Mark W; Mahboubi, Hossein; Djalilian, Hamid R; Bachman, Mark

    2014-12-01

    The direct hearing device (DHD) is a new auditory prosthesis that combines conventional hearing aid and middle ear implant technologies into a single device. The DHD is located deep in the ear canal and recreates sounds with mechanical movements of the tympanic membrane. A critical component of the DHD is the microactuator, which must be capable of moving the tympanic membrane at frequencies and magnitudes appropriate for normal hearing, with little distortion. The DHD actuator reported here utilized a voice coil actuator design and was 3.7 mm in diameter. The device has a smoothly varying frequency response and produces a precisely controllable force. The total harmonic distortion between 425 Hz and 10 kHz is below 0.5 % and acoustic noise generation is minimal. The device was tested as a tympanic membrane driver on cadaveric temporal bones where the device was coupled to the umbo of the tympanic membrane. The DHD successfully recreated ossicular chain movements across the frequencies of human hearing while demonstrating controllable magnitude. Moreover, the micro-actuator was validated in a short-term human clinical performance study where sound matching and complex audio waveforms were evaluated by a healthy subject. PMID:25129112

  19. Auditory, Visual, and Auditory-Visual Perception of Emotions by Individuals with Cochlear Implants, Hearing Aids, and Normal Hearing

    Science.gov (United States)

    Most, Tova; Aviner, Chen

    2009-01-01

    This study evaluated the benefits of cochlear implant (CI) with regard to emotion perception of participants differing in their age of implantation, in comparison to hearing aid users and adolescents with normal hearing (NH). Emotion perception was examined by having the participants identify happiness, anger, surprise, sadness, fear, and disgust.…

  20. Validation of the Swedish Hearing Handicap Inventory for the Elderly (Screening Version) and Evaluation of Its Effect in Hearing Aid Rehabilitation.

    Science.gov (United States)

    Öberg, Maria

    2016-03-23

    Self-reports of subjective hearing difficulties by people with hearing loss may be a useful complement to audiometry in hearing aid rehabilitation. To be useful, such self-reports need to be reliable. This study investigated the reliability and the validity of the Swedish Hearing Handicap Inventory for the Elderly (Screening Version; HHIE-S). Sixty-nine participants completed a questionnaire before hearing aid rehabilitation. Of these individuals, 49 completed hearing aid rehabilitation (aged between 23 and 94 years), and 41 of these 49 participants completed the questionnaire after completing the rehabilitation. The Swedish HHIE-S exhibited good internal consistency (Cronbach's alpha coefficient of .77). The questionnaire was effective for evaluating hearing aid rehabilitation, and a statistically significant reduction in hearing difficulties was observed. The clinicians found the questionnaire easy to administer and effective in hearing aid rehabilitation. The findings from the study support the use of the HHIE-S in clinical practice.

  1. Surgical repair of central slip avulsion injuries with Mitek bone anchor--retrospective analysis of a case series.

    LENUS (Irish Health Repository)

    Chan, Jeffrey C Y

    2007-01-01

    The purpose of this study is to describe our technique of central slip repair using the Mitek bone anchor and to evaluate the treatment outcome. Eight digits in eight patients were reconstructed using the bone anchor: three little fingers, two middle fingers, two index fingers and one ring finger. There were two immediate and six delayed repairs (range from one day to eight months). Four patients had pre-operative intensive splinting and physiotherapy to restore passive extension of the proximal interphalangeal joint prior to central slip reconstruction. All patients have made good progress since surgery. No patient requires a second procedure and none of the bone anchors have dislodged or loosened. We conclude that the Mitek bone anchor is a reliable technique to achieve soft tissue to bone fixation in central slip avulsion injuries. We recommend that this technique be considered as a treatment option for patients requiring surgical repair.

  2. Ormiaochracea as a Model Organism in Sound Localization Experiments and in Inventing Hearing Aids.

    Directory of Open Access Journals (Sweden)

    - -

    1998-09-01

    Full Text Available Hearing aid prescription for patients suffering hearing loss has always been one of the main concerns of the audiologists. Thanks to technology that has provided Hearing aids with digital and computerized systems which has improved the quality of sound heard by hearing aids. Though we can learn from nature in inventing such instruments as in the current article that has been channeled to a kind of fruit fly. Ormiaochracea is a small yellow nocturnal fly, a parasitoid of crickets. It is notable because of its exceptionally acute directional hearing. In the current article we will discuss how it has become a model organism in sound localization experiments and in inventing hearing aids.

  3. Comparative studies on hearing aid selection and fitting procedures : a review of the literature

    NARCIS (Netherlands)

    Metselaar, Mick; Maat, Bert; Verschuure, Hans; Dreschler, Wouter A; Feenstra, Louw

    2008-01-01

    Although a large number of fitting procedures have been developed and are nowadays generally applied in modern hearing aid fitting technology, little is known about their effectiveness in comparison with each other. This paper argues the need for comparative validation studies on hearing aid fitting

  4. Analysis of Beamformer Directed Single-Channel Noise Reduction System for Hearing Aid Applications

    DEFF Research Database (Denmark)

    Jensen, Jesper; Pedersen, Michael Syskind

    2015-01-01

    locations. In a hearing aid context, we analyze the performance of the estimators as a function of target angle-of-arrival and frequency. Finally, we demonstrate the advantage of the proposed method in a hearing aid situation with a target speaker in large-crowd noise....

  5. Electroacoustic Evaluation of Frequency-Modulated Receivers Interfaced with Personal Hearing Aids

    Science.gov (United States)

    Schafer, Erin C.; Thibodeau, Linda M.; Whalen, Holly S.; Overson, Gary J.

    2007-01-01

    Purpose: The purpose of this study was to compare the electroacoustic outputs of frequency-modulated (FM) systems coupled to hearing aids. Method: Electroacoustic performance of FM systems coupled to hearing aids was determined for 3 FM receivers: body-worn with neck loop, ear-level nonprogrammable, and ear-level programmable. Systems were…

  6. Education qualification levels and school careers of unilateral versus bilateral hearing aid users.

    NARCIS (Netherlands)

    Beijen, J.W.; Mylanus, E.A.M.; Snik, A.F.M.

    2007-01-01

    OBJECTIVE: Analyse the difference in school careers and secondary school qualification levels between unilateral hearing aid users and bilateral hearing aid users. STUDY DESIGN: Retrospective questionnaire study. SETTING: Postal-based questionnaire. PARTICIPANTS: Names of adults known to have been f

  7. Approximated affine projection algorithm for feedback cancellation in hearing aids.

    Science.gov (United States)

    Lee, Sangmin; Kim, In-Young; Park, Young-Cheol

    2007-09-01

    We propose an approximated affine projection (AP) algorithm for feedback cancellation in hearing aids. It is based on the conventional approach using the Gauss-Seidel (GS) iteration, but provides more stable convergence behaviour even with small step sizes. In the proposed algorithm, a residue of the weighted error vector, instead of the current error sample, is used to provide stable convergence. A new learning rate control scheme is also applied to the proposed algorithm to prevent signal cancellation and system instability. The new scheme determines step size in proportion to the prediction factor of the input, so that adaptation is inhibited whenever tone-like signals are present in the input. Simulation results verified the efficiency of the proposed algorithm. PMID:17644214

  8. The Frequency of Hearing Loss and Hearing Aid Prescription in the Clients of the Avesina Education and Health Center, Audiometry Clinic, 1377

    Directory of Open Access Journals (Sweden)

    Abbas Bastani

    2003-08-01

    Full Text Available Objective: Determining the frequency of hearing disorders and hearing aid using in the clients referring to the Avesina education and health center, audiometry clinic, 1377. Method and Material: This is an assesive-descriptive survey that conducted on more than 2053 (1234 males and 819 females who referred for audiometry after examination by a physician. Case history, otoscopy, PTA, speech and immittance audiometry were conducted for all the clients. The findings were expressed in tables and diagrams of frequency. The age and sex relationship. All types of hearing losses and the number of the hearing-impaired clients need a hearing aid were assessed. Findings: 56% of this population were hearing-impaired and 44% had normal hearing were hearing. 60% were males and 40% females. Of the hearing-impaired, 44% had SNHL, 35.6% CHL and 8.2% mixed hearing loss. The hearing aid was prescribed for 204 (83 females and121 males if they need that only 20 females and 32 males wear it. Conclusion: It this sample, SNHL is of higher frequency. According to this survey, the more the age, the more the hearing aid is accepted (85% of wearer are more than 49 the prevalence of the hearing impaired males are more than females (60% versus 40%. Only 25% of the hearing-impaired wear hearing aids.

  9. Guidance to the user of the hearing aid: retention of information

    Directory of Open Access Journals (Sweden)

    Geraldo, Tatiane

    Full Text Available Introduction: Different informations are transmitted to the new user of the hearing aid, in a short period of time. The user needs to understand and retain the information to subsequent recovery and action, ensuring the proper use of the device. Objective: check the information retention about the hearing loss and use/care with the hearing aid in new users of these devices. Examine whether there is influence of demographic data and audiologic. Method: Prospective study. Participants: 30 hearing impaired (18 women and 12 men, aged between 18 and 88 years. Were offered verbal orientation supported with ilustrations at the time of audiological diagnosis and adaptation of the hearing aid. There was practice for manipulation of the prosthesis. Three weeks after the adaptation, was performed a evaluation of the retention of information about hearing loss (free recall and use/care with the prosthesis (aided recall. The manipulation of the prosthesis was also evaluated. The responses and comments of the evaluator were noted in a specific protocol and scored. Results: On average the participants retained, respectively, 31,6% and 83,6% of informations about hearing loss in adults and elderly. There was no correlation between the retention of information with the degree in hearing loss, education and socioeconomic level. Conclusion: It's necessary the use of strategies that facilitate and improve the retention of the information about the audiological diagnosis, use and care with the hearing aid for new users of this device.

  10. Configuration of Digital Hearing Aid Easily Handled over Warped Frequency Axis in Fitting Process

    Science.gov (United States)

    Ogihara, Mitsuhiro; Takahashi, Kenzo; Mori, Mikio; Taniguchi, Shuji; Kato, Shozo; Araki, Chikahiro

    Recently, the digital and LSI based miniaturization technologies drastically have changed the hearing aids from the conventional single function of amplification to multiple functions. However, since the conventional hearing aids mostly control the flat gain at the center of a frequency band divided every octave to recover the auditory loss of users, so that the discontinuous gain tends to deteriorate the hearing quality due to the unnatural saw-teeth figured error. This paper proposes a solution of digital hearing aid which can be independently controlled at each audiogram test frequency and provide superb voice quality with less noise due to continuous variable gain characteristics in a wide dynamic range. The simulation results show the outstanding effect of the proposed scheme in the voice quality improvement which potential hearing aid users have considered to be a key to satisfy them.

  11. Verification and validation of hearing aids:Opportunity not an obstacle

    Institute of Scientific and Technical Information of China (English)

    Lindsey E. Jorgensen

    2016-01-01

    Verification and validation are objective and subjective measurements of hearing aid function. Many studies have provided rationales for performing these measurements as necessary for hearing aid practitioners to provide the highest level of care. Several researchers have suggested that completing these measurements as part of routine clinical care will reduce the number of return visits, reduce the number of aids returned for credit, and increase patient satisfaction. The purpose of this review article is to provide background, method and rationale for practitioners to use these measurements to improve their practice of hearing healthcare.

  12. Using a reflection model for modeling the dynamic feedback path of digital hearing aids

    DEFF Research Database (Denmark)

    Ma, Guilin; Gran, Fredrik; Jacobsen, Finn;

    2010-01-01

    Feedback whistling is one of the severe problems with hearing aids, especially in dynamic situations when the users hug, pick up a telephone, etc. This paper investigates the properties of the dynamic feedback paths of digital hearing aids and proposes a model based on a reflection assumption...... gain. The method is also extended to dual-microphone hearing aids to assess the possibility of relating the two dynamic feedback paths through the reflection model. However, it is found that in a complicated acoustic environment, the relation between the two feedback paths can be very intricate...

  13. Vibrant Soundbridge and Bone Conduction Hearing Aid in Patients with Bilateral Malformation of External Ear.

    Science.gov (United States)

    Mondelli, Maria Fernanda Capoani Garcia; Mariano, Thais Cristina Barbosa; Honório, Heitor Marques; Brito, Rubens Vuono de

    2016-01-01

    Introduction Hearing loss is the most common clinical finding in patients with malformation of the external ear canal. Among the possibilities of treatment, there is the adaptation of hearing aids by bone conduction and the adaptation of implantable hearing aids. Objective To assess speech perception with the use of Vibrant Soundbridge (VBS - MED-EL, Innsbruck, Austria) associated with additional amplification in patients with bilateral craniofacial malformation. Method We evaluated 11 patients with bilateral malformation over 12 years with mixed hearing loss or bilateral conductive. They were using the Softband (Oticon Medical, Sweden) and bone conduction hearing aid in the ear opposite the one with the VSB. We performed the evaluation of speech perception using the Hearing in Noise Test. Results Participants were eight men and three women with a mean of 19.5 years. The signal / noise ratio presented significant results in patients fitted with VSB and bone conduction hearing aid. Conclusion The results of speech perception were significantly better with use of VBS combined with bone conduction hearing aids.

  14. Vibrant Soundbridge and Bone Conduction Hearing Aid in Patients with Bilateral Malformation of External Ear

    Science.gov (United States)

    Mondelli, Maria Fernanda Capoani Garcia; Mariano, Thais Cristina Barbosa; Honório, Heitor Marques; Brito, Rubens Vuono de

    2015-01-01

    Introduction Hearing loss is the most common clinical finding in patients with malformation of the external ear canal. Among the possibilities of treatment, there is the adaptation of hearing aids by bone conduction and the adaptation of implantable hearing aids. Objective To assess speech perception with the use of Vibrant Soundbridge (VBS - MED-EL, Innsbruck, Austria) associated with additional amplification in patients with bilateral craniofacial malformation. Method We evaluated 11 patients with bilateral malformation over 12 years with mixed hearing loss or bilateral conductive. They were using the Softband (Oticon Medical, Sweden) and bone conduction hearing aid in the ear opposite the one with the VSB. We performed the evaluation of speech perception using the Hearing in Noise Test. Results Participants were eight men and three women with a mean of 19.5 years. The signal / noise ratio presented significant results in patients fitted with VSB and bone conduction hearing aid. Conclusion The results of speech perception were significantly better with use of VBS combined with bone conduction hearing aids. PMID:26722343

  15. Factors that influence intent to adopt a hearing aid among older people in Italy.

    Science.gov (United States)

    Cobelli, Nicola; Gill, Liz; Cassia, Fabio; Ugolini, Marta

    2014-11-01

    Hearing loss is one of the most prevalent health impairments associated with ageing in developed countries, and it can result in social, emotional and communication dysfunction. Hearing loss in Italy is increasing, yet, despite the availability of free hearing aids and access to qualified community-based health professionals specialising in audiology services, their uptake remains low (about 15%-20%). This paper presents an investigation of the possible reasons why older people in Italy resist adopting a hearing aid. We used the literature to identify factors influencing people with hearing loss's decision-making, and drew on the theory of reasoned action to create an explanatory model. To test our hypotheses, we applied a cross-sectional design. We developed a questionnaire including 13 items related to adopting a hearing aid. Health professionals identified 400 persons aged 60-90 who were candidates for a free hearing aid. Those willing to participate were sent a copy of the questionnaire and telephoned between August and September 2009; a total of 243 responded (response rate of 60.8%). Linear regression analysis highlighted that a person's intention to adopt a hearing aid was positively related to their attitude towards its adoption, but negatively linked to their perceived subjective norms. It was found that trust in the health professional does not moderate the relationship between a person's attitude and their intention to adopt a hearing aid, but trust mitigates the relationship between a person's perceived subjective norms and their intentions. These findings underline the importance of the potential role that the healthcare professional could play in reducing the uncertainty created by external social pressures. For this purpose, stronger collaboration between the various health professionals involved in hearing aid provision, from diagnosis to fitting, is recommended. PMID:25251979

  16. Age-related changes in auditory and cognitive abilities in elderly persons with hearing aids fitted at the initial stages of hearing loss

    Directory of Open Access Journals (Sweden)

    C. Obuchi

    2011-03-01

    Full Text Available In this study, we investigated the relation between the use of hearing aids at the initial stages of hearing loss and age-related changes in the auditory and cognitive abilities of elderly persons. 12 healthy elderly persons participated in an annual auditory and cognitive longitudinal examination for three years. According to their hearing level, they were divided into 3 subgroups - the normal hearing group, the hearing loss without hearing aids group, and the hearing loss with hearing aids group. All the subjects underwent 4 tests: pure-tone audiometry, syllable intelligibility test, dichotic listening test (DLT, and Wechsler Adult Intelligence Scale-Revised (WAIS-R Short Forms. Comparison between the 3 groups revealed that the hearing loss without hearing aids group showed the lowest scores for the performance tasks, in contrast to the hearing level and intelligibility results. The other groups showed no significant difference in the WAIS-R subtests. This result indicates that prescription of a hearing aid during the early stages of hearing loss is related to the retention of cognitive abilities in such elderly people. However, there were no statistical significant correlations between the auditory and cognitive tasks.

  17. A New Probe Noise Approach For Acoustic Feedback Cancellation In Hearing Aids

    DEFF Research Database (Denmark)

    Guo, Meng; Jensen, Søren Holdt; Jensen, Jesper

    Acoustic feedback is a big challenge in hearing aids. If not appropriately treated, the feedback limits the maximum possible amplification and may lead to significant sound distortions. In a state-of-the-art hearing aid, an acoustic feedback cancellation (AFC) system is used to compensate...... systems is the biased adaptive filter estimation problem, especially when tonal signals such as music and alarm tones enter the hearing aid microphones. The consequences of this biased estimation might be significant sound distortion or even worse, howling. In principle, unbiased adaptive filter...... estimation can be achieved by adding a probe noise signal to the receiver signal and basing the estimation on the probe noise signal. However, the traditional probe noise approach requires a high-level probe noise signal, which is clearly audible and annoying for the hearing aid user. Hence, this high probe...

  18. Hearing Aids: Expectations and Satisfaction of People with an Intellectual Disability, a Descriptive Pilot Study

    Science.gov (United States)

    Meuwese-Jongejeugd, A.; Verschuure, H.; Evenhuis, H. M.

    2007-01-01

    Background: In spite of an increased risk of hearing impairment in persons with an intellectual disability (ID), rehabilitation with hearing aids often fails. We performed a descriptive pilot study with the following study questions: (1) Do comparable elements as in the general population contribute to expectations of and satisfaction with hearing…

  19. A model of mechanical contacts in hearing aids for uncertainty analysis

    DEFF Research Database (Denmark)

    Creixell Mediante, Ester; Brunskog, Jonas; Jensen, Jakob Søndergaard;

    2015-01-01

    in the hearing aid field, where the small lightweight structures present vibration modes at frequencies within the hearing range. To approach this issue, a model of contacts based on lumped elements is suggested. The joint parameters are the stiffness of a series of spring elements placed along the contact...

  20. Binaural Model-Based Speech Intelligibility Enhancement and Assessment in Hearing Aids

    NARCIS (Netherlands)

    Schlesinger, A.

    2012-01-01

    The enhancement of speech intelligibility in noise is still the main subject in hearing aid research. Based on the advanced results obtained with the hearing glasses, in the present research the speech intelligibility is even further improved by the application of binaural post-filters. The function

  1. Sensitivity to temporal fine structure and hearing-aid outcomes in older adults

    Directory of Open Access Journals (Sweden)

    Elvira ePerez Vallejos

    2014-02-01

    Full Text Available Objective: to investigate the effect of sensitivity to temporal fine structure on subjective measures of hearing aid outcome.Design: Prior to receiving hearing aids, participants completed a test to assess sensitivity to temporal fine structure (TFS, the Glasgow Hearing Aid Benefit Profile (GHABP, and the Speech, Spatial and Qualities of hearing (SSQ-A. Follow-up appointments, comprised the GHABP, the SSQ-B , and the International Outcome Inventory for Hearing Aid Outcomes (IOI-HA.Study sample: 75 adults were recruited from direct referral clinics. Results: Two thirds of participants were found to have good sensitivity to TFS; listeners with good sensitivity to TFS rated their hearing abilities higher at pre-fitting (SSQ-A than those with poor sensitivity to TFS. At follow-up, participants with good sensitivity to TFS showed a small improvement on SSQ-B over listeners with poor sensitivity to TFS. Conclusions: The clinical identification of a patient’s ability to process TFS information at an early stage in the treatment pathway could prove useful in managing expectations about hearing aid outcomes.

  2. Sound Classification in Hearing Aids Inspired by Auditory Scene Analysis

    Directory of Open Access Journals (Sweden)

    Norbert Dillier

    2005-11-01

    Full Text Available A sound classification system for the automatic recognition of the acoustic environment in a hearing aid is discussed. The system distinguishes the four sound classes “clean speech,” “speech in noise,” “noise,” and “music.” A number of features that are inspired by auditory scene analysis are extracted from the sound signal. These features describe amplitude modulations, spectral profile, harmonicity, amplitude onsets, and rhythm. They are evaluated together with different pattern classifiers. Simple classifiers, such as rule-based and minimum-distance classifiers, are compared with more complex approaches, such as Bayes classifier, neural network, and hidden Markov model. Sounds from a large database are employed for both training and testing of the system. The achieved recognition rates are very high except for the class “speech in noise.” Problems arise in the classification of compressed pop music, strongly reverberated speech, and tonal or fluctuating noises.

  3. Validation of a Virtual Sound Environment System for Testing Hearing Aids

    DEFF Research Database (Denmark)

    Cubick, Jens; Dau, Torsten

    2016-01-01

    In the development process of modern hearing aids, test scenarios that reproduce natural acoustic scenes have become increasingly important in recent years for the evaluation of new signal processing algorithms. To achieve high ecological validity, such scenarios should include components like......-correlation coefficients. Overall, the considered VSE system may represent a valuable tool for testing the effects of hearing-aid signal processing on physical and behavioural outcome measures in realistic acoustic environments....

  4. Long-Term Tinnitus Suppression with Linear Octave Frequency Transposition Hearing Aids

    OpenAIRE

    Peltier, Elisabeth; Peltier, Cedric; Tahar, Stephanie; Alliot-Lugaz, Evelyne; Cazals, Yves

    2012-01-01

    Over the last three years of hearing aid dispensing, it was observed that among 74 subjects fitted with a linear octave frequency transposition (LOFT) hearing aid, 60 reported partial or complete tinnitus suppression during day and night, an effect still lasting after several months or years of daily use. We report in more details on 38 subjects from whom we obtained quantified measures of tinnitus suppression through visual analog scaling and several additional psychoacoustic and audiometric...

  5. Using a reflection model for modeling the dynamic feedback path of digital hearing aids

    OpenAIRE

    Ma, Guilin; Gran, Fredrik; Jacobsen, Finn; Agerkvist, Finn T.

    2010-01-01

    Feedback whistling is one of the severe problems with hearing aids, especially in dynamic situations when the users hug, pick up a telephone, etc. This paper investigates the properties of the dynamic feedback paths of digital hearing aids and proposes a model based on a reflection assumption. The model is compared with two existing models: a direct model and an initialization model, using the measured dynamic feedback paths. The comparison shows that the proposed approach is able to model th...

  6. Advantages of Binaural Amplification to Acceptable Noise Level of Directional Hearing Aid Users

    OpenAIRE

    Kim, Ja-Hee; Lee, Jae Hee; Lee, Ho-Ki

    2014-01-01

    Objectives The goal of the present study was to examine whether Acceptable Noise Levels (ANLs) would be lower (greater acceptance of noise) in binaural listening than in monaural listening condition and also whether meaningfulness of background speech noise would affect ANLs for directional microphone hearing aid users. In addition, any relationships between the individual binaural benefits on ANLs and the individuals' demographic information were investigated. Methods Fourteen hearing aid us...

  7. Data mining of audiology patient records: factors influencing the choice of hearing aid type

    OpenAIRE

    Anwar Muhammad N; Oakes Michael P

    2012-01-01

    Abstract Background This paper describes the analysis of a database of over 180,000 patient records, collected from over 23,000 patients, by the hearing aid clinic at James Cook University Hospital in Middlesbrough, UK. These records consist of audiograms (graphs of the faintest sounds audible to the patient at six different pitches), categorical data (such as age, gender, diagnosis and hearing aid type) and brief free text notes made by the technicians. This data is mined to determine which ...

  8. A novel technique of lumbar hernia repair using bone anchor fixation.

    Science.gov (United States)

    Carbonell, A M; Kercher, K W; Sigmon, L; Matthews, B D; Sing, R F; Kneisl, J S; Heniford, B T

    2005-03-01

    Lumbar hernias are difficult to repair due to their proximity to bone and inadequate surrounding tissue to buttress the repair. We analyzed the outcome of patients undergoing a novel retromuscular lumbar hernia repair technique. The repair was performed in ten patients using a polypropylene or polytetrafluoroethylene mesh placed in an extraperitoneal, retromuscular position with at least 5 cm overlap of the hernia defect. The mesh was fixed with circumferential, transfascial, permanent sutures and inferiorly fixed to the iliac crest by suture bone anchors. Five hernias were recurrent, and five were incarcerated; seven were incisional hernias, and three were posttraumatic. Back and abdominal pain was the most common presenting symptom. Mean hernia size was 227 cm(2) (60-504) with a mesh size of 620 cm(2) (224-936). Mean operative time was 181 min (120-269), with a mean blood loss of 128 ml (50-200). Mean length of stay was 5.2 days (2-10), and morphine equivalent requirement was 200 mg (47-460). There were no postoperative complications or deaths. After a mean follow-up of 40 months (3-99) there have been no recurrences. Our sublay repair of lumbar hernias with permanent suture fixation is safe and to date has resulted in no recurrences. Suture bone anchors ensure secure fixation of the mesh to the iliac crest and may eliminate a common area of recurrence.

  9. Open Versus Closed Hearing-Aid Fittings: A Literature Review of Both Fitting Approaches.

    Science.gov (United States)

    Winkler, Alexandra; Latzel, Matthias; Holube, Inga

    2016-02-15

    One of the main issues in hearing-aid fittings is the abnormal perception of the user's own voice as too loud, "boomy," or "hollow." This phenomenon known as the occlusion effect be reduced by large vents in the earmolds or by open-fit hearing aids. This review provides an overview of publications related to open and closed hearing-aid fittings. First, the occlusion effect and its consequences for perception while using hearing aids are described. Then, the advantages and disadvantages of open compared with closed fittings and their impact on the fitting process are addressed. The advantages include less occlusion, improved own-voice perception and sound quality, and increased localization performance. The disadvantages associated with open-fit hearing aids include reduced benefits of directional microphones and noise reduction, as well as less compression and less available gain before feedback. The final part of this review addresses the need for new approaches to combine the advantages of open and closed hearing-aid fittings.

  10. Dual Language versus English-Only Support for Bilingual Children with Hearing Loss Who Use Cochlear Implants and Hearing Aids

    Science.gov (United States)

    Bunta, Ferenc; Douglas, Michael; Dickson, Hanna; Cantu, Amy; Wickesberg, Jennifer; Gifford, René H.

    2016-01-01

    Background: There is a critical need to understand better speech and language development in bilingual children learning two spoken languages who use cochlear implants (CIs) and hearing aids (HAs). The paucity of knowledge in this area poses a significant barrier to providing maximal communicative outcomes to a growing number of children who have…

  11. Self-reported outcomes of aural rehabilitation for adult hearing aid users in a developing South African context

    Directory of Open Access Journals (Sweden)

    Elaine Pienaar

    2010-12-01

    Full Text Available Hearing impairment has far reaching consequences for affected individuals, in terms of quality of life indicators. In a developing South African context the hearing impaired population is faced with limited aural rehabilitation services. This study evaluated self-reported outcomes of aural rehabilitation in a group of adults in the public healthcare sector with a standardized outcomes measurement tool (IOI-HA. Sixty-one respondents participated (44% males; 56% females, with a mean age of 69.7 years. Results revealed that the majority of respondents experienced favourable outcomes in all domains of the inventory comprising of: daily use of hearing aids, benefits provided by hearing aids, residual activity limitation, satisfaction with hearing aids, residual participation restriction, impact of hearing difficulties on others, and changes in quality of life. Statistically significant relationships were obtained between the daily use of hearing aids, the degree of hearing loss, and the type of hearing aids fitted, as well as the benefits received from hearing aids in difficult listening environments (p < 0.05. Despite challenges of developing contexts, the mean scores distribution compared positively to similar reports from developed countries. Outcomes of improved quality of life emphasize the importance of providing affordable hearing aids and services to all hearing impaired individuals in South Africa.

  12. Evaluation of a clinical auditory profile in hearing-aid candidates

    DEFF Research Database (Denmark)

    Thorup, Nicoline; Santurette, Sébastien; Jørgensen, Søren;

    2015-01-01

    Hearing-impaired (HI) listeners often complain about communicating in the presence of background noise, although audibility may be restored by a hearing-aid (HA). The audiogram typically forms the basis for HA fitting, such that people with similar audiograms are given the same prescription...... and temporal resolution, binaural hearing, speech intelligibility in stationary and fluctuating noise, and a working-memory test. Six weeks after HA fitting they answered the International Outcome Inventory – Hearing Aid evaluation. The HI group was homogeneous based on the audiogram, but only one test...... was correlated to pure-tone hearing thresholds. Moreover, HI listeners who took the least advantage from fluctuations in background noise in terms of speech intelligibility experienced greater HA benefit. Further analysis of whether specific outcomes are directly related to speech intelligibility in fluctuating...

  13. Digital signal processing (DSP) applications for multiband loudness correction digital hearing aids and cochlear implants.

    Science.gov (United States)

    Dillier, N; Frölich, T; Kompis, M; Bögli, H; Lai, W K

    1993-01-01

    Single-chip digital signal processors (DSPs) allow the flexible implementation of a large variety of speech analysis, synthesis, and processing algorithms for the hearing impaired. A series of experiments was carried out to optimize parameters of the adaptive beamformer noise reduction algorithm and to evaluate its performance in realistic environments with normal-hearing and hearing-impaired subjects. An experimental DSP system has been used to implement a multiband loudness correction (MLC) algorithm for a digital hearing aid. Speech tests in quiet and noise with 13 users of conventional hearing aids demonstrated significant improvements in discrimination scores with the MLC algorithm. Various speech coding strategies for cochlear implants were implemented in real time on a DSP laboratory speech processor. Improved speech discrimination performance was achieved with high-rate stimulation. Hybrid strategies incorporating speech feature detectors and complex decision algorithms are currently being investigated. PMID:8263833

  14. Signal Processing in High-End Hearing Aids: State of the Art, Challenges, and Future Trends

    Directory of Open Access Journals (Sweden)

    U. Rass

    2005-11-01

    Full Text Available The development of hearing aids incorporates two aspects, namely, the audiological and the technical point of view. The former focuses on items like the recruitment phenomenon, the speech intelligibility of hearing-impaired persons, or just on the question of hearing comfort. Concerning these subjects, different algorithms intending to improve the hearing ability are presented in this paper. These are automatic gain controls, directional microphones, and noise reduction algorithms. Besides the audiological point of view, there are several purely technical problems which have to be solved. An important one is the acoustic feedback. Another instance is the proper automatic control of all hearing aid components by means of a classification unit. In addition to an overview of state-of-the-art algorithms, this paper focuses on future trends.

  15. Real-Time Implementation of an Efficient Speech Enhancement Algorithm for Digital Hearing Aids

    Institute of Scientific and Technical Information of China (English)

    GAO Jie; ZHANG Hui; HU Guangshu

    2006-01-01

    In order to remove background noise and improve the quality of speech for digital hearing aids, a single-channel speech enhancement algorithm is proposed. The algorithm is implemented and assessed on a digital hearing aid platform based on the TI DSP TMS320VC5502 chip. Assuming that background noise is stationary or varies slowly, an energy-based voice activity detection algorithm is adopted by adaptively tracking the minima and maxima of the power envelope in noisy speech. The target speech is then enhanced by using a Wiener filter, on the basis of a short-term power spectral estimation. To deal with the distracting musical noise of the processed speech, phase randomization, along with adjacent spectral averaging, is adopted. Objective measures and an informal hearing test both show an improved performance as well as obvious attenuation of residual noise. The low power consumption and high efficiency render the whole algorithm very applicable for use in digital hearing aids.

  16. Evaluation of user satisfaction of hearing aids (HA in the Amazon

    Directory of Open Access Journals (Sweden)

    Arakawa, Aline Megumi

    2010-03-01

    Full Text Available Introduction: The main function of human hearing is enabling oral communication. In this sense, hearing loss impairs severely communication skills and social relationships of individuals. Therefore, the project "USP in Rondônia" of FOB/USP conducts expeditions travelling to the municipality from Monte Negro/RO allowing the promotion of hearing health. Objective: To assess the level of satisfaction user with hearing aids (HA. Method: Was accomplished a prospective study of 18 individuals with hearing loss fitted with hearing aids in the Clinic of Oral and Fono Audiological Health from Monte Negro/RO. For the evaluation, we used the questionnaire for self-assessment IOI-HA (International Outcome Inventory for Hearing Aids. Results: Concerning the seven domains assessed, it was verified that the average referring to the use was 4.2, the benefit was 3.9, the limiting of residual activity was 3.7; the satisfaction was 4.4, the restriction of participation of residual activity was 3.8, the impact on others was 4.3 and 3.9 for the quality of life. Respecting the factors one and two, it was applied the statistical test t-Student founding no statistically significant difference. However, the analysis of the score relative to factors one and two showed good results as the individual's interaction with his hearing aid and with their environment, respectively. Conclusion: With this study, we can demonstrate the high grade of satisfaction from the use of hearing aids presented by the majority of the sample collected in all domains analyzed.

  17. Evaluation of the Hearing Aid Rehabilitation Questionnaire in Dutch: examination of its psychometric properties and potential use as a screening instrument

    Directory of Open Access Journals (Sweden)

    Michelene N. Chenault

    2013-10-01

    Full Text Available Items pertaining to hearing and hearing aids from the Hearing Aid Rehabilitation Questionnaire were applied to a heterogeneous sample of Dutch patients aged 55 years and more to evaluate their potential use in hearing screening. Subjects aged 55+ were recruited from a large general practitioners practice to participate. Three groups were formed: a group of 63 persons with a hearing aid, a group of 64 without a hearing aid but with sufficient hearing impairment to qualify for hearing aid reimbursement, and a group of 85 non-hearing impaired persons. Factor and reliability analyses revealed a structure with two scales regarding hearing, namely functionality and social hearing and three scales pertaining to hearing aids, namely hearing aid stigma, pressure to be assessed and not wanting a hearing aid. Scale validity was assessed with pure tone averages over the frequencies 1, 2 and 4 kHz and with a visual analogue scale for subjective hearing. The derived scales can be applied reliably in audiological assessment in an adult hearing screen setting to detect experienced hearing problems as well as attitudes related to hearing and hearing aids.

  18. Decision support system for the selection of an ITE or a BTE hearing aid

    OpenAIRE

    Anwar, Naveed; Oakes, Michael

    2013-01-01

    The purpose of this research is to mine a large set of heterogeneous audiology data to create a decision support system (DSS) to choose between two hearing aid types (ITE and BTE aid). This research is based on the data analysis of audiology data using various statistical and data mining techniques. It uses the data of a large NHS (National Health Services, UK) facility. It uses 180,000 records (covering more than 23,000 different patients) from a hearing aid clinic. The developed system u...

  19. Pilot Study to Evaluate Hearing Aid Service Delivery Model and Measure Benefit Using Self-Report Outcome Measures Using Community Hearing Workers in a Developing Country

    OpenAIRE

    Emerson, Lingamdenne Paul; Job, Anand; Abraham, Vinod

    2013-01-01

    Hearing loss is a major handicap in developing countries with paucity of trained audiologists and limited resources. In this pilot study trained community health workers were used to provide comprehensive hearing aid services in the community. One hundred and eleven patients were fitted with semi-digital hearing aid and were evaluated over a period of six months. They were assessed using self-report outcome measure APHAB. Results show that trained CHWs are effective in detecting disabling hea...

  20. Rethinking Sound : Computer-assisted reading intervention with a phonics approach for deaf and hard of hearing children using cochlear implants or hearing aids

    OpenAIRE

    Nakeva von Mentzer, Cecilia

    2014-01-01

    In the present thesis, computer-assisted reading intervention with a phonics approach was examined in deaf and hard of hearing children (DHH) aged 5, 6 or 7 years old using cochlear implants, hearing aids or a combination of both. Children with normal hearing (NH), matched for non-verbal intelligence and age, served as a reference group. Deaf and hard of hearing children constitute a heterogenetic population regarding cognitive and academic achievement. Many of them do not reach age appropria...

  1. A Simplified Technique for Orientation of a Bone Anchored Auricular Prostheses: a Clinical Report

    Directory of Open Access Journals (Sweden)

    Hussein G. El Charkawi

    2012-08-01

    Full Text Available Background: A simple technique was presented in this clinical report for orientation of a bone anchored auricular prosthesis.Methods: The proposed technique includes drawing the intact ear on a transparent celluloid paper or radiographic film and flipping it to the opposite side and relating it to the fixed anatomical features on the face of patient.Results: The drawing, by this way provides a simple and easy way to duplicate and transfer the exact size and position of the intact ear to the defect side.Conclusions: This technique provides a simple, safe, inexpensive and time saving yet, an accurate and effective surgical template that orients the craniofacial implants to the confines of the definitive auricular prosthesis. It is indicated for restoration of single missing external ear either in aplasia, injuries and total resection.

  2. Dynamic Relation Between Working Memory Capacity and Speech Recognition in Noise During the First 6 Months of Hearing Aid Use

    Directory of Open Access Journals (Sweden)

    Elaine H. N. Ng

    2014-11-01

    Full Text Available The present study aimed to investigate the changing relationship between aided speech recognition and cognitive function during the first 6 months of hearing aid use. Twenty-seven first-time hearing aid users with symmetrical mild to moderate sensorineural hearing loss were recruited. Aided speech recognition thresholds in noise were obtained in the hearing aid fitting session as well as at 3 and 6 months postfitting. Cognitive abilities were assessed using a reading span test, which is a measure of working memory capacity, and a cognitive test battery. Results showed a significant correlation between reading span and speech reception threshold during the hearing aid fitting session. This relation was significantly weakened over the first 6 months of hearing aid use. Multiple regression analysis showed that reading span was the main predictor of speech recognition thresholds in noise when hearing aids were first fitted, but that the pure-tone average hearing threshold was the main predictor 6 months later. One way of explaining the results is that working memory capacity plays a more important role in speech recognition in noise initially rather than after 6 months of use. We propose that new hearing aid users engage working memory capacity to recognize unfamiliar processed speech signals because the phonological form of these signals cannot be automatically matched to phonological representations in long-term memory. As familiarization proceeds, the mismatch effect is alleviated, and the engagement of working memory capacity is reduced.

  3. Audiological Results and Quality of Life of Sophono Alpha 2 Transcutaneous Bone-Anchored Implant Users in Single-Sided Deafness.

    Science.gov (United States)

    Bernardeschi, Daniele; Russo, Francesca Yoshie; Nguyen, Yann; Vicault, Eric; Flament, Jonathan; Bernou, Deborah; Sterkers, Olivier; Mosnier, Isabelle

    2016-01-01

    Single-sided deafness (SSD) represents one of the most difficult audiological conditions to rehabilitate. The aim of this prospective study was to evaluate the audiological benefits and quality of life of patients affected by SSD who had previously been users of the Alpha 1® when upgrading them to the Sophono Alpha 2® external processor (Boulder, Colo., USA). Nine patients were included in the study. They underwent physical examination, free-field speech audiometry at 40 and 60 dB, a hearing-in-noise test (Hirsch's test and the squelch test), the Glasgow Benefit Inventory (GBI) questionnaire, and a specific questionnaire on patient satisfaction with Alpha 1. Afterwards, the Alpha 2 external processor was delivered to all patients, and the above-mentioned protocol was repeated after 1 month with the Alpha 2. A statistically significant improvement was found in the speech discrimination score at 40 dB and in the squelch test when using the Alpha 2 external processor compared to the Alpha 1. Alpha 2 had a good clinical tolerance and gave similar results in the specific questionnaire and the GBI to Alpha 1. In conclusion, the new Alpha 2 external processor represents a safe and effective device for the rehabilitation of SSD, and there is an audiological benefit to upgrading to the Alpha 2 external processor for patients who had previously been users of the Alpha 1. The improvement in quality of life is similar to that with other bone-anchored hearing devices. PMID:27159973

  4. Effects of Hearing Aid Amplification on Robust Neural Coding of Speech

    OpenAIRE

    Boley, Jonathan Daniel

    2013-01-01

    Hearing aids are able to restore some hearing abilities for people with auditory impairments, but background noise remains a significant problem. Unfortunately, we know very little about how speech is encoded in the auditory system, particularly in impaired systems with prosthetic amplifiers. There is growing evidence that relative timing in the neural signals (known as spatiotemporal coding) is important for speech perception, but there is little research that relates spatiotemporal coding a...

  5. Bone-conduction hearing aids in an elderly population: complications and quality of life assessment.

    Science.gov (United States)

    Carr, Simon D; Moraleda, Javier; Baldwin, Alice; Ray, Jaydip

    2016-03-01

    To determine whether an elderly population with hearing impairment can be adequately rehabilitated with a bone-conduction hearing aid and whether the putative relationship between the elderly and an increased complication rate is justified. The study design was a retrospective case note review with a postal and telephone questionnaire, which was carried out in a tertiary centre. All patients aged 60 or over underwent implantation with a bone-conduction aid between 2009 and 2013 for conductive, SSD or mixed hearing loss. Outcome measures were complication rates and quality of life assessment using the Glasgow Benefit Inventory. The influence of patient and surgical factors on the complication rate was assessed. Fifty-one patients were implanted. Mean age was 67 years (range 60-89 years). The mean benefit, satisfaction and global GBI scores were 70 % (range 0-100 %), 70 % (0-100 %) and 82 % (83-100 %), respectively. The residual disability was 18 % (0-25 %). The adverse skin reaction rate was 16 % and the fixture loss rate was 2 %. There was a demonstrable increase in the complication rate with the dermatome (45 %; 5 patients) compared to the Sheffield 'S' (13 %; 2 patients) or linear incision techniques (29 %; 7 patients). The bone-conduction hearing aids are ideal method of hearing rehabilitation in the elderly for all forms of hearing loss. It provides significant benefit with no increased complication rate, which is imperative if social isolation is to be avoided and cognition preserved in this growing elderly population. PMID:25736468

  6. The Phonics Approach in Swedish Children using Cochlear Implants or Hearing Aids: Inspecting Phonological Gain

    OpenAIRE

    Nakeva von Mentzer, Cecilia; Lyxell, Björn; Sahlén, Birgitta; Dahlström, Örjan; Lindgren, Magnus; Ors, Marianne; Kallioinen, Petter; Uhlén, Inger

    2014-01-01

    The present study investigated cognitive abilities (i.e. Phonological Processing Skills (PhPS), lexical access, complex and visual Working Memory (WM), and letter knowledge) in Deaf and Hard of Hearing children (DHH) 5, 6 and 7 years of age using cochlear implants or hearing aids. Children with Normal Hearing (NH) served as a reference group. All children took part of a computer-assisted intervention with a phonics approach for 4 weeks aimed to support PhPS. The first aim of the study was to ...

  7. ADAPTIVE EXPERT SYSTEM FOR CALCULATION OF REAL EAR INSERTION GAIN FOR DIGITAL HEARING AID

    Directory of Open Access Journals (Sweden)

    Sadagopan Rajkumar

    2013-01-01

    Full Text Available The various gain calculating formulae for digital hearing aids is analyzed for different subjects to find out suitable adaptive gain formula for most successful gain recommendations. The object of the work is to design and develop an adaptive expert system, which could be effectively used to perform screening tests to identify the level of hearing impairment and recommend suitable gain suggestions for frequency bands of digital hearing aid. Initially, the design requirements for a digital hearing aid are being arrived by using the standard gain formulae followed such as National Acoustic Laboratory Revised (NAL-R and Prescription of Gain Output (POGO II. The test is carried with 272 subjects aging from 25 to 72 and 221 male and 51 female. Of which gain is recommended for 127 subjects with the standard gain formula. When the recommendations are verified for satisfaction among the hearing aid users only 28 received satisfaction with NAL-R and 25 received satisfactions with POGO II. Remaining subjects received satisfaction only after fine tuning the gain value and recommended gains are stored in adaptive expert system. Subsequently, based on the suggested value of gains and additional data from expert audiologists, gain formula could be made distinct for every language.

  8. Contribution of a Contralateral Hearing Aid to Perception of Consonant Voicing, Intonation, and Emotional State in Adult Cochlear Implantees

    Science.gov (United States)

    Most, Tova; Gaon-Sivan, Gal; Shpak, Talma; Luntz, Michal

    2012-01-01

    Binaural hearing in cochlear implant (CI) users can be achieved either by bilateral implantation or bimodally with a contralateral hearing aid (HA). Binaural-bimodal hearing has the advantage of complementing the high-frequency electric information from the CI by low-frequency acoustic information from the HA. We examined the contribution of a…

  9. Auditory, Visual, and Auditory-Visual Speech Perception by Individuals with Cochlear Implants versus Individuals with Hearing Aids

    Science.gov (United States)

    Most, Tova; Rothem, Hilla; Luntz, Michal

    2009-01-01

    The researchers evaluated the contribution of cochlear implants (CIs) to speech perception by a sample of prelingually deaf individuals implanted after age 8 years. This group was compared with a group with profound hearing impairment (HA-P), and with a group with severe hearing impairment (HA-S), both of which used hearing aids. Words and…

  10. Maximum likelihood approach to “informed” Sound Source Localization for Hearing Aid applications

    DEFF Research Database (Denmark)

    Farmani, Mojtaba; Pedersen, Michael Syskind; Tan, Zheng-Hua;

    2015-01-01

    Most state-of-the-art Sound Source Localization (SSL) algorithms have been proposed for applications which are "uninformed'' about the target sound content; however, utilizing a wireless microphone worn by a target talker, enables recent Hearing Aid Systems (HASs) to access to an almost noise......'' SSL algorithms which use binaural microphones for localization, MLSSL performs better using signals of one or more microphones placed on just one ear, thereby reducing the wireless transmission overhead of binaural hearing aids. More specifically, when the target location confined to the front...

  11. Does the acceptable noise level (ANL) predict hearing-aid use?

    DEFF Research Database (Denmark)

    Olsen, Steen Østergaard; Brännström, K Jonas

    2014-01-01

    OBJECTIVE: It has been suggested that individuals have an inherent acceptance of noise in the presence of speech, and that different acceptance of noise results in different hearing-aid (HA) use. The acceptable noise level (ANL) has been proposed for measurement of this property. It has been...... claimed that the ANL magnitude can predict hearing-aid use patterns. Many papers have been published reporting on different aspects of ANL, but none have challenged the predictive power of ANL. The purpose of this study was to discuss whether ANL can predict HA use and how more reliable ANL results can...

  12. Maximum likelihood based multi-channel isotropic reverberation reduction for hearing aids

    DEFF Research Database (Denmark)

    Kuklasiński, Adam; Doclo, Simon; Jensen, Søren Holdt;

    2014-01-01

    We propose a multi-channel Wiener filter for speech dereverberation in hearing aids. The proposed algorithm uses joint maximum likelihood estimation of the speech and late reverberation spectral variances, under the assumption that the late reverberant sound field is cylindrically isotropic....... The dereverberation performance of the algorithm is evaluated using computer simulations with realistic hearing aid microphone signals including head-related effects. The algorithm is shown to work well with signals reverberated both by synthetic and by measured room impulse responses, achieving improvements...

  13. Adaptive Feedback Cancellation With Band-Limited LPC Vocoder in Digital Hearing Aids

    DEFF Research Database (Denmark)

    Ma, Guilin; Gran, Fredrik; Jacobsen, Finn;

    2011-01-01

    Feedback oscillation is one of the major issues with hearing aids. An effective way of feedback suppression is adaptive feedback cancellation, which uses an adaptive filter to estimate the feedback path. However, when the external input signal is correlated with the receiver input signal......, the estimate of the feedback path is biased. This so-called “bias problem” results in a large modeling error and a cancellation of the desired signal. This paper proposes a band-limited linear predictive coding based approach to reduce the bias. The idea is to replace the hearing-aid output with a synthesized...

  14. An Efficient Adaptive Feedback cancellation using by Independent component analysis for hearing aids.

    Science.gov (United States)

    Ji, Y S; Jung, S Y; Kwon, S Y; Kim, I Y; Kim, Sun; Lee, S M

    2005-01-01

    In this paper, we proposed a feedback cancellation algorithm based on independent component analysis (ICA) for digital hearing aids. In conventional adaptive feedback cancelling systems, the normalized least mean squares (NLMS) algorithm used to reduce acoustic feedback in which hearing aids occurs, generally at high gains. But primary input signal depend on the acoustic feedback signal in higher-order statistics, proposed algorithm was better acoustic feedback cancelling performance than the conventional NLMS algorithm when the input signal has a Laplacian distribution with high-order processing in real-time simulation of TMS320C 6711 DSK. PMID:17282799

  15. System-Level Optimization of a DAC for Hearing-Aid Audio Class D Output Stage

    DEFF Research Database (Denmark)

    Pracný, Peter; Jørgensen, Ivan Harald Holger; Bruun, Erik

    2013-01-01

    This paper deals with system-level optimization of a digital-to-analog converter (DAC) for hearing-aid audio Class D output stage. We discuss the ΣΔ modulator system-level design parameters – the order, the oversampling ratio (OSR) and the number of bits in the quantizer. We show that combining...... by comparing two ΣΔ modulator designs. The proposed optimization has impact on the whole hearing-aid audio back-end system including less hardware in the interpolation filter and half the switching rate in the digital-pulse-width-modulation (DPWM) block and Class D output stage...

  16. Biomimetic direction of arrival estimation for resolving front-back confusions in hearing aids

    OpenAIRE

    Archer-Boyd, Alan W.; Whitmer, William M.; Brimijoin, W. Owen; Soraghan, John J.

    2015-01-01

    Sound sources at the same angle in front or behind a two-microphone array (e.g., bilateral hearing aids) produce the same time delay and two estimates for the direction of arrival: A front-back confusion. The auditory system can resolve this issue using head movements. To resolve front-back confusion for hearing-aid algorithms, head movement was measured using an inertial sensor. Successive time-delay estimates between the microphones are shifted clockwise and counterclockwise by the head mov...

  17. Decision support system to help choose between an ITE or a BTE hearing aid

    OpenAIRE

    Anwar, Naveed; Oakes, Michael

    2011-01-01

    A decision support system (DSS) is used for analysing a situation and making decisions. The goal of this research is to mine a large set of heterogeneous audiology data and create a DSS to help audiology technicians to choose between an ITE or BTE hearing aid. Although, in many cases such a choice is clear cut, but at other times this system could be used as a second opinion to predict the hearing aid type. A number of data mining techniques, such as clustering of audiograms, association anal...

  18. Cortical Auditory Evoked Potentials Reveal Changes in Audibility with Nonlinear Frequency Compression in Hearing Aids for Children: Clinical Implications.

    Science.gov (United States)

    Ching, Teresa Y C; Zhang, Vicky W; Hou, Sanna; Van Buynder, Patricia

    2016-02-01

    Hearing loss in children is detected soon after birth via newborn hearing screening. Procedures for early hearing assessment and hearing aid fitting are well established, but methods for evaluating the effectiveness of amplification for young children are limited. One promising approach to validating hearing aid fittings is to measure cortical auditory evoked potentials (CAEPs). This article provides first a brief overview of reports on the use of CAEPs for evaluation of hearing aids. Second, a study that measured CAEPs to evaluate nonlinear frequency compression (NLFC) in hearing aids for 27 children (between 6.1 and 16.8 years old) who have mild to severe hearing loss is reported. There was no significant difference in aided sensation level or the detection of CAEPs for /g/ between NLFC on and off conditions. The activation of NLFC was associated with a significant increase in aided sensation levels for /t/ and /s/. It also was associated with an increase in detection of CAEPs for /t/ and /s/. The findings support the use of CAEPs for checking audibility provided by hearing aids. Based on the current data, a clinical protocol for using CAEPs to validate audibility with amplification is presented. PMID:27587920

  19. Hearing aid fitting results in a case of a patient with auditory neuropathy

    Directory of Open Access Journals (Sweden)

    Dell´Aringa, Ana Helena Bannwart

    2009-03-01

    Full Text Available Introduction: The Auditory Neuropathy is described recently as a hearing loss characterized by the preservation of outer hair cells and absence of auditory brainstem responses. Objective: To present a case report of hearing aid fitting in a patient with Auditory Neuropathy. Case Report: S.A.P., male, 32 years old, sought the Otorhinolaryngology Service after five years of Guillain-Barré syndrome, complaining of progressive and bilateral tinnitus auditory loss in both ears. The audiological evaluation resulted in: severe sensorioneural hearing deficiency with bilateral irregular configuration; speech recognition rate of 0% and speech detection rate in 35dB in both ears; type A tympanometric curve and absent ipsilateral, bilateral and contralateral reflexes; absence of waves and presence of cochlear microphonics in both ears in the auditory evoked potential and present bilateral distortion product-evoked otoacoustic emissions. The speech perception test was performed with polysyllabic words and lip reading, and presented 44% of hit with hearing aid and 12% without it. Final Comments: Despite the differences in the process of hearing aid habilitation and rehabilitation, we conclude that sound amplification brought benefits to the patient with auditory neuropathy.

  20. Auditory-model based assessment of the effects of hearing loss and hearing-aid compression on spectral and temporal resolution

    DEFF Research Database (Denmark)

    Kowalewski, Borys; MacDonald, Ewen; Strelcyk, Olaf;

    2016-01-01

    . However, due to the complexity of speech and its robustness to spectral and temporal alterations, the effects of DRC on speech perception have been mixed and controversial. The goal of the present study was to obtain a clearer understanding of the interplay between hearing loss and DRC by means......Most state-of-the-art hearing aids apply multi-channel dynamic-range compression (DRC). Such designs have the potential to emulate, at least to some degree, the processing that takes place in the healthy auditory system. One way to assess hearing-aid performance is to measure speech intelligibility....... Outcomes were simulated using the auditory processing model of Jepsen et al. (2008) with the front end modified to include effects of hearing impairment and DRC. The results were compared to experimental data from normal-hearing and hearing-impaired listeners....

  1. Rate-constrained source separation for speech enhancement in wireless-communicated binaural hearing aids

    Science.gov (United States)

    Ayllón, David; Gil-Pita, Roberto; Rosa-Zurera, Manuel

    2013-12-01

    A recent trend in hearing aids is the connection of the left and right devices to collaborate between them. Binaural systems can provide natural binaural hearing and support the improvement of speech intelligibility in noise, but they require data transmission between both devices, which increases the power consumption. This paper presents a novel sound source separation algorithm for binaural speech enhancement based on supervised machine learning and time-frequency masking. The system is designed considering the power restrictions in hearing aids, constraining both the computational cost of the algorithm and the transmission bit rate. The transmission schema is optimized using a tailored evolutionary algorithm that assigns a different number of bits to each frequency band. The proposed algorithm requires less than 10% of the available computational resources for signal processing and obtains good separation performance using bit rates lower than 64 kbps.

  2. Binaural Integrated Active Noise Control and Noise Reduction in Hearing Aids

    DEFF Research Database (Denmark)

    Serizel, Romain; Moonen, Marc; Wouters, Jan;

    2013-01-01

    This paper presents a binaural approach to integrated active noise control and noise reduction in hearing aids and aims at demonstrating that a binaural setup indeed provides significant advantages in terms of the number of noise sources that can be compensated for and in terms of the causality...

  3. Quality investigation of miniaturized Moulded Interconnect Devices (MIDs) for hearing aid applications

    DEFF Research Database (Denmark)

    Islam, Aminul; Hansen, Hans Nørgaard; Giannekas, Nikolaos

    2015-01-01

    of positioning accuracies, dimensional fidelity and surface topography of the metal tracks. The paper proposes a novel method for the corrosion protection of the MID metal surface. The results obtained from the tests demonstrate the feasibility of the use of MIDs in the hearing aid application and an efficient...

  4. Informed TDoA-based Direction of Arrival Estimation for Hearing Aid Applications

    DEFF Research Database (Denmark)

    Farmani, Mojtaba; Pedersen, Michael Syskind; Tan, Zheng-Hua;

    2015-01-01

    This paper deals with estimation of the target sound Direction of Arrival (DoA) or a Hearing Aid System (HAS) which can connect to a wireless microphone worn by target talker. In this setup, the HAS is "informed" about the almost noise-free content of the target sound via the wireless microphone...

  5. Evaluation of State-of-the-Art Acoustic Feedback Cancellation Systems for Hearing Aids

    DEFF Research Database (Denmark)

    Guo, Meng; Jensen, Søren Holdt; Jensen, Jesper

    2013-01-01

    This research evaluates four state-of-the-art acoustic feedback cancellation systems in hearing aids in terms of the cancellation performance, sound quality degradation, and computational complexity. The authors compared a traditional full-band system to a system with a prediction error method...

  6. A hyper elasticity method for interactive virtual design of hearing aids

    DEFF Research Database (Denmark)

    Darkner, Sune; Erleben, Kenny

    2011-01-01

    by insertion of hearing aid domes into the ear canal. We validate the method for tetrahedral meshes with linear shape functions with an Ogden material model by comparing simulations to deformations of real material. We illustrate the use of other shape functions and models using uniform cubic B...

  7. Reading and Spelling Abilities of Deaf Adolescents with Cochlear Implants and Hearing Aids

    Science.gov (United States)

    Harris, Margaret; Terlektsi, Emmanouela

    2011-01-01

    A total of 86 deaf children aged between 12 and 16 years were recruited from schools for the deaf, specialist units attached to a school, and mainstream schools. Approximately one-third used hearing aids, one-third had received a cochlear implant before 42 months, and one-third had been implanted later. The 3 subgroups were matched for age and…

  8. A Flexible Speech Distortion Weighted Multi-Channel Wiener Filter for Noise Reduction in Hearing Aids

    DEFF Research Database (Denmark)

    Ngo, K.; Moonen, M.; Jensen, Søren Holdt;

    2011-01-01

    -only and a speech+noise state, a solution is introduced that allows for a more flexible trade-off between noise reduction and speech distortion. Experimental results with hearing aid scenarios demonstrate that the proposed SDW-MWF incorporating the flexible weighting factor improves the signal...

  9. Perception-Based Personalization of Hearing Aids Using Gaussian Processes and Active Learning

    DEFF Research Database (Denmark)

    Nielsen, Jens Brehm; Nielsen, Jakob; Larsen, Jan

    2015-01-01

    —equivalent to 5-10 min—is sufficient for personalization of up to four hearing-aid parameters. A setting obtained by the system was significantly preferred by the subject over the initial fitting, and the obtained setting could be reproduced with reasonable precision. The system may have potential for clinical...

  10. Theory-of-Mind Development in Oral Deaf Children with Cochlear Implants or Conventional Hearing Aids

    Science.gov (United States)

    Peterson, Candida C.

    2004-01-01

    Background: In the context of the established finding that theory-of-mind (ToM) growth is seriously delayed in late-signing deaf children, and some evidence of equivalent delays in those learning speech with conventional hearing aids, this study's novel contribution was to explore ToM development in deaf children with cochlear implants. Implants…

  11. Extracting the invariant model from the feedback paths of digital hearing aids

    DEFF Research Database (Denmark)

    Ma, Guilin; Gran, Fredrik; Jacobsen, Finn;

    2011-01-01

    Feedback whistling is a severe problem with hearing aids. A typical acoustical feedback path represents a wave propagation path from the receiver to the microphone and includes many complicated effects among which some are invariant or nearly invariant for all users and in all acoustical environm...

  12. A Combined Feedback and Noise Cancellation Algorithm for Binaural Hearing Aids

    Directory of Open Access Journals (Sweden)

    LEE, H.-W.

    2011-08-01

    Full Text Available This paper proposes an adaptive algorithm for the combined acoustic feedback and noise cancellation in the binaural hearing aids. The proposed algorithm is based on dual microphones for feedback cancellation and the beamforming method for noise cancellation. The coefficients of feedback canceller are updated after subtracting the speech signal from the input signal by dual microphones. And the noise canceller reduces the noise signal in the residual signal excluding the speech by the beamforming method. Firstly, the feedback canceller operates to cancel the feedback signal in the microphone signal, and then the noise canceller operates to reduce the noise in the residual signal. Also, to assure the stable convergence of binaural hearing aids in the training mode, the coefficients of the left hearing aid are firstly updated, then the coefficients of the right hearing aid are updated. In the normal mode, the feedback and the noise canceller are operated without updating coefficients except an unstable case. To verify performances of the proposed algorithm, we analyzed its convergence behavior and simulated for real speech. From the results of simulations, it was proved that we can advance 14.43dB SFR(speech-to-feedback ratio on average in the feedback canceller, 10.19dB SNR(speech-to-noise ratio improvement on average in the noise canceller, in the case of applying the proposed algorithm.

  13. 47 CFR 20.19 - Hearing aid-compatible mobile handsets.

    Science.gov (United States)

    2010-10-01

    ...; definitions. (1) The hearing aid compatibility requirements of this section apply to providers of digital CMRS..., consistent with its own marketing practices. However, if a manufacturer assigns different model device... models for purposes of this section. (iii) Service provider refers to a provider of digital CMRS to...

  14. 76 FR 2625 - Comment Sought on 2010 Review of Hearing Aid Compatibility Regulations

    Science.gov (United States)

    2011-01-14

    ... Electronic Filing of Documents in Rulemaking Proceedings, 63 FR 24121 (1998). Electronic Filers: Comments may... FR 54508 and 75 FR 54546 (Sept. 8, 2010), the ] Commission reiterated its intention, first stated in... create special issues for hearing aid compatibility? Consumers are increasingly using Bluetooth and...

  15. Filtering to match hearing aid insertion gain to individual ear acoustics.

    Science.gov (United States)

    Bell, Steven L

    2009-09-01

    When hearing aid gain is prescribed by software, gain is calculated based on the average acoustics for the age of patient, gender, mold type, and so on. The acoustics of the individual's ear often vary from the average values, so there will be a mismatch between the prescribed gain and the real-ear gain. Real-ear measurement can be used to verify the gain and adjust it to meet targets, but the quality of the match will be limited by the number of channels and the flexibility of the hearing aid. A potential way to improve this process is to generate a filter that compensates for variations in real-ear insertion gain due to individual ear acoustics. Such a filter could be included in the processing path of a digital hearing aid. This article describes how such a filter can be generated using the windowing method, and the principle is demonstrated in a real ear. The approach requires communication between the real-ear measurement and hearing aid programming software. A finite impulse response filter with group delay just over 2 ms matched insertion gain to target values within the acceptable tolerance defined by British Society of Audiology guidelines. PMID:19713209

  16. Use of Differential Reinforcement to Increase Hearing Aid Compliance: A Preliminary Investigation

    Science.gov (United States)

    Bass-Ringdahl, Sandie M.; Ringdahl, Joel E.; Boelter, Eric W.

    2010-01-01

    Compliance with hearing aid use can be difficult to achieve with children. This difficulty can be increased when a child presents with other disabilities, such as developmental delays. Behavioral treatments, including differential reinforcement, might be one strategy for increasing compliance by these children. In the clinical scenario discussed,…

  17. Load applied on bone-anchored transfemoral prosthesis: Characterization of a prosthesis—A pilot study

    Directory of Open Access Journals (Sweden)

    Laurent Frossard, PhD

    2013-08-01

    Full Text Available The objectives of this study were to (1 record the inner-prosthesis loading during activities of daily living (ADLs, (2 present a set of variables comparing loading data, and (3 provide an example of characterization of two prostheses. The load was measured at 200 Hz using a multi-axial transducer mounted between the residuum and the knee of an individual with unilateral transfemoral amputation fitted with a bone-anchored prosthesis. The load was measured while using two different prosthetic knees, mechanical (PRO1 and microprocessor-controlled (PRO2, during six ADLs. The characteri-zation of the prostheses was achieved using a set of variables split into four categories, including temporal characteristics, maximum loading, loading slopes, and impulse. Approximately 360 gait cycles were analyzed for each prosthesis. PRO1 showed a cadence improved by 19% and 7%, a maximum force on the long axis reduced by 11% and 19%, and an impulse reduced by 32% and 15% during descent of incline and stairs compared with PRO2, respectively. This work confirmed that the proposed apparatus and characterization can reveal how changes of prosthetic components are translated into inner-prosthetic loading.

  18. Selecting Appropriate Tests to Assess the Benefits of Bilateral Amplification With Hearing Aids.

    Science.gov (United States)

    van Schoonhoven, Jelmer; Schulte, Michael; Boymans, Monique; Wagener, Kirsten C; Dreschler, Wouter A; Kollmeier, Birger

    2016-01-01

    The aim of this study was to investigate the effect of bilateral hearing aids (HA) in subjects with mild and moderate-to-severe hearing loss. This study was designed as a within-subject feasibility study. Bilateral HA use was assessed using different laboratory tests on speech reception, listening effort, noise tolerance, and localization. All data were evaluated with bilateral and unilateral HA fittings. Forty experienced bilateral HA users were included with hearing impairment ranging from mild to moderate-to-severe. Subjects were stratified into two groups based on the degree of hearing loss. Speech reception in noise, listening effort, and localization tests showed a bilateral benefit for the moderate-to-severely hearing-impaired subjects. A bilateral benefit was also observed for listening effort in the mildly hearing-impaired group. The assessment of listening effort shows promise as a measure of bilateral HA benefit for mild hearing impairment. Localization and speech reception in noise tests provide additional value for larger losses. The next step is to compare experienced unilateral with bilateral HA users. PMID:27460871

  19. Inadvertent insertion of hearing aid impression material into the middle ear: Case report and implications for future community hearing services ☆

    OpenAIRE

    Algudkar, Ashwin; Maden, Belma; Singh, Arvind; Tatla, Taran

    2013-01-01

    INTRODUCTION The creation of ear moulds for hearing aids is generally considered a safe and routine procedure for trained professionals. In the literature there are reports of otological complications caused by hearing aid mould impression material in the middle ear cavity but such complications are considered rare. PRESENTATION OF CASE We present the case of a patient in whom impression material entered the middle ear through a perforation of the tympanic membrane during the process of makin...

  20. Designing of a digital behind-the-ear hearing aid to meet the World Health Organization requirements.

    Science.gov (United States)

    Bento, Ricardo Ferreira; Penteado, Silvio Pires

    2010-06-01

    Hearing loss is a common health issue that affects nearly 10% of the world population as indicated by many international studies. The hearing impaired typically experience more frustration, anxiety, irritability, depression, and disorientation than those with normal hearing levels. The standard rehabilitation tool for hearing impairment is an electronic hearing aid whose main components are transducers (microphone and receiver) and a digital signal processor. These electronic components are manufactured by supply chain rather than by hearing aid manufacturers. Manufacturers can use custom-designed components or generic off-the-shelf components. These electronic components are available as application-specific or off-the-shelf products, with the former designed for a specific manufacturer and the latter for a generic approach. The choice of custom or generic components will affect the product specifications, pricing, manufacturing, life cycle, and marketing strategies of the product. The World Health Organization is interested in making available to developing countries hearing aids that are inexpensive to purchase and maintain. The hearing aid presented in this article was developed with these specifications in mind together with additional contemporary features such as four channels with wide dynamic range compression, an adjustable compression rate for each channel, four comfort programs, an adaptive feedback manager, and full volume control. This digital hearing aid is fitted using a personal computer with minimal hardware requirements in intuitive three-step fitting software. A trimmer-adjusted version can be developed where human and material resources are scarce.

  1. Designing of a digital behind-the-ear hearing aid to meet the World Health Organization requirements.

    Science.gov (United States)

    Bento, Ricardo Ferreira; Penteado, Silvio Pires

    2010-06-01

    Hearing loss is a common health issue that affects nearly 10% of the world population as indicated by many international studies. The hearing impaired typically experience more frustration, anxiety, irritability, depression, and disorientation than those with normal hearing levels. The standard rehabilitation tool for hearing impairment is an electronic hearing aid whose main components are transducers (microphone and receiver) and a digital signal processor. These electronic components are manufactured by supply chain rather than by hearing aid manufacturers. Manufacturers can use custom-designed components or generic off-the-shelf components. These electronic components are available as application-specific or off-the-shelf products, with the former designed for a specific manufacturer and the latter for a generic approach. The choice of custom or generic components will affect the product specifications, pricing, manufacturing, life cycle, and marketing strategies of the product. The World Health Organization is interested in making available to developing countries hearing aids that are inexpensive to purchase and maintain. The hearing aid presented in this article was developed with these specifications in mind together with additional contemporary features such as four channels with wide dynamic range compression, an adjustable compression rate for each channel, four comfort programs, an adaptive feedback manager, and full volume control. This digital hearing aid is fitted using a personal computer with minimal hardware requirements in intuitive three-step fitting software. A trimmer-adjusted version can be developed where human and material resources are scarce. PMID:20724354

  2. Application of the Consumer Decision-Making Model to Hearing Aid Adoption in First-Time Users

    Science.gov (United States)

    Amlani, Amyn M.

    2016-01-01

    Since 1980, hearing aid adoption rates have remained essentially the same, increasing at a rate equal to the organic growth of the population. Researchers have used theoretical models from psychology and sociology to determine those factors or constructs that lead to the adoption of hearing aids by first-time impaired listeners entering the market. In this article, a theoretical model, the Consumer Decision-Making Model (CDM), premised on the neobehavioral approach that considers an individual's psychological and cognitive emphasis toward a product or service, is described. Three theoretical models (i.e., transtheoretical, social model of disability, Health Belief Model), and their relevant findings to the hearing aid market, are initially described. The CDM is then presented, along with supporting evidence of the model's various factors from the hearing aid literature. Future applications of the CDM to hearing health care also are discussed.

  3. Application of the Consumer Decision-Making Model to Hearing Aid Adoption in First-Time Users.

    Science.gov (United States)

    Amlani, Amyn M

    2016-05-01

    Since 1980, hearing aid adoption rates have remained essentially the same, increasing at a rate equal to the organic growth of the population. Researchers have used theoretical models from psychology and sociology to determine those factors or constructs that lead to the adoption of hearing aids by first-time impaired listeners entering the market. In this article, a theoretical model, the Consumer Decision-Making Model (CDM), premised on the neobehavioral approach that considers an individual's psychological and cognitive emphasis toward a product or service, is described. Three theoretical models (i.e., transtheoretical, social model of disability, Health Belief Model), and their relevant findings to the hearing aid market, are initially described. The CDM is then presented, along with supporting evidence of the model's various factors from the hearing aid literature. Future applications of the CDM to hearing health care also are discussed.

  4. “对证选配”助听器%Individualized Hearing Aid Fitting Strategies:Basics and Application

    Institute of Scientific and Technical Information of China (English)

    张建一; 西品香; 马佳; 李媛媛

    2013-01-01

    The maximization of comfortableness and intelligibility for hearing aid users are two objectives in hearing aid fitting. When fitting hearing aids for people with sensorineural hearing loss, the hearing aid fitters are supposed to conduct accurate audiological evaluation, choose and fit hearing aids according to individual conditions, assess the effects of hearing aids properly, have a good command of necessary psychological knowledge and have a good affinity, language ability and ability to communicate with hearing-impaired people.%  助听器配戴者的舒适度和清晰度最大化是助听器验配的两大目标。助听器验配师在为感音神经性聋患者验配助听器时,应进行准确的听力学评估,对证选择助听器,对证调试助听器,科学评估助听器的效果,掌握必要的心理学知识,并具备良好的亲和力、表达能力和沟通能力。

  5. Long-term tinnitus suppression with linear octave frequency transposition hearing AIDS.

    Directory of Open Access Journals (Sweden)

    Elisabeth Peltier

    Full Text Available Over the last three years of hearing aid dispensing, it was observed that among 74 subjects fitted with a linear octave frequency transposition (LOFT hearing aid, 60 reported partial or complete tinnitus suppression during day and night, an effect still lasting after several months or years of daily use. We report in more details on 38 subjects from whom we obtained quantified measures of tinnitus suppression through visual analog scaling and several additional psychoacoustic and audiometric measures. The long-term suppression seems independent of subject age, and of duration and subjective localization of tinnitus. A small but significant correlation was found with audiogram losses but not with high frequency loss slope. Long-term tinnitus suppression was observed for different etiologies, but with a low success rate for sudden deafness. It should be noted that a majority of subjects (23 had a history of noise exposure. Tinnitus suppression started after a few days of LOFT hearing aid use and reached a maximum after a few weeks of daily use. For nine subjects different amounts of frequency shifting were tried and found more or less successful for long-term tinnitus suppression, no correlation was found with tinnitus pitch. When the use of the LOFT hearing aid was stopped tinnitus reappeared within a day, and after re-using the LOFT aid it disappeared again within a day. For about one third of the 38 subjects a classical amplification or a non linear frequency compression aid was also tried, and no such tinnitus suppression was observed. Besides improvements in audiometric sensitivity to high frequencies and in speech discrimination scores, LOFT can be considered as a remarkable opportunity to suppress tinnitus over a long time scale. From a pathophysiological viewpoint these observations seem to fit with a possible re-attribution of activity to previously deprived cerebral areas corresponding to high frequency coding.

  6. Long-term tinnitus suppression with linear octave frequency transposition hearing AIDS.

    Science.gov (United States)

    Peltier, Elisabeth; Peltier, Cedric; Tahar, Stephanie; Alliot-Lugaz, Evelyne; Cazals, Yves

    2012-01-01

    Over the last three years of hearing aid dispensing, it was observed that among 74 subjects fitted with a linear octave frequency transposition (LOFT) hearing aid, 60 reported partial or complete tinnitus suppression during day and night, an effect still lasting after several months or years of daily use. We report in more details on 38 subjects from whom we obtained quantified measures of tinnitus suppression through visual analog scaling and several additional psychoacoustic and audiometric measures. The long-term suppression seems independent of subject age, and of duration and subjective localization of tinnitus. A small but significant correlation was found with audiogram losses but not with high frequency loss slope. Long-term tinnitus suppression was observed for different etiologies, but with a low success rate for sudden deafness. It should be noted that a majority of subjects (23) had a history of noise exposure. Tinnitus suppression started after a few days of LOFT hearing aid use and reached a maximum after a few weeks of daily use. For nine subjects different amounts of frequency shifting were tried and found more or less successful for long-term tinnitus suppression, no correlation was found with tinnitus pitch. When the use of the LOFT hearing aid was stopped tinnitus reappeared within a day, and after re-using the LOFT aid it disappeared again within a day. For about one third of the 38 subjects a classical amplification or a non linear frequency compression aid was also tried, and no such tinnitus suppression was observed. Besides improvements in audiometric sensitivity to high frequencies and in speech discrimination scores, LOFT can be considered as a remarkable opportunity to suppress tinnitus over a long time scale. From a pathophysiological viewpoint these observations seem to fit with a possible re-attribution of activity to previously deprived cerebral areas corresponding to high frequency coding. PMID:23284815

  7. Costs and health effects of screening and delivery of hearing aids in Tamil Nadu, India: an observational study

    Directory of Open Access Journals (Sweden)

    Job Anand

    2009-05-01

    Full Text Available Abstract Background The burden of disease of hearing disorders among adults is high, but a significant part goes undetected. Screening programs in combination with the delivery of hearing aids can alleviate this situation, but the economic attractiveness of such programs is unknown. This study aims to evaluate the population-level costs, effects and cost-effectiveness of alternative delivering hearing aids models in Tamil Nadu, India Methods In an observational study design, we estimated total costs and effects of two active screening programs in the community in combination with the provision of hearing aids at secondary care level, and the costs and effects of the provision of hearing aids at tertiary care level. Screening and hearing aid delivery costs were estimated on the basis of program records and an empirical assessment of health personnel time input. Household costs for seeking and undergoing hearing health care were collected with a questionnaire (see Additional file 2. Health effects were estimated on the basis of compliance with the hearing aid, and associated changes in disability, and were expressed in disability-adjusted life years (DALYs averted. Results Active screening and provision of hearing aids at the secondary care level costs around Rs.7,000 (US$152 per patient, whereas provision of hearing aids at the tertiary care level costs Rs 5,693 (US$122 per patient. The cost per DALY averted was around RS 42,200 (US$900 at secondary care level and Rs 33,900 (US$720 at tertiary care level. The majority of people did consult other providers before being screened in the community. Costs of food and transport ranged between Rs. 2 (US$0,04 and Rs. 39 (US$0,83. Conclusion Active screening and provision of hearing aids at the secondary care level is slightly more costly than passive screening and fitting of hearing aids at the tertiary care level, but seems also able to reach a higher coverage of hearing aids services. Although crude

  8. Intention to use hearing aids: a survey based on the theory of planned behavior

    Directory of Open Access Journals (Sweden)

    Meister H

    2014-09-01

    Full Text Available Hartmut Meister,1 Linda Grugel,1 Markus Meis2 1Jean Uhrmacher Institute for Clinical ENT Research, University of Cologne, Cologne, Germany; 2Hoerzentrum Oldenburg, Oldenburg, Germany Objective: To determine the intention to use hearing aids (HAs by applying the theory of planned behavior (TPB. Design: The TPB is a widely used decision-making model based on three constructs hypothesized to influence the intention to perform a specific behavior; namely, “attitude toward the behavior”, “subjective norm”, and “behavioral control”. The survey was based on a TPB-specific questionnaire addressing factors relevant to HA provision. Study sample: Data from 204 individuals reporting hearing problems were analyzed. Different subgroups were established according to the stage of their hearing help-seeking. Results: The TPB models’ outcome depended on the subgroup. The intention of those participants who had recognized their hearing problems but had not yet consulted an ear, nose, and throat specialist was largely dominated by the “subjective norm” construct, whereas those who had already consulted an ear, nose, and throat specialist or had already tried out HAs were significantly influenced by all constructs. The intention of participants who already owned HAs was clearly less affected by the “subjective norm” construct but was largely dominated by their “attitude toward HAs”. Conclusion: The intention to use HAs can be modeled on the basis of the constructs “attitude toward the behavior”, “subjective norm”, and “behavioral control”. Individual contribution of the constructs to the model depends on the patient’s stage of hearing help-seeking. The results speak well for counseling strategies that explicitly consider the individual trajectory of hearing help-seeking. Keywords: hearing aid uptake, motivation, attitude, subjective norm, behavioral control

  9. Dual-microphone and binaural noise reduction techniques for improved speech intelligibility by hearing aid users

    Science.gov (United States)

    Yousefian Jazi, Nima

    Spatial filtering and directional discrimination has been shown to be an effective pre-processing approach for noise reduction in microphone array systems. In dual-microphone hearing aids, fixed and adaptive beamforming techniques are the most common solutions for enhancing the desired speech and rejecting unwanted signals captured by the microphones. In fact, beamformers are widely utilized in systems where spatial properties of target source (usually in front of the listener) is assumed to be known. In this dissertation, some dual-microphone coherence-based speech enhancement techniques applicable to hearing aids are proposed. All proposed algorithms operate in the frequency domain and (like traditional beamforming techniques) are purely based on the spatial properties of the desired speech source and does not require any knowledge of noise statistics for calculating the noise reduction filter. This benefit gives our algorithms the ability to address adverse noise conditions, such as situations where interfering talker(s) speaks simultaneously with the target speaker. In such cases, the (adaptive) beamformers lose their effectiveness in suppressing interference, since the noise channel (reference) cannot be built and updated accordingly. This difference is the main advantage of the proposed techniques in the dissertation over traditional adaptive beamformers. Furthermore, since the suggested algorithms are independent of noise estimation, they offer significant improvement in scenarios that the power level of interfering sources are much more than that of target speech. The dissertation also shows the premise behind the proposed algorithms can be extended and employed to binaural hearing aids. The main purpose of the investigated techniques is to enhance the intelligibility level of speech, measured through subjective listening tests with normal hearing and cochlear implant listeners. However, the improvement in quality of the output speech achieved by the

  10. Acceptable noise level as a deciding factor for prescribing hearing aids for older adults with cochlear hearing loss e A scoping review

    Institute of Scientific and Technical Information of China (English)

    Hemanth Narayan Shetty; Swathi Subbanna

    2015-01-01

    Older adults often find it difficult to perceive speech, especially in noisy conditions. Though hearing aid is one of the rehabilitative devices available to older adults to alleviate hearing loss, some of them may experience annoyance through hearing aid and hence reject it, may be due to circuitry noise and/or background noise. Acceptable noise level is a direct behavioural measure to estimate the extent of how much a person is able to put up with noise while simultaneously listening to speech. Acceptable noise level is a central auditory measure and it is not influenced by age, gender, presentation level or speaker. Using this measure, we can quantify the annoyance level experienced by an individual. This in-formation is of utmost importance and caution should be paid before setting the parameters in hearing aid, especially for those who are unable to accept noise. In this review article, an attempt has been made to document how to optimize the hearing aid program by setting parameters such as noise reduction circuit, microphone sensitivity and gain. These adjustments of parameters might help to reduce rejection rate of hearing aids, especially in those individuals who are annoyed by background noise. Copyright © 2015 The Authors. Production & hosting by Elsevier (Singapore) Pte Ltd On behalf of PLA General Hospital Department of Otolaryngology Head and Neck Surgery. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

  11. Incisionless Pubovaginal Fascial Sling Using Transvaginal Bone Anchors for the Treatment of Stress Urinary Incontinence

    Directory of Open Access Journals (Sweden)

    Sandip P. Vasavada

    2004-01-01

    Full Text Available Introduction: Bladder neck suspension (BNS for stress urinary incontinence (SUI can have significant morbidity, including bleeding, infection and pain. In an effort to reduce this potential morbidity, we have devised a technique which provides the same suburethral support as a standard anterior vaginal wall sling (AVWS, but without a vaginal or suprapubic incision. We describe this minimally invasive technique. Methods: From April 1998 to February 1999, 85 women underwent an incisionless suburethral fascial sling procedure. A transvaginal bone drill was used to place a bone anchor loaded with #1 prolene suture into the inferior aspect of the pubic bone on either side of the urethra. A subepithelial tunnel was created at the level of the bladder neck. A 2 x 7 cm segment of cadaveric fascia lata was placed through the subepithelial tunnel. The sutures were passed through the fascia 5mm from either edge, effectively creating a 6.0 cm sling. Finally, the sutures are tied up to the pubic symphysis.Results: Follow-up was via a self-administered questionnaire and patient interview. Recurrent SUI was noted in 2/85 (3%. New onset urge incontinence was present in 4/85 (5%. Permanent urinary retention has not occurred in either group. All procedures were performed on an outpatient basis and no operative complications occurred.Conclusions: Early results for the incisionless sling compare favorably with the long term results for the AVWS. This minimally invasive approach has thus far not been associated with any significant complications. Elimination of the vaginal and suprapubic incisions has not compromised efficacy, and appears to reduce the incidence of urge incontinence. Long term follow-up will establish the lasting efficacy of this novel surgical technique.

  12. 8 Pin RIC Socket for Hearing Aid Applications

    DEFF Research Database (Denmark)

    Islam, Aminul; Hansen, Hans Nørgaard; Davids, Søren;

    2012-01-01

    process and the other one is fully automated process. This paper presents the entire process chain for both the concepts and makes a comparative analysis based on the experimental investigation and validation. The work presented here can be a source of valuable information for industrial users......The current paper presents the development of an 8 Pin RIC (Receiver in the canal) Socket for hearing instruments within the framework of the COTECH project. There are 8 industrial demonstrators developed in COTECH based on the converged product and process design. Sonion’s 8 Pin RIC Socket is one...... of them. 8 Pin RIC Socket is a functionally versatile product which can combine many different functions and presents many advantages compared with the previous 3 Pin RIC Socket. For the demonstrator production of the new Socket, two different production concepts were chosen- one based on semi-automated...

  13. Changes in intensity discrimination following monaural long-term use of a hearing aid.

    Science.gov (United States)

    Robinson, K; Gatehouse, S

    1995-02-01

    Previous work has shown that a normally aided ear tested without the hearing aid is better able to identify speech-in-noise than the unaided ear at high sound levels, while performance for the unaided ear is superior at lower sound levels [S. Gatehouse, J. Acoust. Soc. Am. 86, 2103-6 (1989); J. Acoust. Soc. Am. 92, 1258-68 (1992)]. This effect was further explored using intensity discrimination for complex stimuli. Stimuli were half-octave bandpass-filtered tone complexes centered at 0.25 and 3 kHz. Four bilateral, symmetric hearing-impaired listeners with mean HL of 24 dB at 0.25 kHz, and 58 dB at 3 kHz were tested. Intensity discrimination was performed across the dynamic range of the listeners. At sound-pressure levels greater than 85 dB, the normally aided ear tested without the aid was more sensitive to changes in intensity than the unaided ear, whereas at lower levels, the converse occurred. This pattern was observed only for the 3-kHz center frequency, and not for the 0.25-kHz center frequency. Insertion gain measurements using the aids at normal volume showed an average of 20 dB gain at 3 kHz, and -2 dB gain at 0.25 kHz. The changes in intensity discrimination in the normally aided ear are consistent with the frequency-gain characteristics of the hearing aid, and suggest that a change in intensity coding occurred. PMID:7876440

  14. Indication criteria for cochlear implants and hearing aids: impact of audiological and non-audiological findings

    Directory of Open Access Journals (Sweden)

    Sabine Haumann

    2012-08-01

    Full Text Available Owing to technological progress and a growing body of clinical experience, indication criteria for cochlear implants (CI are being extended to less severe hearing impairments. It is, therefore, worth reconsidering these indication criteria by introducing novel testing procedures. The diagnostic evidence collected will be evaluated. The investigation includes postlingually deafened adults seeking a CI. Prior to surgery, speech perception tests [Freiburg Speech Test and Oldenburg sentence (OLSA test] were performed unaided and aided using the Oldenburg Master Hearing Aid (MHA system. Linguistic skills were assessed with the visual Text Reception Threshold (TRT test, and general state of health, socio-economic status (SES and subjective hearing were evaluated through questionnaires. After surgery, the speech tests were repeated aided with a CI. To date, 97 complete data sets are available for evaluation. Statistical analyses showed significant correlations between postsurgical speech reception threshold (SRT measured with the adaptive OLSA test and pre-surgical data such as the TRT test (r=-0.29, SES (r=-0.22 and (if available aided SRT (r=0.53. The results suggest that new measures and setups such as the TRT test, SES and speech perception with the MHA provide valuable extra information regarding indication for CI.

  15. New developments in speech pattern element hearing aids for the profoundly deaf.

    Science.gov (United States)

    Faulkner, A; Walliker, J R; Howard, I S; Ball, V; Fourcin, A J

    1993-01-01

    Two new developments in speech pattern processing hearing aids will be described. The first development is the use of compound speech pattern coding. Speech information which is invisible to the lipreader was encoded in terms of three acoustic speech factors; the voice fundamental frequency pattern, coded as a sinusoid, the presence of aperiodic excitation, coded as a low-frequency noise, and the wide-band amplitude envelope, coded by amplitude modulation of the sinusoid and noise signals. Each element of the compound stimulus was individually matched in frequency and intensity to the listener's receptive range. Audio-visual speech receptive assessments in five profoundly hearing-impaired listeners were performed to examine the contributions of adding voiceless and amplitude information to the voice fundamental frequency pattern, and to compare these codings to amplified speech. In both consonant recognition and connected discourse tracking (CDT), all five subjects showed an advantage from the addition of amplitude information to the fundamental frequency pattern. In consonant identification, all five subjects showed further improvements in performance when voiceless speech excitation was additionally encoded together with amplitude information, but this effect was not found in CDT. The addition of voiceless information to voice fundamental frequency information did not improve performance in the absence of amplitude information. Three of the subjects performed significantly better in at least one of the compound speech pattern conditions than with amplified speech, while the other two performed similarly with amplified speech and the best compound speech pattern condition. The three speech pattern elements encoded here may represent a near-optimal basis for an acoustic aid to lipreading for this group of listeners. The second development is the use of a trained multi-layer-perceptron (MLP) pattern classification algorithm as the basis for a robust real-time voice

  16. Opening the Market for Lower Cost Hearing Aids: Regulatory Change Can Improve the Health of Older Americans.

    Science.gov (United States)

    Blustein, Jan; Weinstein, Barbara E

    2016-06-01

    Hearing loss is a leading cause of disability among older people. Yet only one in seven US adults who could benefit from a hearing aid uses one. This fraction has not increased over the past 30 years, nor have hearing aid prices dropped, despite trends of steady improvements and price reductions in the consumer electronics industry. The President's Council on Science and Technology has proposed changes in the regulation of hearing aids, including the creation of a "basic" low-cost over-the-counter category of devices. We discuss the potential to reduce disability as well as to improve public health, stakeholder responses to the president's council's proposal, and public health efforts to further mitigate the burden of disability stemming from age-related hearing loss. PMID:27077339

  17. Opening the Market for Lower Cost Hearing Aids: Regulatory Change Can Improve the Health of Older Americans.

    Science.gov (United States)

    Blustein, Jan; Weinstein, Barbara E

    2016-06-01

    Hearing loss is a leading cause of disability among older people. Yet only one in seven US adults who could benefit from a hearing aid uses one. This fraction has not increased over the past 30 years, nor have hearing aid prices dropped, despite trends of steady improvements and price reductions in the consumer electronics industry. The President's Council on Science and Technology has proposed changes in the regulation of hearing aids, including the creation of a "basic" low-cost over-the-counter category of devices. We discuss the potential to reduce disability as well as to improve public health, stakeholder responses to the president's council's proposal, and public health efforts to further mitigate the burden of disability stemming from age-related hearing loss.

  18. Cortical Electrophysiological Markers of Language Abilities in Children with Hearing Aids: A Pilot Study

    Directory of Open Access Journals (Sweden)

    David Bakhos

    2014-01-01

    Full Text Available Objective. To investigate cortical auditory evoked potentials (CAEPs in pediatric hearing aid (HA users, with and without language impairment. Design. CAEPs were measured in 11 pediatric HA users (age: 8–12 years with moderate bilateral sensorineural hearing loss (HL; participants were classified according to language ability. CAEPs were also measured for a control group of 11 age-matched, normal-hearing (NH children. Results. HL children without language impairment exhibited normal CAEPs. HL children with language impairment exhibited atypical temporal CAEPs, characterized by the absence of N1c; frontocentral responses displayed normal age-related patterns. Conclusion. Results suggest that abnormal temporal brain function may underlie language impairment in pediatric HA users with moderate sensorineural HL.

  19. Modern prescription theory and application: realistic expectations for speech recognition with hearing AIDS.

    Science.gov (United States)

    Johnson, Earl E

    2013-01-01

    A major decision at the time of hearing aid fitting and dispensing is the amount of amplification to provide listeners (both adult and pediatric populations) for the appropriate compensation of sensorineural hearing impairment across a range of frequencies (e.g., 160-10000 Hz) and input levels (e.g., 50-75 dB sound pressure level). This article describes modern prescription theory for hearing aids within the context of a risk versus return trade-off and efficient frontier analyses. The expected return of amplification recommendations (i.e., generic prescriptions such as National Acoustic Laboratories-Non-Linear 2, NAL-NL2, and Desired Sensation Level Multiple Input/Output, DSL m[i/o]) for the Speech Intelligibility Index (SII) and high-frequency audibility were traded against a potential risk (i.e., loudness). The modeled performance of each prescription was compared one with another and with the efficient frontier of normal hearing sensitivity (i.e., a reference point for the most return with the least risk). For the pediatric population, NAL-NL2 was more efficient for SII, while DSL m[i/o] was more efficient for high-frequency audibility. For the adult population, NAL-NL2 was more efficient for SII, while the two prescriptions were similar with regard to high-frequency audibility. In terms of absolute return (i.e., not considering the risk of loudness), however, DSL m[i/o] prescribed more outright high-frequency audibility than NAL-NL2 for either aged population, particularly, as hearing loss increased. Given the principles and demonstrated accuracy of desensitization (reduced utility of audibility with increasing hearing loss) observed at the group level, additional high-frequency audibility beyond that of NAL-NL2 is not expected to make further contributions to speech intelligibility (recognition) for the average listener. PMID:24253361

  20. Knowledge on adaptation process of users of hearing aid

    Directory of Open Access Journals (Sweden)

    Sant'Anna, Leandro Machado

    2008-09-01

    Full Text Available Introduction: Professionals that work in this area know how important the orientation to the use of auditory device is, which involves the care required to handle and use the equipment and aspects aiming at the adaptation. Objective: To compare the knowledge of both long-term and new users about the adaptation process to the use of auditory device, so as to provide speech and language pathologists with a greater knowledge about the aspects that most influence the adaptation process. Method: This research is an observational, descriptive, cross-sectional, contemporary, retrospective study. The new and old users answered a questionnaire with information on the auditory device conservation and the adaptation process. The results were compared quantitatively through statistical review and qualitatively. Results: The age of the individuals in this study varied between 28 and 90 years. In some aspects, old and new users presented the same knowledge level. Conclusion: New users of auditory devices have been looking for hearing (re habilitation increasingly later. The action of phonoaudiology in the process of selection and adaptation to auditory devices among experienced and new users is extremely important to an effective acclimatization.

  1. A sub-milliwatt audio-processing platform for digital hearing aids

    Science.gov (United States)

    Jia, Yuan; Liming, Chen; Zenghui, Yu; Yong, Hei

    2014-07-01

    We present a novel audio-processing platform, FlexEngine, which is composed of a 24-bit application-specific instruction-set processor (ASIP) and five dedicated accelerators. Acceleration instructions, compact instructions and repeat instruction are added into the ASIP's instruction set to deal with some core tasks of hearing aid algorithms. The five configurable accelerators are used to execute several of the most common functions of hearing aids. Moreover, several low power strategies, such as clock gating, data isolation, memory partition, bypass mode, sleep mode, are also applied in this platform for power reduction. The proposed platform is implemented in CMOS 130 nm technology, and test results show that power consumption of FlexEngine is 0.863 mW with the clock frequency of 8 MHz at Vdd = 1.0 V.

  2. Combination of Adaptive Feedback Cancellation and Binaural Adaptive Filtering in Hearing Aids

    Science.gov (United States)

    Lombard, Anthony; Reindl, Klaus; Kellermann, Walter

    2009-12-01

    We study a system combining adaptive feedback cancellation and adaptive filtering connecting inputs from both ears for signal enhancement in hearing aids. For the first time, such a binaural system is analyzed in terms of system stability, convergence of the algorithms, and possible interaction effects. As major outcomes of this study, a new stability condition adapted to the considered binaural scenario is presented, some already existing and commonly used feedback cancellation performance measures for the unilateral case are adapted to the binaural case, and possible interaction effects between the algorithms are identified. For illustration purposes, a blind source separation algorithm has been chosen as an example for adaptive binaural spatial filtering. Experimental results for binaural hearing aids confirm the theoretical findings and the validity of the new measures.

  3. Combination of Adaptive Feedback Cancellation and Binaural Adaptive Filtering in Hearing Aids

    Directory of Open Access Journals (Sweden)

    Anthony Lombard

    2009-01-01

    Full Text Available We study a system combining adaptive feedback cancellation and adaptive filtering connecting inputs from both ears for signal enhancement in hearing aids. For the first time, such a binaural system is analyzed in terms of system stability, convergence of the algorithms, and possible interaction effects. As major outcomes of this study, a new stability condition adapted to the considered binaural scenario is presented, some already existing and commonly used feedback cancellation performance measures for the unilateral case are adapted to the binaural case, and possible interaction effects between the algorithms are identified. For illustration purposes, a blind source separation algorithm has been chosen as an example for adaptive binaural spatial filtering. Experimental results for binaural hearing aids confirm the theoretical findings and the validity of the new measures.

  4. Psychophysics, fitting, and signal processing for combined hearing aid and cochlear implant stimulation.

    Science.gov (United States)

    Francart, Tom; McDermott, Hugh J

    2013-01-01

    The addition of acoustic stimulation to electric stimulation via a cochlear implant has been shown to be advantageous for speech perception in noise, sound quality, music perception, and sound source localization. However, the signal processing and fitting procedures of current cochlear implants and hearing aids were developed independently, precluding several potential advantages of bimodal stimulation, such as improved sound source localization and binaural unmasking of speech in noise. While there is a large and increasing population of implantees who use a hearing aid, there are currently no generally accepted fitting methods for this configuration. It is not practical to fit current commercial devices to achieve optimal binaural loudness balance or optimal binaural cue transmission for arbitrary signals and levels. There are several promising experimental signal processing systems specifically designed for bimodal stimulation. In this article, basic psychophysical studies with electric acoustic stimulation are reviewed, along with the current state of the art in fitting, and experimental signal processing techniques for electric acoustic stimulation.

  5. A sub-milliwatt audio-processing platform for digital hearing aids

    International Nuclear Information System (INIS)

    We present a novel audio-processing platform, FlexEngine, which is composed of a 24-bit application-specific instruction-set processor (ASIP) and five dedicated accelerators. Acceleration instructions, compact instructions and repeat instruction are added into the ASIP's instruction set to deal with some core tasks of hearing aid algorithms. The five configurable accelerators are used to execute several of the most common functions of hearing aids. Moreover, several low power strategies, such as clock gating, data isolation, memory partition, bypass mode, sleep mode, are also applied in this platform for power reduction. The proposed platform is implemented in CMOS 130 nm technology, and test results show that power consumption of FlexEngine is 0.863 mW with the clock frequency of 8 MHz at Vdd = 1.0 V. (semiconductor integrated circuits)

  6. Evaluation of frequency-lowering algorithms for intelligibility of Chinese speech in hearing-aid users

    Institute of Scientific and Technical Information of China (English)

    Xianbo Xiao; Hui Zhang; Guangshu Hu; Chunhong Liu; Jia Liu

    2009-01-01

    Despite the attention being given to and the knowledge of the benefits of evaluating frequency-lowering algorithms for hearing-impaired people, the causality between these algorithms and their benefits is still not clear. This is aggravated by the fact that comparative research on the methodologies and skills required for fitting an appropriate algorithm to individual patients is lacking. Against this back-drop, the current study has attempted to make progress in this area. In this experiment, six experienced traditional hearing-aid users with severe impairments in the high frequencies were fitted with two different frequency-lowering methods, and weekly hearing tests were con-ducted to track the benefits of such methods. After the experiment, five of the listeners accepted the frequency-lowering algorithms. Both methods showed superior results when compared with the listeners' own hearing aids in most of the tests, and the segmented compression algorithm was indicated to have better "anti-noise" quality and speech intelligibility improvement capabilities. A preference for the appli-cation of proportional compression to unvoiced speech was also found in this algorithm. Unlike in previous studies, all speech materials here are recorded in Chinese. Therefore, the results could also be used to evaluate the benefits of frequency-lowering to the intelligibility of Chinese speech for patients. As a result, an improvement was found, especially in the recognition of consonants. Moreover, no adverse effect was found in intonation recognition.

  7. Perception of Suprasegmental Speech Features via Bimodal Stimulation: Cochlear Implant on One Ear and Hearing Aid on the Other

    Science.gov (United States)

    Most, Tova; Harel, Tamar; Shpak, Talma; Luntz, Michal

    2011-01-01

    Purpose: The purpose of the study was to evaluate the contribution of acoustic hearing to the perception of suprasegmental features by adults who use a cochlear implant (CI) and a hearing aid (HA) in opposite ears. Method: 23 adults participated in this study. Perception of suprasegmental features--intonation, syllable stress, and word…

  8. [Selected marketing aspects in the hearing aids fitting and their distribution].

    Science.gov (United States)

    Sojkin, Bogdan; Pruszewicz, Antoni; Swidzińska, Anna; Swidziński, Piotr

    2002-01-01

    The developing of free market in Poland gives medical firms of opportunities but also necessity of adoption for more and more individual needs of customers. This article presents some aspects of marketing on the hearing aids market. The conclusions are based on long observation and empirical research. Problems mentioned in it are connected with principles like distribution channels, specific customers services and promotion. It also shows relations between medical firms, specialists, doctors, audiologists and real customers. PMID:12094647

  9. Adaptive Feedback Cancellation With Band-Limited LPC Vocoder in Digital Hearing Aids

    OpenAIRE

    Ma, Guilin; Gran, Fredrik; Jacobsen, Finn; Agerkvist, Finn T.

    2011-01-01

    Feedback oscillation is one of the major issues with hearing aids. An effective way of feedback suppression is adaptive feedback cancellation, which uses an adaptive filter to estimate the feedback path. However, when the external input signal is correlated with the receiver input signal, the estimate of the feedback path is biased. This so-called “bias problem” results in a large modeling error and a cancellation of the desired signal. This paper proposes a band-limited linear predictive cod...

  10. A Combined Feedback and Noise Cancellation Algorithm for Binaural Hearing Aids

    OpenAIRE

    Lee, H. -W.; JEON, M.-Y.

    2011-01-01

    This paper proposes an adaptive algorithm for the combined acoustic feedback and noise cancellation in the binaural hearing aids. The proposed algorithm is based on dual microphones for feedback cancellation and the beamforming method for noise cancellation. The coefficients of feedback canceller are updated after subtracting the speech signal from the input signal by dual microphones. And the noise canceller reduces the noise signal in the residual signal excluding the speech by the beam...

  11. Intention to use hearing aids: a survey based on the theory of planned behavior

    OpenAIRE

    Meister H; Grugel L; Meis M

    2014-01-01

    Hartmut Meister,1 Linda Grugel,1 Markus Meis2 1Jean Uhrmacher Institute for Clinical ENT Research, University of Cologne, Cologne, Germany; 2Hoerzentrum Oldenburg, Oldenburg, Germany Objective: To determine the intention to use hearing aids (HAs) by applying the theory of planned behavior (TPB). Design: The TPB is a widely used decision-making model based on three constructs hypothesized to influence the intention to perform a specific behavior; namely, “attitude toward the behav...

  12. Remote hearing aid fitting: Tele-audiology in the context of Brazilian Public Policy

    OpenAIRE

    Penteado, Silvio Pires; Ramos, Sueli de Lima; Battistella, Linamara Rizzo; Marone, Silvio Antonio Monteiro; Bento, Ricardo Ferreira

    2012-01-01

    Summary Introduction: Currently, the Brazilian government has certificated nearly 140 specialized centers in hearing aid fittings through the Brazilian National Health System (SUS). Remote fitting through the Internet can allow a broader and more efficient coverage with a higher likelihood of success for patients covered by the SUS, as they can receive fittings from their own homes instead of going to the few and distant specialized centers. Aim: To describe a case of remote fitting between 2...

  13. EVALUATION OF SOUND CLASSIFICATION USING MODIFIED CLASSIFIER AND SPEECH ENHANCEMENT USING ICA ALGORITHM FOR HEARING AID APPLICATION

    OpenAIRE

    N. Shanmugapriya; E. Chandra

    2016-01-01

    Hearing aid users are exposed to diversified vocal scenarios. The necessity for sound classification algorithms becomes a vital factor to yield good listening experience. In this work, an approach is proposed to improve the speech quality in the hearing aids based on Independent Component Analysis (ICA) algorithm with modified speech signal classification methods. The proposed algorithm has better results on speech intelligibility than other existing algorithm and this result has been proved ...

  14. Medical Devices; Ear, Nose, and Throat Devices; Classification of the Tympanic Membrane Contact Hearing Aid. Final order.

    Science.gov (United States)

    2016-01-21

    The Food and Drug Administration (FDA) is classifying the tympanic membrane contact hearing aid into class II (special controls). The special controls that will apply to the device are identified in this order and will be part of the codified language for the tympanic membrane contact hearing aid's classification. The Agency is classifying the device into class II (special controls) in order to provide a reasonable assurance of safety and effectiveness of the device. PMID:26803881

  15. A Link Loss Model for the On-Body Propagation Channel for Binaural Hearing Aids

    Science.gov (United States)

    Chandra, Rohit; Johansson, Anders J.

    2013-12-01

    Binaural hearing aids communicate with each other through a wireless link for synchronization. A propagation model is needed to estimate the ear-to-ear link loss for such binaural hearing aids. The link loss is a critical parameter in a link budget to decide the sensitivity of the transceiver. In this paper, we have presented a model for the deterministic component of the ear-to-ear link loss. The model takes into account the dominant paths having most of the power of the creeping wave from the transceiver in one ear to the transceiver in other ear and the effect of the protruding part of the outer ear called pinna. Simulations are done to validate the model using in-the-ear (ITE) placement of antennas at 2.45 GHz on two heterogeneous phantoms of different age-group and body size. The model agrees with the simulations. The ear-to-ear link loss between the antennas for the binaural hearing aids in the homogeneous SAM phantom is compared with a heterogeneous phantom. It is found that the absence of the pinna and the lossless shell in the SAM phantom underestimate the link loss. This is verified by the measurements on a phantom where we have included the pinnas fabricated by 3D-printing.

  16. Evaluation of feedback reduction techniques in hearing aids based on physical performance measures.

    Science.gov (United States)

    Spriet, Ann; Moonen, Marc; Wouters, Jan

    2010-09-01

    This paper presents a physical evaluation of four feedback cancellation techniques in commercial hearing aids and two implementations of a recently developed feedback cancellation algorithm. Based on physical measures for detecting instability, oscillations and distortion, three performance aspects were measured: 1) the added stable gain compared to the hearing aid operating without feedback reduction for white noise as well as for spectrally colored input signals in two static acoustic conditions, 2) the amount of feedback, oscillations and distortion at gain values below the maximum stable gain, 3) the ability to track feedback path changes. Added stable gains between 3 dB and 26 dB were identified. Five of the six techniques achieve worse feedback reduction for a tonal opera input signal than for a speech input signal. Preventing the feedback canceller to drift away from an initial feedback path measurement results in improved performance for tonal signals at the expense of a worse feedback reduction in the acoustic conditions that differ from the condition for which the initialization was performed, as well as a worse tracking of feedback path changes. Repeated measures indicated that the reproducibility of the test set-up is crucial, in particular when the hearing aid operates close to instability. PMID:20815460

  17. A Link Loss Model for the On-body Propagation Channel for Binaural Hearing Aids

    CERN Document Server

    Chandra, Rohit

    2013-01-01

    Binaural hearing aids communicate with each other through a wireless link for synchronization. A propagation model is needed to estimate the ear-to-ear link loss for such binaural hearing aids. The link loss is a critical parameter in a link budget to decide the sensitivity of the transceiver. In this paper, we have presented a model for the deterministic component of the ear-to-ear link loss. The model takes into account the dominant paths having most of the power of the creeping wave from the transceiver in one ear to the transceiver in other ear and the effect of the protruding part of the outer ear called pinna. Simulations are done to validate the model using in-the-ear (ITE) placement of antennas at 2.45 GHz on two heterogeneous phantoms of different age-group and body size. The model agrees with the simulations. The ear-to-ear link loss between the antennas for the binaural hearing aids in the homogeneous SAM phantom is compared with a heterogeneous phantom. It is found that the absence of the pinna an...

  18. Evaluation of Speech-Perception Training for Hearing Aid Users: A Multisite Study in Progress.

    Science.gov (United States)

    Miller, James D; Watson, Charles S; Dubno, Judy R; Leek, Marjorie R

    2015-11-01

    Following an overview of theoretical issues in speech-perception training and of previous efforts to enhance hearing aid use through training, a multisite study, designed to evaluate the efficacy of two types of computerized speech-perception training for adults who use hearing aids, is described. One training method focuses on the identification of 109 syllable constituents (45 onsets, 28 nuclei, and 36 codas) in quiet and in noise, and on the perception of words in sentences presented in various levels of noise. In a second type of training, participants listen to 6- to 7-minute narratives in noise and are asked several questions about each narrative. Two groups of listeners are trained, each using one of these types of training, performed in a laboratory setting. The training for both groups is preceded and followed by a series of speech-perception tests. Subjects listen in a sound field while wearing their hearing aids at their usual settings. The training continues over 15 to 20 visits, with subjects completing at least 30 hours of focused training with one of the two methods. The two types of training are described in detail, together with a summary of other perceptual and cognitive measures obtained from all participants. PMID:27587914

  19. A Compact and Low-Cost MEMS Loudspeaker for Digital Hearing Aids.

    Science.gov (United States)

    Sang-Soo Je; Rivas, F; Diaz, R E; Jiuk Kwon; Jeonghwan Kim; Bakkaloglu, B; Kiaei, S; Junseok Chae

    2009-10-01

    A microelectromechanical-systems (MEMS)-based electromagnetically actuated loudspeaker to reduce form factor, cost, and power consumption, and increase energy efficiency in hearing-aid applications is presented. The MEMS loudspeaker has multilayer copper coils, an NiFe soft magnet on a thin polyimide diaphragm, and an NdFeB permanent magnet on the perimeter. The coil impedance is measured at 1.5 Omega, and the resonant frequency of the diaphragm is located far from the audio frequency range. The device is driven by a power-scalable, 0.25-mum complementary metal-oxide semiconductor class-D SigmaDelta amplifier stage. The class-D amplifier is formed by a differential H-bridge driven by a single bit, pulse-density-modulated SigmaDelta bitstream at a 1.2-MHz clock rate. The fabricated MEMS loudspeaker generates more than 0.8-mum displacement, equivalent to 106-dB sound pressure level (SPL), with 0.13-mW power consumption. Driven by the SigmaDelta class-D amplifier, the MEMS loudspeaker achieves measured 65-dB total harmonic distortion (THD) with a measurement uncertainty of less than 10%. Energy-efficient and cost-effective advanced hearing aids would benefit from further miniaturization via MEMS technology. The results from this study appear very promising for developing a compact, mass-producible, low-power loudspeaker with sufficient sound generation for hearing-aid applications. PMID:23853273

  20. SVD-Based Optimal Filtering Technique for Noise Reduction in Hearing Aids Using Two Microphones

    Directory of Open Access Journals (Sweden)

    Jean-Baptiste Maj

    2002-04-01

    Full Text Available We introduce a new SVD-based (Singular value decomposition strategy for noise reduction in hearing aids. This technique is evaluated for noise reduction in a behind-the-ear (BTE hearing aid where two omnidirectional microphones are mounted in an endfire configuration. The behaviour of the SVD-based technique is compared to a two-stage adaptive beamformer for hearing aids developed by Vanden Berghe and Wouters (1998. The evaluation and comparison is done with a performance metric based on the speech intelligibility index (SII. The speech and noise signals are recorded in reverberant conditions with a signal-to-noise ratio of 0 dB and the spectrum of the noise signals is similar to the spectrum of the speech signal. The SVD-based technique works without initialization nor assumptions about a look direction, unlike the two-stage adaptive beamformer. Still, for different noise scenarios, the SVD-based technique performs as well as the two-stage adaptive beamformer, for a similar filter length and adaptation time for the filter coefficients. In a diffuse noise scenario, the SVD-based technique performs better than the two-stage adaptive beamformer and hence provides a more flexible and robust solution under speaker position variations and reverberant conditions.

  1. Directional hearing aid using hybrid adaptive beamformer (HAB) and binaural ITE array

    Science.gov (United States)

    Shaw, Scott T.; Larow, Andy J.; Gibian, Gary L.; Sherlock, Laguinn P.; Schulein, Robert

    2002-05-01

    A directional hearing aid algorithm called the Hybrid Adaptive Beamformer (HAB), developed for NIH/NIA, can be applied to many different microphone array configurations. In this project the HAB algorithm was applied to a new array employing in-the-ear microphones at each ear (HAB-ITE), to see if previous HAB performance could be achieved with a more cosmetically acceptable package. With diotic output, the average benefit in threshold SNR was 10.9 dB for three HoH and 11.7 dB for five normal-hearing subjects. These results are slightly better than previous results of equivalent tests with a 3-in. array. With an innovative binaural fitting, a small benefit beyond that provided by diotic adaptive beamforming was observed: 12.5 dB for HoH and 13.3 dB for normal-hearing subjects, a 1.6 dB improvement over the diotic presentation. Subjectively, the binaural fitting preserved binaural hearing abilities, giving the user a sense of space, and providing left-right localization. Thus the goal of creating an adaptive beamformer that simultaneously provides excellent noise reduction and binaural hearing was achieved. Further work remains before the HAB-ITE can be incorporated into a real product, optimizing binaural adaptive beamforming, and integrating the concept with other technologies to produce a viable product prototype. [Work supported by NIH/NIDCD.

  2. Atitudes frente às próteses auditivas Attitudes towards hearing aids

    Directory of Open Access Journals (Sweden)

    Bárbara Guimarães Bastos

    2009-01-01

    Full Text Available OBJETIVOS: avaliar as atitudes frente à deficiência auditiva e o aparelho de amplificação sonora individual (AASI em candidatos e usuários destes dispositivos. Verificar se existe relação entre tais atitudes e os dados demográficos, audiométricos e características do AASI. MÉTODOS: 63 indivíduos (35 homens e 28 mulheres, idade média de 64,3 anos com deficiência auditiva neurossensorial bilateral de diferentes graus, candidatos e usuários de AASI responderam o "Questionário de Atitudes Frente à Deficiência Auditiva" (ALHQ v3.0. Foi analisada a distribuição da pontuação das subescalas do ALHQ e realizada a correlação entre estas e os dados demográficos, audiológicos e da adaptação do AASI dos participantes. Foram também realizadas comparações da pontuação do ALHQ entre os grupos de candidatos e usuários, entre homens e mulheres. RESULTADOS: não houve distribuição normal das respostas nas subescalas do ALHQ. Não houve correlações entre a pontuação do ALHQ com os dados demográficos e audiológicos. Foram verificadas correlações fracas e significativas entre as subescalas do questionário: "estratégias negativas" e "estima" (rho=-0,39, "negação" e "estima" (rho=-0,27, "estratégias negativas" e "associações negativas" (rho=0,25 e "negação" e "estratégias negativas" (rho=-0,30. Houve diferença significativa nas subescalas estratégias negativas (p=0,02 e associações negativas (p=0,00 entre o grupo de candidatos e usuários. Não houve diferença na pontuação entre homens e mulheres. CONCLUSÃO: a existência de atitudes negativas frente à deficiência auditiva e ao uso do AASI reforça a necessidade do aconselhamento de ajuste pessoal incluído no processo de adaptação do AASI em adultos e idosos. É necessário validar o questionário traduzido para o português brasileiro.PURPOSE: to evaluate the attitudes towards hearing loss and hearing aids in a group of hearing aid candidates and users

  3. Auditory Condition and Hearing Aids in 91 Adults with Hearing-impairment%91例成人听力状况及助听效果分析

    Institute of Scientific and Technical Information of China (English)

    邱素梅; 冯娟; 邹建华

    2014-01-01

    Objective To investigate the auditory condition in adults with hearing-impairment and evaluate the outcome of the hearing aid. Methods The threshold of air-bone-conduction audiometry and binaural hearing aid in 91 adults were determined with pure tone audi-ometry, and their satisfaction to hearing aids were investigated with free interview. Results The threshold of hearing and hearing aid were positively correlated. The satisfaction did not significantly correlate with the threshold of hearing aid, but with the time of deprivation of hearing. The hearing threshold classification was better in the patients with the audiogram of flat, raising, slow down type than with audio-gram of Shu type, which defined as hearing reacted only in 1 or 2 frequency. Conclusion It is important to improve the primary otology pro-tection, as well as the rehabilitation from the hearing aids.%目的:了解成人听力状况,评价助听效果。方法回顾性分析91例听力损害成人纯音测听法双耳气骨导听阈及助听听阈;通过与患者的日常用语交谈确定患者满意程度。结果裸耳听阈与助听听阈呈正相关;助听效果最适并不代表患者心理感知最好;听力剥夺时间越短,佩戴助听器后的心理感知越好;听力曲线呈平坦型、上升型、缓降型的助听效果较佳,蜀型助听效果较差。结论应加强耳科初级保护,及时发现听力问题,同时保证助听器发挥最大作用。

  4. Suppression of Acoustic Oscillation in Hearing Aids: System and Circuit Design

    Science.gov (United States)

    Wang, Rongtai

    1995-01-01

    Two types of techniques for the suppression of acoustic oscillation in hearing aids have been studied, namely feed forward suppression and feedback cancellation. For feed forward suppression we introduce the maximum phase equalization (MPE) method based on the minimum phase theory. This method provides us with a higher degree of flexibility in selecting appropriate auxiliary techniques to suppress the acoustic oscillations. Examples of these auxiliary techniques have been described. But there is a limitation on the maximum usable gain increase by using feed forward techniques. For feedback cancellation techniques we present the knowledge based adaptive feedback cancellation (KBAFC) algorithm. This algorithm is fundamentally different from any previous technique. First, the KBAFC algorithm is based on the observation that although the hearing aid open loop transfer function does vary due to the change of the acoustic environment, however the structural behavior of the open loop transfer function remains invariant for a hearing aid in normal use. This property has been confirmed by experiments. In all previous feedback cancellation algorithms, such knowledge of the open loop transfer function is ignored. Second, in the KBAFC algorithm, since the structural behavior of the open loop transfer function is known, digital IIR and analog filters can be used. Additionally, a set of pure tones can be used as a probe signal. As a result, the computation complexity is reduced and the hearing aid is quiet. While in all previous feedback cancellation algorithms, since the open loop transfer function is considered to be a completely unknown, usually a FIR filter is used as a cancellation filter, and white noise is used as the probe signal. As a result, the computation complexity is large and the hearing aid is noisier. In order to verify the KBAFC algorithm, a prototype is implemented. The test results shows that by using the KBAFC algorithm the maximum cancellation can be larger

  5. A practical tablet-based hearing aid configuration as an exemplar project for students of instrumentation

    Directory of Open Access Journals (Sweden)

    Ricardo Simeoni

    2015-06-01

    Full Text Available This paper presents the configuration and digital signal processing details of a tablet-based hearing aid transmitting wirelessly to standard earphones, whereby the tablet performs full sound processing rather than solely providing a means of setting adjustment by streaming to conventional digital hearing aids. The presented device confirms the recognized advantages of this tablet-based approach (e.g., in relation to cost, frequency domain processing, amplification range, versatility of functionality, component battery rechargeability, and flags the future wider-spread availability of such hearing solutions within mainstream healthcare. The use of a relatively high sampling frequency was found to be beneficial for device performance, while the use of optional off-the-shelf add-on components (e.g., data acquisition device, high fidelity microphone, compact wireless transmitter/ receiver, wired headphones are also discussed in relation to performance optimization. The easy-to-follow configuration utilized is well suited to student learning/research instrumentation projects within the health and biomedical sciences. In this latter regard, the presented device was pedagogically integrated into a flipped classroom approach for the teaching of bioinstrumentation within an Allied Health Sciences School, with the subsequent establishment of positive student engagement outcomes.

  6. Speech perception and quality of life of open-fit hearing aid users

    Science.gov (United States)

    GARCIA, Tatiana Manfrini; JACOB, Regina Tangerino de Souza; MONDELLI, Maria Fernanda Capoani Garcia

    2016-01-01

    ABSTRACT Objective To relate the performance of individuals with hearing loss at high frequencies in speech perception with the quality of life before and after the fitting of an open-fit hearing aid (HA). Methods The WHOQOL-BREF had been used before the fitting and 90 days after the use of HA. The Hearing in Noise Test (HINT) had been conducted in two phases: (1) at the time of fitting without an HA (situation A) and with an HA (situation B); (2) with an HA 90 days after fitting (situation C). Study Sample Thirty subjects with sensorineural hearing loss at high frequencies. Results By using an analysis of variance and the Tukey’s test comparing the three HINT situations in quiet and noisy environments, an improvement has been observed after the HA fitting. The results of the WHOQOL-BREF have showed an improvement in the quality of life after the HA fitting (paired t-test). The relationship between speech perception and quality of life before the HA fitting indicated a significant relationship between speech recognition in noisy environments and in the domain of social relations after the HA fitting (Pearson’s correlation coefficient). Conclusions The auditory stimulation has improved speech perception and the quality of life of individuals. PMID:27383708

  7. Pilot study to evaluate children with hearing aids through PEACH and TEACH in a rural community

    Directory of Open Access Journals (Sweden)

    Lingamdenne Paul Emerson

    2015-07-01

    Full Text Available This study was done to evaluate the use of functional measures in hearing aid benefit assessment of children (n = 60 in a rural community. Children with age ranging from 6 months to 15 years with moderately severe to profound hearing loss were evaluated. They were evaluated by functional measures PEACH and TEACH which were translated into local language (Tamil. The relationship between PEACH and TEACH was calculated using SPSS and Chi-square tests. It was found that PEACH and TEACH questionnaires can be easily administered in the rural community and gives a quantitative measure of the effect of amplification. It gave caregivers a motivation to take an active part in the rehabilitation. This model of using functional evaluation tools to evaluate the suitability and effectiveness of amplification can be applied in children in developing countries.

  8. From Hearing Aids, Prostheses and Cochlear Implants to "Bionic" Feedback Phonation

    Directory of Open Access Journals (Sweden)

    Petros Stagiopoulos

    2016-08-01

    Full Text Available In Otorhinolaryngological medical practice therapeutic devices are used that are highly invasive and immersive. For aural and oral communication these could be hearing aids, prosthetics, implants or radio-electronic appliances that build up a bionic environment with apparent tendencies for virtualization. The popularization of such devices promotes the extensive use of Brain Computer Interfaces to both the scientific community and the consumer market. The use of bionic devices clinched with synapses of the nerves does not merely mingle input activity to brain activity, but also it provides a virtual channel for augmenting and manipulating speech communication, language communication and even further musical communication. The effects of bionic aural and oral communication when learning practices for the impaired in hearing are applied is encountered in terms of ability for speech perception and linguistic competence

  9. Industrial wideband noise reduction for hearing aids using a headset with adaptive-feedback active noise cancellation.

    Science.gov (United States)

    Lin, J H; Li, P C; Tang, S T; Liu, P T; Young, S T

    2005-11-01

    High-intensity noises are a health hazard for industrial workers, and hearing protection is necessary to prevent hearing loss. Passive methods, such as ear muffs, are ineffective against low-frequency noise. Moreover, many hearing-impaired workers must wear hearing aids to enable communication at their workplace, and such aids can amplify ambient noise. To overcome this problem, the present study developed a headset equipped with a digital signal processing system to implement adaptive-feedback active noise cancellation (AFANC) to reduce low-frequency noise. The proposed AFANC headset was effective against wideband industrial noise, with a maximum noise spectrum power reduction of 30 dB. Furthermore, when used with a hearing aid, it improved the speech signal-to-noise ratio by up to 14 dB. These results suggest that a headset with AFANC would be useful for hearing protection in workplaces with high levels of low-frequency industrial noise, especially for hearing-impaired workers. PMID:16594300

  10. Social representation of hearing aids: cross-cultural study in India, Iran, Portugal, and the United Kingdom

    Directory of Open Access Journals (Sweden)

    Manchaiah V

    2015-10-01

    Full Text Available Vinaya Manchaiah,1 Berth Danermark,2 Vinay,3 Tayebeh Ahmadi,4 David Tomé,5 Rajalakshmi Krishna,6 Per Germundsson7 1Department of Speech and Hearing Sciences, Lamar University, Beaumont, Texas, USA; 2Swedish Institute for Disability Research, Örebro University, Örebro, Sweden; 3Department of Clinical Medicine, University of Tromsø, Tromsø, Norway; 4Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; 5Department of Audiology, School of Allied Health Sciences, Polytechnic Institute of Porto, Vila Nova de Gaia, Portugal; 6All India Institute of Speech and Hearing, University of Mysore, Mysore, India; 7The Department of Health and Welfare Studies, Malmö University, Malmö, Sweden Background: The current study was aimed at understanding the social representation of hearing aids in India, Iran, Portugal, and the United Kingdom. We also compared these results to explore the cross-cultural differences and similarities among these countries. Methods: The study involved a cross-sectional design, and the data were collected from four different countries using the snowball sampling method. Data were analyzed using a content analysis to identify the most-similar categories of responses reported, a co-occurrences analysis to see which of these categories are reported commonly, and a chi-square analysis to study if there was any association between positive, neutral, and negative connotations among participants in different countries. Results: The current study revealed four different social representations of hearing aids from India, Iran, Portugal, and the United Kingdom, and also a global index. Conclusion: The study results provide very useful insights into how hearing aids are represented in the society. These findings may have important implications for public education and also for manufacturers from the viewpoint of designing and marketing hearing aids in different countries. Keywords: hearing aids

  11. Novel Acoustic Feedback Cancellation Approaches In Hearing Aid Applications Using Probe Noise and Probe Noise Enhancement

    DEFF Research Database (Denmark)

    Guo, Meng; Jensen, Søren Holdt; Jensen, Jesper

    2012-01-01

    Adaptive filters are widely used in acoustic feedback cancellation systems and have evolved to be state-of-the-art. One major challenge remaining is that the adaptive filter estimates are biased due to the nonzero correlation between the loudspeaker signals and the signals entering the audio syst...... the proposed approaches much more attractive in practical applications. We demonstrate this through a simulation experiment with audio signals in a hearing aid acoustic feedback cancellation system, where the convergence rate is improved by as much as a factor of 10....

  12. Investigation of Multi-Antenna Mobile Terminals in Terms of Hearing Aids Compatibility

    DEFF Research Database (Denmark)

    Bonev, Ivan Bonev; Franek, Ondrej; Pedersen, Gert Frølund

    2011-01-01

    In this paper, we present an investigation of the near fields (NF) of different configurations of two antennas mobile phones with a candy bar phone factor. The study has been carried out via Finite Difference Time Domain (FDTD) simulations. Interesting paradigms not valid for the single antennas ...... have been identified. In order to obtain a hearing aids compatible (HAC) mobile phone having two antennas, special attention has to be focused on the NF at the high band as opposed to the single antenna case where the HAC is defined by the NF at the low band....

  13. Interpolation Filter Design for Hearing-Aid Audio Class-D Output Stage Application

    DEFF Research Database (Denmark)

    Pracný, Peter; Bruun, Erik; Muntal, Pere Llimós

    2012-01-01

    This paper deals with a design of a digital interpolation filter for a 3rd order multi-bit ΣΔ modulator with over-sampling ratio OSR = 64. The interpolation filter and the ΣΔ modulator are part of the back-end of an audio signal processing system in a hearing-aid application. The aim in this paper...... in the interpolation filter are investigated. Proposed design simplifications presented here result in the least hardware demanding combination of oversampling ratio, number of stages and number of filter taps among a number of filters reported for audio applications....

  14. Statistical Shape Analysis of the Human Ear Canal with Application to In-the-Ear Hearing Aid Design

    DEFF Research Database (Denmark)

    Paulsen, Rasmus Reinhold

    2004-01-01

    This thesis is about the statistical shape analysis of the human ear canal with application to the mechanical design of in-the-ear hearing aids. Initially, it is described how a statistical shape model of the human ear canal is built based on a training set of laser-scanned ear impressions. A thin...... work on image restoration. It is shown how the method significantly improves the shape model. In the second part of the thesis, the shape model is used in software tools that mimic the skills of the expert hearing aid makers. The first result is that it is possible to learn an algorithm to cut an ear...... canal in order to produce an optimal in-the-ear hearing aid. Secondly, a framework for component placement using a coupling of stochastic optimisation and the results from the shape model is proposed. It is successfully, used to place the so-called faceplate with associated component on in...

  15. EVALUATION OF SOUND CLASSIFICATION USING MODIFIED CLASSIFIER AND SPEECH ENHANCEMENT USING ICA ALGORITHM FOR HEARING AID APPLICATION

    Directory of Open Access Journals (Sweden)

    N. Shanmugapriya

    2016-03-01

    Full Text Available Hearing aid users are exposed to diversified vocal scenarios. The necessity for sound classification algorithms becomes a vital factor to yield good listening experience. In this work, an approach is proposed to improve the speech quality in the hearing aids based on Independent Component Analysis (ICA algorithm with modified speech signal classification methods. The proposed algorithm has better results on speech intelligibility than other existing algorithm and this result has been proved by the intelligibility experiments. The ICA algorithm and modified Bayesian with Adaptive Neural Fuzzy Interference System (ANFIS is to effectiveness of the strategies of speech quality, thus this classification increases noise resistance of the new speech processing algorithm that proposed in this present work. This proposed work indicates that the new Modified classifier can be feasible in hearing aid applications.

  16. Physical modeling of the feedback path in hearing aids with application to adaptive feedback cancellation

    Science.gov (United States)

    Hayes, Joanna L.; Rafaely, Boaz

    2002-05-01

    Hearing aid system modeling based on two-port network theory has been used previously to study the forward gain and the feedback path in hearing aids. The two-port modeling approach is employed in this work to develop an analytic model of the feedback path by reducing the model matrices to simplified analytic expressions. Such an analytic model can simulate the frequency response of the feedback path given the values of relatively few physical parameters such as vent dimensions. The model was extended to include variability in the feedback path due to slit leaks, for example. The analytic model was then incorporated in an adaptive feedback cancellation system, where the physical parameters of the model were adapted to match the actual feedback path and cancel the feedback signal. In the initial stage of this study, the ability of the model to match the frequency response of various measured feedback paths was studied using numerical optimization. Then, an adaptive filtering configuration based on the physical model was developed and studied using computer simulations. Results show that this new approach to adaptive feedback cancellation has the potential to improve both adaptation speed and performance robustness.

  17. Working memory and hearing aid processing: Literature findings, future directions, and clinical applications

    Directory of Open Access Journals (Sweden)

    Pamela eSouza

    2015-12-01

    Full Text Available Working memory—the ability to process and store information—has been identified as an important aspect of speech perception in difficult listening environments. Working memory can be envisioned as a limited-capacity system which is engaged when an input signal cannot be readily matched to a stored representation or template. This mismatch is expected to occur more frequently when the signal is degraded. Because working memory capacity varies among individuals, those with smaller capacity are expected to demonstrate poorer speech understanding when speech is degraded, such as in background noise. However, it is less clear whether (and how working memory should influence practical decisions, such as hearing treatment. Here, we consider the relationship between working memory capacity and response to specific hearing aid processing strategies. Three types of signal processing are considered, each of which will alter the acoustic signal: fast-acting wide-dynamic range compression, which smooths the amplitude envelope of the input signal; digital noise reduction, which may inadvertently remove speech signal components as it suppresses noise; and frequency compression, which alters the relationship between spectral peaks. For fast-acting wide-dynamic range compression, a growing body of data suggests that individuals with smaller working memory capacity may be more susceptible to such signal alterations, and may receive greater amplification benefit with low alteration processing. While the evidence for a relationship between wide-dynamic range compression and working memory appears robust, the effects of working memory on perceptual response to other forms of hearing aid signal processing are less clear cut. We conclude our review with a discussion of the opportunities (and challenges in translating information on individual working memory into clinical treatment, including clinically-feasible measures of working memory.

  18. 耳聋与助听设备的选择%Deafness and Hearing Aid or Prostheses Selection

    Institute of Scientific and Technical Information of China (English)

    银力; 屠文河; 高姗仙; 童丹阳; 滕晓芳; 许泽荣; 曹永茂; 胡宝华; 曾凡钢

    2016-01-01

    When deafness occurred, the patient and their family wil face a lot of choices, including medical treatment, selection of hearing aid or prostheses, rehabilitation and so on. This paper presents the deafness classiifcation and hearing aid or prostheses selection. Selection of hearing aid or prostheses is closely related to the side, the nature and degree of deafness, such as bilateral moderate sensorineural hearing loss should ifrst consider hearing aid iftting, while profound sensorineural hearing loss should consider cochlear implants ifrst. For a beter understanding of deafness and hearing aid or prostheses, this paper wil review anatomy and physiology of ear ifrstly, then expound the classiifcation of the deafness and hearing aid or prostheses, and ifnaly match different deafness with different hearing aid or prostheses, which will help people in need choose different hearing aid or prostheses according to different deafness. User of hearing aid or prostheses should have very high motivation but appropriate expectations and keep using the device, no mater which type of hearing aid or prostheses wil be used. Besides, short term or long term of hearing and speech training should be taken according to the individual condition of the recipients. Thus, the optimal outcome may be achieved.%发生耳聋后,患者和他们的家人会面临许多选择,包括治疗、选用助听设备、康复学习等。本文就耳聋与助听设备的选择进行阐述。助听设备的选择与发生耳聋的侧别、性质和程度是密切相关的。比如双侧中度感音神经性耳聋就应首选助听器验配,而深度(极重度)感音神经性聋就应积极考虑人工耳蜗植入。为了能更好地理解耳聋和助听设备,本文先回顾耳的解剖和生理,进而讲解耳聋和助听设备的分类,最后将不同的耳聋与相应的助听设备相匹配,帮助有需要的听障人士根据其耳聋情况选取不同的助听设备。无论

  19. Feasibility of a pre-implantation fitting test for an implantable hearing aid using a VR (virtual reality) software

    International Nuclear Information System (INIS)

    Purpose: To prove the feasibility of a preoperative fitting test for an implantable hearing aid using a VR environment. Methods: A high-resolution spiral CT was performed after mastoidectomy in 10 temporal bone specimens. The bony structures were segmented and merged with the computer-aided design (CAD) data of the hearing aid in a VR environment. For each specimen a three-dimensional fitting test was carried out by three examiners determining the implantability of the hearing aid. The implantation simulation was compared with the real implantation procedure performed by an experienced ENT surgeon. Results: The used VR system enabled real-time 3D-visualisation and manipulation of CT- and CAD-data. All objects could be independently moved in all three dimensions. The VR fitting test corresponded closely with the real implantation. The implantability of the hearing aid was properly predicted by all three examiners. Conclusion: Merging CT and CAD data in a virtual reality environment bears high potential for the presurgical determination of the fit and mountability of medical implants in complex anatomical regions. (orig.)

  20. Comparison of speech intelligibility in quiet and in noise after hearing aid fitting according to a purely prescriptive and a comparative fitting procedure

    NARCIS (Netherlands)

    Metselaar, Mick; Maat, Bert; Krijnen, Pieta; Verschuure, Hans; Dreschler, Wouter; Feenstra, Louw

    2008-01-01

    We compared two different types of hearing-aid fitting procedures in a double-blind randomized clinical study. Hearing aid fittings based on a purely prescriptive procedure (the NAL-RP formula) were compared to a comparative fitting procedure based on optimizing speech intelligibility scores. Main o

  1. The advantages and disadvantages of ITC, ITE and BTE hearing aids: diary and interview reports from elderly users.

    Science.gov (United States)

    May, A E; Upfold, L J; Battaglia, J A

    1990-10-01

    The advantages and disadvantages of in-the-canal (ITC), in-the-ear (ITE) and behind-the-ear (BTE) hearing aids for elderly aid users were examined. Two hundred and forty four clients were randomly assigned to one of the three aid types from seven hearing aid manufacturers. The clients' perceived help from their fitting, and the degree of difficulty they encountered over a range of listening situations and environments were rated using a daily diary and a structured interview. Findings indicated that for elderly clients there were no large practical advantages for one aid type over another. While ITC and ITE aids were rated more highly than BTE's in background noise, all three aid types were rated as relatively poor in background noise as well as in groups, in the wind, when using the telephone and in the localisation of sound. All three aid types were rated equally and well for performance in one-to-one conversation in quiet, and for listening to television and radio. Hours of use and reasons for non-use are presented, as are clients' reports on cosmetic issues, manipulative ease and overall satisfaction level with their aids.

  2. Dilemmatic group memberships of hard-of-hearing employees during the process of acquiring and adapting to the use of hearing aids.

    Science.gov (United States)

    Koskela, Inka; Ruusuvuori, Johanna; Juvonen-Posti, Pirjo; Nevala, Nina; Husman, Päivi; Aaltonen, Tarja; Lonka, Eila; Laakso, Minna

    2016-09-01

    We describe how hard-of-hearing (HOH) employees renegotiate both their existing and new group memberships when they acquire and begin to use hearing aids (HAs). Our research setting was longitudinal and we carried out a theory-informed qualitative analysis of multiple qualitative data. When an individual discovers that they have a hearing problem and acquire a HA, their group memberships undergo change. First, HOH employees need to start negotiating their relationship with the HOH group. Second, they need to consider whether they see themselves as members of the disabled or the nondisabled employee group. This negotiation tends to be context-bound, situational, and nonlinear as a process, involving a back-and-forth movement in the way in which HOH employees value different group memberships. The dilemmatic negotiation of new group memberships and the other social aspects involved in HA rehabilitation tend to remain invisible to rehabilitation professionals, occupational healthcare, and employers. PMID:27128825

  3. Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids

    DEFF Research Database (Denmark)

    Custòdio, José; Paulino, Nuno; Goes, João;

    2008-01-01

    This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal...

  4. Multi-channel Wiener Filter for Speech Dereverberation in Hearing Aids - Sensitivity to DoA Errors

    DEFF Research Database (Denmark)

    Kuklasinski, Adam; Doclo, Simon; Jensen, Søren Holdt;

    2016-01-01

    In this paper we study the robustness of a recently proposed Multi-channel Wiener Filter-based speech dereverberation algorithm to errors in the assumed direction of arrival (DoA) of the target speech. Different subsets of microphones of a pair of behind-the-ear hearing aids are used to construct...

  5. 34 CFR 300.113 - Routine checking of hearing aids and external components of surgically implanted medical devices.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Routine checking of hearing aids and external components of surgically implanted medical devices. 300.113 Section 300.113 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION ASSISTANCE TO...

  6. Should a hearing aid in the contralateral ear be recommended for children with a unilateral cochlear implant?

    NARCIS (Netherlands)

    Beijen, J.W.; Mylanus, E.A.M.; Leeuw, A.R.; Snik, A.F.M.

    2008-01-01

    OBJECTIVES: To predict bimodal benefit before cochlear implantation, we compared the performances of participants with bimodal fitting and with a cochlear implant alone on speech perception tests. METHODS: Twenty-two children with a cochlear implant in one ear and a hearing aid in the other (bimodal

  7. Acceptable noise level (ANL) with Danish and non-semantic speech materials in adult hearing-aid users

    DEFF Research Database (Denmark)

    Olsen, Steen Østergaard; Lantz, Johannes; Nielsen, Lars Holme;

    2012-01-01

    The acceptable noise level (ANL) test is used for quantification of the amount of background noise subjects accept when listening to speech. This study investigates Danish hearing-aid users' ANL performance using Danish and non-semantic speech signals, the repeatability of ANL, and the associatio...

  8. Acceptable noise level (ANL) with Danish and non-semantic speech materials in adult hearing-aid users

    DEFF Research Database (Denmark)

    Olsen, Steen Østergaard; Lantz, Johannes; Nielsen, Lars Holme;

    2012-01-01

    The acceptable noise level (ANL) test is used for quantification of the amount of background noise subjects accept when listening to speech. This study investigates Danish hearing-aid users' ANL performance using Danish and non-semantic speech signals, the repeatability of ANL, and the association...

  9. Time-Varying Distortions of Binaural Information by Bilateral Hearing Aids

    Science.gov (United States)

    Rodriguez, Francisco A.; Portnuff, Cory D. F.; Goupell, Matthew J.; Tollin, Daniel J.

    2016-01-01

    In patients with bilateral hearing loss, the use of two hearing aids (HAs) offers the potential to restore the benefits of binaural hearing, including sound source localization and segregation. However, existing evidence suggests that bilateral HA users’ access to binaural information, namely interaural time and level differences (ITDs and ILDs), can be compromised by device processing. Our objective was to characterize the nature and magnitude of binaural distortions caused by modern digital behind-the-ear HAs using a variety of stimuli and HA program settings. Of particular interest was a common frequency-lowering algorithm known as nonlinear frequency compression, which has not previously been assessed for its effects on binaural information. A binaural beamforming algorithm was also assessed. Wide dynamic range compression was enabled in all programs. HAs were placed on a binaural manikin, and stimuli were presented from an arc of loudspeakers inside an anechoic chamber. Stimuli were broadband noise bursts, 10-Hz sinusoidally amplitude-modulated noise bursts, or consonant–vowel–consonant speech tokens. Binaural information was analyzed in terms of ITDs, ILDs, and interaural coherence, both for whole stimuli and in a time-varying sense (i.e., within a running temporal window) across four different frequency bands (1, 2, 4, and 6 kHz). Key findings were: (a) Nonlinear frequency compression caused distortions of high-frequency envelope ITDs and significantly reduced interaural coherence. (b) For modulated stimuli, all programs caused time-varying distortion of ILDs. (c) HAs altered the relationship between ITDs and ILDs, introducing large ITD–ILD conflicts in some cases. Potential perceptual consequences of measured distortions are discussed. PMID:27698258

  10. Improving misalignment for feedback path estimation in hearing aid by multiple short-time noise injections.

    Science.gov (United States)

    Khoubrouy, Soudeh A; Panahi, Issa M S

    2012-01-01

    Adaptive Feedback Cancellation (AFC) methods are used to find an FIR filter to cancel the negative effect of acoustic feedback between the loudspeaker and microphone of the hearing aid. Finding the AFC filter of appropriate order/length directly affects the performance and complexity of the system. In this paper, we use noise injection method to find the AFC filter estimating the feedback path model. We show that the optimum length which guarantees a good compromise between the quality and the complexity of the system may be smaller than the length of the actual feedback path model. However, in order to improve the performance of the system in terms of Misalignment criterion, we propose using multiple short-time noise injections and averaging method to find the best filter estimate of appropriate length. PMID:23367108

  11. Influence of the occlusion effect over the prediction-error feedback cancellation system in hearing aids.

    Science.gov (United States)

    Coelho Borges, Renata; Holsbach Costa, Marcio

    2015-08-01

    This work presents a theoretical analysis of the prediction-error method-based adaptive feedback canceller in hearing aid applications. The studied scene takes into account the occlusion effect caused by the partial or complete closing of the ventilation opening. Such a situation may occur in high gain applications to avoid undesired whistling. Deterministic recursive equations and steady-state conditions were derived for the mean weight behaviour of the predictor and the adaptive filter. The expected theoretical predictions were compared to Monte Carlo simulations, showing very accurate agreement. The simulation results suggest the steady-state performance of this feedback canceller is not affected by the occlusion effect, however the occlusion is still perceived, being annoying to the user. PMID:26736855

  12. Adaptive cancellation of variable feedback path for hearing aid using misalignment-dependent step size values.

    Science.gov (United States)

    Khoubrouy, Soudeh A; Panahi, Issa M S

    2011-01-01

    Various methods have been proposed to overcome the problem of compensating the acoustic feedback path that negatively impacts the performance of hearing aid devices. However, in most of them feedback path model is assumed to be fixed which is not quite realistic. In this paper, we consider fixed and variable feedback paths and analyze for each case the performance of one of the robust Adaptive Feedback Cancellation (AFC) schemes, i.e. the Prediction Error Method AFC which uses Partitioned Block Frequency-Domain Normalized Least Mean Square (PBFD-NLMS) algorithm. Based on the analysis results we propose varying the step size values for the same adaptive algorithm on the fly by monitoring the misalignment criteria. The experimental results using the proposed method show improvement made on the system performance. PMID:22256175

  13. Order selection of the hearing aid Feedback Canceller filter based on its impulse response energy.

    Science.gov (United States)

    Khoubrouy, Soudeh A; Panahi, Issa M S

    2012-01-01

    Numerous methods have been proposed to cancel the unpleasant effects of acoustic feedback between the loudspeaker and microphone in hearing aid systems. Adaptive Feedback Cancellation (AFC) methods are often used to estimate an FIR filter for cancelling the feedback path effect. In estimating the AFC FIR filter, it is important to select the order of the filter properly; especially when the feedback path changes from one environment to another and no knowledge about it is available. Choosing improper filter order causes deficient system performance or excessive computations and power usage in the system. We present tracking of the energy of AFC FIR filters and its convergence behavior as a new criterion for determining the proper order for AFC FIR filter. Experimental results show validity of the proposed criterion. PMID:23367105

  14. A MEMS-Based Power-Scalable Hearing Aid Analog Front End.

    Science.gov (United States)

    Deligoz, I; Naqvi, S R; Copani, T; Kiaei, S; Bakkaloglu, B; Sang-Soo Je; Junseok Chae

    2011-06-01

    A dual-channel directional digital hearing aid front end using microelectromechanical-systems microphones, and an adaptive-power analog processing signal chain are presented. The analog front end consists of a double differential amplifier-based capacitance-to-voltage conversion circuit, 40-dB variable gain amplifier (VGA) and a power-scalable continuous time sigma delta analog-to-digital converter (ADC), with 68-dB signal-to-noise ratio dissipating 67 μ W from a 1.2-V supply. The MEMS microphones are fabricated using a standard surface micromachining technology. The VGA and power-scalable ADC are fabricated on a 0.25-μ m complementary metal-oxide semciconductor TSMC process.

  15. Robust Distributed Noise Reduction in Hearing Aids with External Acoustic Sensor Nodes

    Science.gov (United States)

    Bertrand, Alexander; Moonen, Marc

    2009-12-01

    The benefit of using external acoustic sensor nodes for noise reduction in hearing aids is demonstrated in a simulated acoustic scenario with multiple sound sources. A distributed adaptive node-specific signal estimation (DANSE) algorithm, that has a reduced communication bandwidth and computational load, is evaluated. Batch-mode simulations compare the noise reduction performance of a centralized multi-channel Wiener filter (MWF) with DANSE. In the simulated scenario, DANSE is observed not to be able to achieve the same performance as its centralized MWF equivalent, although in theory both should generate the same set of filters. A modification to DANSE is proposed to increase its robustness, yielding smaller discrepancy between the performance of DANSE and the centralized MWF. Furthermore, the influence of several parameters such as the DFT size used for frequency domain processing and possible delays in the communication link between nodes is investigated.

  16. Robust Distributed Noise Reduction in Hearing Aids with External Acoustic Sensor Nodes

    Directory of Open Access Journals (Sweden)

    Marc Moonen

    2009-01-01

    Full Text Available The benefit of using external acoustic sensor nodes for noise reduction in hearing aids is demonstrated in a simulated acoustic scenario with multiple sound sources. A distributed adaptive node-specific signal estimation (DANSE algorithm, that has a reduced communication bandwidth and computational load, is evaluated. Batch-mode simulations compare the noise reduction performance of a centralized multi-channel Wiener filter (MWF with DANSE. In the simulated scenario, DANSE is observed not to be able to achieve the same performance as its centralized MWF equivalent, although in theory both should generate the same set of filters. A modification to DANSE is proposed to increase its robustness, yielding smaller discrepancy between the performance of DANSE and the centralized MWF. Furthermore, the influence of several parameters such as the DFT size used for frequency domain processing and possible delays in the communication link between nodes is investigated.

  17. Adaptive feedback cancellation in hearing aids with clipping in the feedback path.

    Science.gov (United States)

    Freed, Daniel J

    2008-03-01

    Adaptive linear filtering algorithms are commonly used to cancel feedback in hearing aids. The use of these algorithms is based on the assumption that the feedback path is linear, so nonlinearities in the feedback path may affect performance. This study investigated the effect on feedback canceller performance of clipping of the feedback signal arriving at the microphone, as well as the benefit of applying identical clipping to the cancellation signal so that the cancellation path modeled the nonlinearity of the feedback path. Feedback signal clipping limited the amount of added stable gain that the feedback canceller could provide, and caused misadjustment in response to high-level inputs, by biasing adaptive filter coefficients toward lower magnitudes. Cancellation signal clipping mitigated these negative effects, permitting higher amounts of added stable gain and less misadjustment in response to high-level inputs, but the benefit was reduced in the presence of the highest-level inputs. PMID:18345849

  18. Analysis, Design, and Evaluation of Acoustic Feedback Cancellation Systems for Hearing Aids

    DEFF Research Database (Denmark)

    Guo, Meng

    2013-01-01

    application that whereas the traditional and stateof- the-art acoustic feedback cancellation systems fail with significant sound distortions and howling as consequences, the new probe noise approach is able to remove feedback artifacts caused by the feedback path change in no more than a few hundred......Acoustic feedback problems occur when the output loudspeaker signal of an audio system is partly returned to the input microphone via an acoustic coupling through the air. This problem often causes significant performance degradations in applications such as public address systems and hearing aids....... In the worst case, the audio system becomes unstable and howling occurs. In this work, first we analyze a general multiple microphone audio processing system, where a cancellation system using adaptive filters is used to cancel the effect of acoustic feedback. We introduce and derive an accurate approximation...

  19. Prótese auditiva: satisfação do usuário com sua prótese e com seu meio ambiente Hearing aid: user satisfaction with their hearing aid and with their environment

    Directory of Open Access Journals (Sweden)

    Cleide Fernandes Teixeira

    2008-01-01

    Full Text Available OBJETIVO: avaliar o nível de satisfação dos usuários com sua prótese auditiva e com seu meio ambiente. MÉTODOS: estudo descritivo de corte transversal, com 256 indivíduos (m= 48,33%; f= 51,67%, com idade média de 50 anos, recém protetizados, com perda auditiva do tipo sensorioneural (n= 268 e mista (n=32, através do questionário de auto-avaliação International Outcome Inventory for Hearing Aids - IOI-HA para determinar o grau do benefício e a satisfação dada pela amplificação sonora. RESULTADOS: para 68% o uso da prótese melhorou a qualidade de vida, evidenciado pela alta pontuação (média=26,45. A relação do usuário com sua prótese foi significativamente melhor (pPURPOSE: to evaluate the level of user satisfaction with the hearing aids and with their environment. METHODS: cross study of a group, with 256 subjects (m= 48.33%; f= 51.67%, average age of 50 years, just fitted with their hearing aid, with sensorioneural (n=268 and mixed (n=32 hearing impairment, through the Questionnaire International Outcome Inventory for Hearing Aids Outcome Inventory - IOI-HA to determine the degree of the benefit and the satisfaction brought by the sound amplification. RESULTS: for 68% the use of the hearing aids improved their quality of life, revealed by their high punctuation (mean= 26.45. The relationship of the user with its hearing aid was significantly better (p<0.001* than that related to the environment. In the subjective evaluation of the auditory problems, 78.5% have stated to have auditory problem of light to moderate degree and 21.5% problems of moderately severe to severe. CONCLUSION: the IOI-HA is a tool, simple and easy to apply and it is used as an instrument in helping us during the period of acclimatization with the hearing aid. The improvement in the quality of life of the men that were most referred was about the satisfaction level with the hearing aid and with less impact concerning the others. The level of

  20. System-Level Power Optimization for a ΣΔ D/A Converter for Hearing-Aid Application

    DEFF Research Database (Denmark)

    Pracný, Peter; Jørgensen, Ivan Harald Holger; Bruun, Erik

    2013-01-01

    This paper deals with a system-level optimization of a back-end of audio signal processing chain for hearing-aids, including a sigma-delta modulator digital-to-analog converter (DAC) and a Class D power amplifier. Compared to other stateof-the-art designs dealing with sigma-delta modulator design...... for audio applications we take the maximum gain of the modulator noise transfer function (NTF) as a design parameter. By increasing the maximum NTF gain the cutoff frequency of modulator loop filter is increased which lowers the in-band quantization noise but also lowers the maximum stable amplitude (MSA...... hearing-aid audio back-end system resulting in less hardware and power consumption in the interpolation filter, in the sigma-delta modulator and reduced switching rate of the Class D output stage....

  1. Predictors of auditory performance in hearing-aid users: The role of cognitive function and auditory lifestyle (A)

    DEFF Research Database (Denmark)

    Vestergaard, Martin David

    2006-01-01

    was correlated with self-report outcome. However, overall the predictive leverage of the various measures was moderate, with single predictors explaining only up to 19 percent of the variance in the auditory-performance measures. a)Now at CNBH, Department of Physiology, Development and Neuroscience, University...... no objective benefit can be measured. It has been suggested that lack of agreement between various hearing-aid outcome components can be explained by individual differences in cognitive function and auditory lifestyle. We measured speech identification, self-report outcome, spectral and temporal resolution...... between objective and subjective hearing-aid outcome. Different self-report outcome measures showed a different amount of correlation with objective auditory performance. Cognitive skills were found to play a role in explaining speech performance and spectral and temporal abilities, and auditory lifestyle...

  2. 浅谈我国助听器验配师培养%Proposal on the cultivation of hearing aids fitting practitioner in China

    Institute of Scientific and Technical Information of China (English)

    康厚墉; 胡国华; 钟时勋; 李穗; 钱怡; 雷艳

    2012-01-01

    分析我国助听器验配师现状,探讨如何加快合格助听器验配师的培养.建议开设短期培训班,在职业院校开设助听器验配师专业,或分流现有的听力学、耳鼻咽喉科学专业学员等方法来加大培养力度,解决社会急需.%This paper discussed the current status of hearing aids fitting practitioners in China and proposed some proposals on how to cultivate qualified practitioners.The proposals includes setting up short-term training program,launching hearing aids fitting major in occupational schools and cultivating the hearing aids fitting practitioners from the would-be audiologists or otologists in an aim to meet the urgent hearing aids fitting need of Chinese deafness.

  3. 21 CFR 801.420 - Hearing aid devices; professional and patient labeling.

    Science.gov (United States)

    2010-04-01

    ... rapidly progressive hearing loss within the previous 90 days. (iv) Acute or chronic dizziness. (v) Unilateral hearing loss of sudden or recent onset within the previous 90 days. (vi) Audiometric air-bone gap... special training to diagnose and treat hearing loss. Such physicians are also known as...

  4. Outcome analysis of hearing aids fitting for 2 635 hearing-impaired people%2635例助听器验配情况分析

    Institute of Scientific and Technical Information of China (English)

    朱珍珍; 郑芸; 李刚

    2013-01-01

    目的:调查具备助听器适应证的患者未成功验配助听器的原因.方法:回顾性分析2005-2010年2635例患者验配助听器的资料,对其中助听器验配未验成功者的数据进行分析.结果:2 635例患者中,1 700例成功验配了助听器,验配总成功率为64.52%,验配成功率总体变化趋势为逐年上升.对935例助听器验配失败患者的数据分析结果表明,在影响助听器成功验配的众多因素中,经济因素所占比例最大(23.64%),其次是患者不接受助听器(18.61%),对专业机构的认可度及满意度(10.27%),此外患者对助听器效果不满意占8.13%.听力专科门诊的验配成功率要高于普通耳鼻咽喉科门诊(P<0.05).935例助听器验配失败的患者中年龄≥50岁者有568例;<50岁者助听器验配成功率(61.29%)低于≥50岁者(66.33%),差异有统计学意义(P<0.05).结论:针对经济因素、患者对助听器的接受程度、验配机构专业性等诸多影响助听器成功验配的重要因素,在日常工作中,助听器验配人员需要针对性地开展工作,包括加大听力康复知识的宣传力度和提高自身的专业素质和水平.只有这样,才能有效增进患者对助听器验配人员和助听器本身的信任,有效提高助听器验配成功率.%Objective: To investigate the reasons that hearing-impaired patients who owned the indication of hearing aid fitting hut were not successfully fitted. Method: Analyzing the records of hearing aid fitting for 2 635 hearing-impaired people from 2005 to 2010, especially for the people who were not successfully fitted. Result: In general, there were 1 700 people having proper hearing aids. The success rate of hearing aid fitting is 64. 52%, which increased year by year. According to the analysis of records about hearing-impaired people who were not successfully fitting, the primary factor was economic constraints(23. 64%), the second was the patients could not accept

  5. Analysis, Design, and Evaluation of Acoustic Feedback Cancellation Systems for Hearing Aids:- A Novel Approach to Unbiased Feedback Cancellation

    OpenAIRE

    Guo, Meng

    2013-01-01

    Acoustic feedback problems occur when the output loudspeaker signal of an audio systemis partly returned to the input microphone via an acoustic coupling through the air. Thisproblem often causes significant performance degradations in applications such as publicaddress systems and hearing aids. In the worst case, the audio system becomes unstableand howling occurs.In this work, first we analyze a general multiple microphone audio processing system,where a cancellation system using adaptive f...

  6. Acoustic analysis of the directional information captured by five different hearing aid styles.

    Science.gov (United States)

    Durin, Virginie; Carlile, Simon; Guillon, Pierre; Best, Virginia; Kalluri, Sridhar

    2014-08-01

    This study compared the head-related transfer functions (HRTFs) recorded from the bare ear of a mannequin for 393 spatial locations and for five different hearing aid styles: Invisible-in-the-canal (IIC), completely-in-the-canal (CIC), in-the-canal (ITC), in-the-ear (ITE), and behind-the-ear (BTE). The spectral distortions of each style compared to the bare ear were described qualitatively in terms of the gain and frequency characteristics of the prominent spectral notch and two peaks in the HRTFs. Two quantitative measures of the differences between the HRTF sets and a measure of the dissimilarity of the HRTFs within each set were also computed. In general, the IIC style was most similar and the BTE most dissimilar to the bare ear recordings. The relative similarities among the CIC, ITC, and ITE styles depended on the metric employed. The within-style spectral dissimilarities were comparable for the bare ear, IIC, CIC, and ITC with increasing ambiguity for the ITE and BTE styles. When the analysis bandwidth was limited to 8 kHz, the HRTFs within each set became much more similar.

  7. Challenges and Recent Developments in Hearing Aids: Part II. Feedback and Occlusion Effect Reduction Strategies, Laser Shell Manufacturing Processes, and Other Signal Processing Technologies

    OpenAIRE

    Chung, King

    2004-01-01

    This is the second part of a review on the challenges and recent developments in hearing aids. Feedback and the occlusion effect pose great challenges in hearing aid design and usage. Yet, conventional solutions to feedback and the occlusion effect often create a dilemma: the solution to one often leads to the other. This review discusses the advanced signal processing strategies to reduce feedback and some new approaches to reduce the occlusion effect. Specifically, the causes of three types...

  8. A hearing aid on-chip system based on accuracy optimized front- and back-end blocks

    International Nuclear Information System (INIS)

    A hearing aid on-chip system based on accuracy optimized front- and back-end blocks is presented for enhancing the signal processing accuracy of the hearing aid. Compared with the conventional system, the accuracy optimized system is characterized by the dual feedback network and the gain compensation technique used in the front- and back-end blocks, respectively, so as to alleviate the nonlinearity distortion caused by the output swing. By using the technique, the accuracy of the whole hearing aid system can be significantly improved. The prototype chip has been designed with a 0.13 μm standard CMOS process and tested with 1 V supply voltage. The measurement results show that, for driving a 16 Ω loudspeaker with a normalized output level of 300 mVp-p, the total harmonic distortion reached about −60 dB, achieving at least three times reduction compared to the previously reported works. In addition, the typical input referred noise is only about 5 μVrms. (semiconductor integrated circuits)

  9. A hearing aid on-chip system based on accuracy optimized front- and back-end blocks

    Science.gov (United States)

    Fanyang, Li; Hao, Jiang

    2014-03-01

    A hearing aid on-chip system based on accuracy optimized front- and back-end blocks is presented for enhancing the signal processing accuracy of the hearing aid. Compared with the conventional system, the accuracy optimized system is characterized by the dual feedback network and the gain compensation technique used in the front- and back-end blocks, respectively, so as to alleviate the nonlinearity distortion caused by the output swing. By using the technique, the accuracy of the whole hearing aid system can be significantly improved. The prototype chip has been designed with a 0.13 μm standard CMOS process and tested with 1 V supply voltage. The measurement results show that, for driving a 16 Ω loudspeaker with a normalized output level of 300 mVp-p, the total harmonic distortion reached about -60 dB, achieving at least three times reduction compared to the previously reported works. In addition, the typical input referred noise is only about 5 μVrms.

  10. 感音神经性听力损失患者助听后言语感知能力的评价%Speech perception performance in patients with sensorineural hearing impairment aided with hearing aids

    Institute of Scientific and Technical Information of China (English)

    王硕; 董瑞娟; Solveig Christina Voss; 钱金宇; 吴燕君; 张华

    2015-01-01

    目的:本研究对感音神经性听力损失患者助听器选配后的言语识别能力进行评价,并分析听力损失程度与年龄对助听后言语康复效果的影响。方法30名感音神经性听力损失受试者,男13名,女17名,年龄26-86岁,双侧听力损失程度对称,双耳0.5-4 kHz频率下纯音听力阈值(PTA0.5-4 kHz)平均值40~75 dB HL。所有受试者均选配Phonak Bolero Q50系列耳背式助听器。使用汉语普通话言语测试软件(Mandarin Speech Test Materials, MSTMs)进行裸耳和助听后安静与噪声环境下言语识别能力测试。结果(1)助听后,安静环境下的双音节识别率平均提高35.1±19.5%;噪声环境下语句识别率平均提高32.8±22.8%;(2)助听后言语识别能力与听力损失程度呈显著负相关关系;(3)助听优势高于平均水平的受试者纯音听阈均大于50 dB HL,但存在个体差异大的特点。结论助听器选配可以有效帮助感音神经性听力损失患者提高言语识别能力,但听力损失程度不是唯一影响助听效果的因素,助听后言语识别能力的改善存在较大个体差异。%Objective This study was aimed at evaluating the speech perception performance in sensorineural hear-ing-impaired listeners with hearing aids. Methods Thirty subjects with sensorineural hearing loss were recruited, including 13 males and 17 females with the age ranging from 26 to 86 years. They had bilaterally symmetric hearing loss with the av-eraged 0.5-4 kHz PTA ranging from 40 to 75 dB HL. They were fitted with Phonak Bolero Q50 BTE hearing aids unilaterally. The Mandarin Speech Test Materials (MSTMs) software was used to test speech perception performance under four condi-tions, including unaided quiet, aided quiet, unaided noisy and aided noisy environments. Results (1) After fitting hearing aids, the speech perception score in quiet using bisyllabic materials improved by 35.1±19.5%in average

  11. Comparison of hearing thresholds obtained with Baha preoperative assessment tools and those obtained with the osseointegrated implant.

    Science.gov (United States)

    Heywood, Rebecca L; Patel, Parag M; Jonathan, David A

    2011-05-01

    We conducted a study of the Baha bone-anchored hearing aid system to quantify the difference between (1) hearing thresholds obtained through preoperative testing methods with the Baha sound processor attached to three different bone-conduction testing devices and (2) thresholds obtained postoperatively with the sound processor attached to a surgically placed osseointegrated titanium implant. Twenty-three patients underwent free-field testing in four situations: with the Baha sound processor attached to (1) the Baha Testband (transcutaneous transmission), (2) the Baha Softband (transcutaneous transmission), (3) a test rod (bone conduction via the teeth), and (4) the osseointegrated implant (percutaneous transmission). The main outcome measure was the result of a comparison of the thresholds obtained with the three preoperative test methods and those obtained with the osseointegrated implant. We found that aided thresholds obtained with the osseointegrated implant were significantly better (p damping effect of sound transmission via the teeth or transcutaneously must be accounted for in making predictions of postoperative outcome. PMID:21563076

  12. Challenges and recent developments in hearing aids. Part II. Feedback and occlusion effect reduction strategies, laser shell manufacturing processes, and other signal processing technologies.

    Science.gov (United States)

    Chung, King

    2004-01-01

    This is the second part of a review on the challenges and recent developments in hearing aids. Feedback and the occlusion effect pose great challenges in hearing aid design and usage. Yet, conventional solutions to feedback and the occlusion effect often create a dilemma: the solution to one often leads to the other. This review discusses the advanced signal processing strategies to reduce feedback and some new approaches to reduce the occlusion effect. Specifically, the causes of three types of feedback (acoustic, mechanical, and electromagnetic) are discussed. The strategies currently used to reduce acoustic feedback (i.e., adaptive feedback reduction algorithms using adaptive gain reduction, notch filtering, and phase cancellation strategies) and the design of new receivers that are built to reduce mechanical and electromagnetic feedback are explained. In addition, various new strategies (i.e., redesigned sound delivery devices and receiver-in-the-ear-canal hearing aid configuration) to reduce the occlusion effect are reviewed. Many manufacturers have recently adopted laser shell-manufacturing technologies to overcome problems associated with manufacturing custom hearing aid shells. The mechanisms of selected laser sintering and stereo lithographic apparatus and the properties of custom shells produced by these two processes are reviewed. Further, various new developments in hearing aid transducers, telecoils, channel-free amplification, open-platform programming options, rechargeable hearing aids, ear-level frequency modulated (FM) receivers, wireless Bluetooth FM systems, and wireless programming options are briefly explained and discussed. Finally, the applications of advanced hearing aid technologies to enhance other devices such as cochlear implants, hearing protectors, and cellular phones are discussed. PMID:15735871

  13. Audio-visual speechreading in a group of hearing aid users. The effects of onset age, handicap age, and degree of hearing loss.

    Science.gov (United States)

    Tillberg, I; Rönnberg, J; Svärd, I; Ahlner, B

    1996-01-01

    Speechreading ability was investigated among hearing aid users with different time of onset and different degree of hearing loss. Audio-visual and visual-only performance were assessed. One group of subjects had been hearing-impaired for a large part of their lives, and the impairments appeared early in life. The other group of subjects had been impaired for a fewer number of years, and the impairments appeared later in life. Differences between the groups were obtained. There was no significant difference on the audio-visual test between the groups in spite of the fact that the early onset group scored very poorly auditorily. However, the early-onset group performed significantly better on the visual test. It was concluded that the visual information constituted the dominant coding strategy for the early onset group. An interpretation chiefly in terms of early onset may be the most appropriate, since dB loss variations as such are not related to speechreading skill. PMID:8976000

  14. Comparison of Gated Audiovisual Speech Identification in Elderly Hearing Aid Users and Elderly Normal-Hearing Individuals: Effects of Adding Visual Cues to Auditory Speech Stimuli.

    Science.gov (United States)

    Moradi, Shahram; Lidestam, Björn; Rönnberg, Jerker

    2016-06-17

    The present study compared elderly hearing aid (EHA) users (n = 20) with elderly normal-hearing (ENH) listeners (n = 20) in terms of isolation points (IPs, the shortest time required for correct identification of a speech stimulus) and accuracy of audiovisual gated speech stimuli (consonants, words, and final words in highly and less predictable sentences) presented in silence. In addition, we compared the IPs of audiovisual speech stimuli from the present study with auditory ones extracted from a previous study, to determine the impact of the addition of visual cues. Both participant groups achieved ceiling levels in terms of accuracy in the audiovisual identification of gated speech stimuli; however, the EHA group needed longer IPs for the audiovisual identification of consonants and words. The benefit of adding visual cues to auditory speech stimuli was more evident in the EHA group, as audiovisual presentation significantly shortened the IPs for consonants, words, and final words in less predictable sentences; in the ENH group, audiovisual presentation only shortened the IPs for consonants and words. In conclusion, although the audiovisual benefit was greater for EHA group, this group had inferior performance compared with the ENH group in terms of IPs when supportive semantic context was lacking. Consequently, EHA users needed the initial part of the audiovisual speech signal to be longer than did their counterparts with normal hearing to reach the same level of accuracy in the absence of a semantic context.

  15. Audio-visual speechreading in a group of hearing aid users. The effects of onset age, handicap age, and degree of hearing loss.

    Science.gov (United States)

    Tillberg, I; Rönnberg, J; Svärd, I; Ahlner, B

    1996-01-01

    Speechreading ability was investigated among hearing aid users with different time of onset and different degree of hearing loss. Audio-visual and visual-only performance were assessed. One group of subjects had been hearing-impaired for a large part of their lives, and the impairments appeared early in life. The other group of subjects had been impaired for a fewer number of years, and the impairments appeared later in life. Differences between the groups were obtained. There was no significant difference on the audio-visual test between the groups in spite of the fact that the early onset group scored very poorly auditorily. However, the early-onset group performed significantly better on the visual test. It was concluded that the visual information constituted the dominant coding strategy for the early onset group. An interpretation chiefly in terms of early onset may be the most appropriate, since dB loss variations as such are not related to speechreading skill.

  16. Enhancement of tendon–bone healing via the combination of biodegradable collagen-loaded nanofibrous membranes and a three-dimensional printed bone-anchoring bolt

    Directory of Open Access Journals (Sweden)

    Chou YC

    2016-08-01

    Full Text Available Ying-Chao Chou,1,2 Wen-Lin Yeh,2 Chien-Lin Chao,1 Yung-Heng Hsu,1,2 Yi-Hsun Yu,1,2 Jan-Kan Chen,3 Shih-Jung Liu1,2 1Department of Mechanical Engineering, Chang Gung University, 2Department of Orthopedic Surgery, Chang Gung Memorial Hospital, 3Department of Physiology and Pharmacology, Chang Gung University, Taoyuan, Taiwan Abstract: A composite biodegradable polymeric model was developed to enhance tendon graft healing. This model included a biodegradable polylactide (PLA bolt as the bone anchor and a poly(D,L-lactide-co-glycolide (PLGA nanofibrous membrane embedded with collagen as a biomimic patch to promote tendon–bone interface integration. Degradation rate and compressive strength of the PLA bolt were measured after immersion in a buffer solution for 3 months. In vitro biochemical characteristics and the nanofibrous matrix were assessed using a water contact angle analyzer, pH meter, and tetrazolium reduction assay. In vivo efficacies of PLGA/collagen nanofibers and PLA bolts for tendon–bone healing were investigated on a rabbit bone tunnel model with histological and tendon pullout tests. The PLGA/collagen-blended nanofibrous membrane was a hydrophilic, stable, and biocompatible scaffold. The PLA bolt was durable for tendon–bone anchoring. Histology showed adequate biocompatibility of the PLA bolt on a medial cortex with progressive bone ingrowth and without tissue overreaction. PLGA nanofibers within the bone tunnel also decreased the tunnel enlargement phenomenon and enhanced tendon–bone integration. Composite polymers of the PLA bolt and PLGA/collagen nanofibrous membrane can effectively promote outcomes of tendon reconstruction in a rabbit model. The composite biodegradable polymeric system may be useful in humans for tendon reconstruction. Keywords: polylactide–polyglycolide nanofibers, PLGA, collagen, 3D printing, polylactide, PLA, bone-anchoring bolts, tendon healing

  17. Investigating Differences in Preferred Noise Reduction Strength Among Hearing Aid Users

    Science.gov (United States)

    Wagener, Kirsten C.

    2016-01-01

    Even though hearing aid (HA) users can respond very differently to noise reduction (NR) processing, knowledge about possible drivers of this variability (and thus ways of addressing it in HA fittings) is sparse. The current study investigated differences in preferred NR strength among HA users. Participants were groups of experienced users with clear preferences (“NR lovers”; N = 14) or dislikes (“NR haters”; N = 13) for strong NR processing, as determined in two earlier studies. Maximally acceptable background noise levels, detection thresholds for speech distortions caused by NR processing, and self-reported “sound personality” traits were considered as candidate measures for explaining group membership. Participants also adjusted the strength of the (binaural coherence-based) NR algorithm to their preferred level. Consistent with previous findings, NR lovers favored stronger processing than NR haters, although there also was some overlap. While maximally acceptable noise levels and detection thresholds for speech distortions tended to be higher for NR lovers than for NR haters, group differences were only marginally significant. No clear group differences were observed in the self-report data. Taken together, these results indicate that preferred NR strength is an individual trait that is fairly stable across time and that is not easily captured by psychoacoustic, audiological, or self-report measures aimed at indexing susceptibility to background noise and processing artifacts. To achieve more personalized NR processing, an effective approach may be to let HA users determine the optimal setting themselves during the fitting process. PMID:27604781

  18. Investigating Differences in Preferred Noise Reduction Strength Among Hearing Aid Users

    Directory of Open Access Journals (Sweden)

    Tobias Neher

    2016-06-01

    Full Text Available Even though hearing aid (HA users can respond very differently to noise reduction (NR processing, knowledge about possible drivers of this variability (and thus ways of addressing it in HA fittings is sparse. The current study investigated differences in preferred NR strength among HA users. Participants were groups of experienced users with clear preferences (“NR lovers”; N = 14 or dislikes (“NR haters”; N = 13 for strong NR processing, as determined in two earlier studies. Maximally acceptable background noise levels, detection thresholds for speech distortions caused by NR processing, and self-reported “sound personality” traits were considered as candidate measures for explaining group membership. Participants also adjusted the strength of the (binaural coherence-based NR algorithm to their preferred level. Consistent with previous findings, NR lovers favored stronger processing than NR haters, although there also was some overlap. While maximally acceptable noise levels and detection thresholds for speech distortions tended to be higher for NR lovers than for NR haters, group differences were only marginally significant. No clear group differences were observed in the self-report data. Taken together, these results indicate that preferred NR strength is an individual trait that is fairly stable across time and that is not easily captured by psychoacoustic, audiological, or self-report measures aimed at indexing susceptibility to background noise and processing artifacts. To achieve more personalized NR processing, an effective approach may be to let HA users determine the optimal setting themselves during the fitting process.

  19. The Speech Intelligibility Index and the Pure-Tone Average as Predictors of Lexical Ability in Children Fit with Hearing Aids

    Science.gov (United States)

    Stiles, Derek J.; Bentler, Ruth A.; McGregor, Karla K.

    2012-01-01

    Purpose: To determine whether a clinically obtainable measure of audibility, the aided Speech Intelligibility Index (SII; American National Standards Institute, 2007), is more sensitive than the pure-tone average (PTA) at predicting the lexical abilities of children who wear hearing aids (CHA). Method: School-age CHA and age-matched children with…

  20. Development and Evaluation of Computer-Aided Music-Learning System for the Hearing Impaired

    Science.gov (United States)

    Yang, H.-J.; Lay, Y.-L.; Liou, Y.-C.; Tsao, W.-Y.; Lin, C.-K.

    2007-01-01

    A computer-assisted music-learning system (CAMLS) has been developed to help the hearing impaired practice playing a musical melody. The music-learning performance is evaluated to test the usability of the system. This system can be a computer-supported learning tool for the hearing impaired to help them understand what pitch and tempo are, and…

  1. Age-Related Hearing Loss

    Science.gov (United States)

    ... hearing loss. Here are the most common ones: Styles of hearing aids Source: NIH/NIDCD Hearing aids ... list of organizations, contact: NIDCD Information Clearinghouse 1 Communication Avenue Bethesda, MD 20892-3456 Toll-free Voice: ( ...

  2. Enhancement of tendon–bone healing via the combination of biodegradable collagen-loaded nanofibrous membranes and a three-dimensional printed bone-anchoring bolt

    Science.gov (United States)

    Chou, Ying-Chao; Yeh, Wen-Lin; Chao, Chien-Lin; Hsu, Yung-Heng; Yu, Yi-Hsun; Chen, Jan-Kan; Liu, Shih-Jung

    2016-01-01

    A composite biodegradable polymeric model was developed to enhance tendon graft healing. This model included a biodegradable polylactide (PLA) bolt as the bone anchor and a poly(D,L-lactide-co-glycolide) (PLGA) nanofibrous membrane embedded with collagen as a biomimic patch to promote tendon–bone interface integration. Degradation rate and compressive strength of the PLA bolt were measured after immersion in a buffer solution for 3 months. In vitro biochemical characteristics and the nanofibrous matrix were assessed using a water contact angle analyzer, pH meter, and tetrazolium reduction assay. In vivo efficacies of PLGA/collagen nanofibers and PLA bolts for tendon–bone healing were investigated on a rabbit bone tunnel model with histological and tendon pullout tests. The PLGA/collagen-blended nanofibrous membrane was a hydrophilic, stable, and biocompatible scaffold. The PLA bolt was durable for tendon–bone anchoring. Histology showed adequate biocompatibility of the PLA bolt on a medial cortex with progressive bone ingrowth and without tissue overreaction. PLGA nanofibers within the bone tunnel also decreased the tunnel enlargement phenomenon and enhanced tendon–bone integration. Composite polymers of the PLA bolt and PLGA/collagen nanofibrous membrane can effectively promote outcomes of tendon reconstruction in a rabbit model. The composite biodegradable polymeric system may be useful in humans for tendon reconstruction. PMID:27601901

  3. Enhancement of tendon-bone healing via the combination of biodegradable collagen-loaded nanofibrous membranes and a three-dimensional printed bone-anchoring bolt.

    Science.gov (United States)

    Chou, Ying-Chao; Yeh, Wen-Lin; Chao, Chien-Lin; Hsu, Yung-Heng; Yu, Yi-Hsun; Chen, Jan-Kan; Liu, Shih-Jung

    2016-01-01

    A composite biodegradable polymeric model was developed to enhance tendon graft healing. This model included a biodegradable polylactide (PLA) bolt as the bone anchor and a poly(D,L-lactide-co-glycolide) (PLGA) nanofibrous membrane embedded with collagen as a biomimic patch to promote tendon-bone interface integration. Degradation rate and compressive strength of the PLA bolt were measured after immersion in a buffer solution for 3 months. In vitro biochemical characteristics and the nanofibrous matrix were assessed using a water contact angle analyzer, pH meter, and tetrazolium reduction assay. In vivo efficacies of PLGA/collagen nanofibers and PLA bolts for tendon-bone healing were investigated on a rabbit bone tunnel model with histological and tendon pullout tests. The PLGA/collagen-blended nanofibrous membrane was a hydrophilic, stable, and biocompatible scaffold. The PLA bolt was durable for tendon-bone anchoring. Histology showed adequate biocompatibility of the PLA bolt on a medial cortex with progressive bone ingrowth and without tissue overreaction. PLGA nanofibers within the bone tunnel also decreased the tunnel enlargement phenomenon and enhanced tendon-bone integration. Composite polymers of the PLA bolt and PLGA/collagen nanofibrous membrane can effectively promote outcomes of tendon reconstruction in a rabbit model. The composite biodegradable polymeric system may be useful in humans for tendon reconstruction. PMID:27601901

  4. ∑∆ Modulator System-Level Considerations for Hearing-Aid Audio Class-D Output Stage Application

    DEFF Research Database (Denmark)

    Pracný, Peter; Bruun, Erik

    2012-01-01

    - order, oversampling ratio (OSR) and number of bits in the quantizer - including their impact on interpolation filter design as well. The system is kept in digital domain up to the input of the Class D power stage including the digital pulse width modulation (DPWM) block. Notes on the impact of the DPWM......This paper deals with a system-level design of a digital sigma-delta (∑∆) modulator for hearing-aid audio Class D output stage application. The aim of this paper is to provide a thorough discussion on various possibilities and tradeoffs of ∑∆ modulator system-level design parameter combinations...

  5. The effect of using integrated signal processing hearing aids on the speech recognition abilities of hearing impaired Arabic-speaking children

    Directory of Open Access Journals (Sweden)

    Somaia Tawfik

    2014-11-01

    Results and conclusions: Significant improvement in aided sound field threshold levels and speech recognition in noise tests was recorded using ISP HAs over time. As regards consonant manner, glides and stop consonants showed the highest improvement. Though voiced and voiceless consonants were equally transmitted through digital HAs, voiced consonants were easier to perceive using ISP HAs. Middle and back consonants were easier to perceive compared to front consonants using both HAs. Application of WILSI self assessment questionnaire revealed that parents reported better performance in different listening situations. In conclusion, results of the present study support the use of ISP HAs in children with moderate to severe hearing loss due to the significant improvement recorded in both subjective and objective measures.

  6. A Descriptive Study of the Audiograms and Hearing Aid Prescription Papers of Veterans

    Directory of Open Access Journals (Sweden)

    Khosro Gourabi

    1999-03-01

    Full Text Available In the current investigation we gathered information about the hearing thresholds, types of hearing loss, types of tinnitus, and also the prescribed tinnitus maskers for the veterans. We were aimed at determining the percentage of tinnitus, audiogram shape and its relationship with tinnitus, and the percentages of veterans using tinnitus maskers. The needed information was prepared by studying the audiograms and file of the patients. The results of the investigation have been prepared here in details.

  7. Computer-assisted reading intervention with a phonics approach for children using cochlear implants or hearing aids.

    Science.gov (United States)

    Nakeva von Mentzer, Cecilia; Lyxell, Björn; Sahlén, Birgitta; Dahlström, Orjan; Lindgren, Magnus; Ors, Marianne; Kallioinen, Petter; Uhlén, Inger

    2014-10-01

    The present study examined computer-assisted reading intervention with a phonics approach for deaf and hard of hearing (DHH) children in Sweden using cochlear implants or hearing aids, or a combination of both. The study included 48 children, 5, 6 and 7 years of age. Sixteen children with normal hearing (NH) served as a reference group. The first purpose of the study was to compare NH and DHH children's reading ability at pre and post-intervention. The second purpose was to investigate effects of the intervention. Cognitive and demographic factors were analyzed in relation to reading improvement. Results showed no statistically significant difference for reading ability at the group level, although NH children showed overall higher reading scores at both test points. Age comparisons revealed a statistically significant higher reading ability in the NH 7-year-olds compared to the DHH 7-year-olds. The intervention proved successful for word decoding accuracy, passage comprehension and as a reduction of nonword decoding errors in both NH and DHH children. Reading improvement was associated with complex working memory and phonological processing skills in NH children. Correspondent associations were observed with visual working memory and letter knowledge in the DHH children. Age was the only demographic factor that was significantly correlated with reading improvement. The results suggest that DHH children's beginning reading may be influenced by visual strategies that might explain the reading delay in the older children.

  8. A laboratory study on a capacitive displacement sensor as an implant microphone in totally implant cochlear hearing aid systems.

    Science.gov (United States)

    Huang, Ping; Guo, Jun; Megerian, Cliff A; Young, Darrin J; Ko, Wen H

    2007-01-01

    A totally implant cochlear hearing aids system, integrating an implant microphone, interface electronics, a speech processor, a stimulator, and cochlear electrodes, can overcome the uncomfortable, inconvenient, and stigma problems associated with the conventional and semi-implantable hearing aids. This paper presents a laboratory feasibility study on the use of an electret condenser microphone (ECM) displacement sensor, serving as an implant microphone, and combined with a spring coupler to directly sense the umbo acoustic vibration. The umbo vibration characteristics were extracted from literature to determine the coupler and sensor requirements. A laboratory model was built to simulate the vibration source and experimentally study the transmission coefficient. Experimental data demonstrate that by using a 5 N/m stiffness spring, the umbo vibration amplitude as high as 67% can be transmitted to the sensor. Measurement of the sensor system on the temporal bone was also made. The minimum detectable sound pressure level (SPL) at 1 kHz is 41 and 67 dB for laboratory and 38 and 64 dB for temporal bone measurement for 1 and 388 Hz bandwidth, respectively. Better performance was achieved in a higher frequency. Results and analysis of this study can be used as a guideline for the future design of displacement sensors as implant microphones. PMID:18003304

  9. Hearing aid application performance evaluation questionnaire to presbycusis%老年性聋助听器选配效果评估问卷的应用

    Institute of Scientific and Technical Information of China (English)

    陈向红; 周慧芳; 张静; 王立群

    2011-01-01

    Objective:By matching patients with presbycusis hearing aids,hearing aid performance assessment questionnaire to fill out to assess the effect of its use and targeted to solve problems encountered in its use and improve the quality of life of older persons. Method:Through face to face way to investigate and analyse patients with hearing aids fitting,totally 30 subjects aeecpted the analysis, preliminary assessment of the use of hearing aids in patient with presbycusis results and solve problems encountered in its use by using SPSS software to analyze the collecting data. Result: HHIE questionnaire on statistical analysis, obtained in patients with hearing loss use hearing aids after the problem is a significant improvement statistical analysis of the SADL questionnaire, the conclusion is relatively satisfied with the overall satisfaction. Conclusion: Effects Assessment Questionnaire in patients with hearing aids hearing impairment can be epitomized the disabled after use to improve the situation and understand the satisfaction of patients with hearing aids can be an initial effect as the rehabilitation of a reliable subjective assessment of the impact assessment indicators.%目的:通过对已选配助听器的老年性聋患者进行助听器效果评估问卷的填写,评估其使用效果并有针对性地解决其使用中遇到的问题,提高老年人的生活质量.方法:通过面对面的方式对30例助听器验配患者进行调查和分析.应用SPSS统计学软件分析,初步评估老年性聋患者助听器的使用效果和解决其使用中遇到的问题.结果:调查结果得出老年性聋患者听力障碍问题得到显著改善,对选配的助听器总体比较满意,且听力障碍问题的改善与满意度随时间的延长持续提高.结论:效果评估问卷可以集中反映听力障碍患者助听器使用后的残障改善情况和了解患者使用助听器的满意度,可初步作为康复效果评估的一个可靠主观效果评估指标.

  10. Development of a voice database to aid children with hearing impairments

    International Nuclear Information System (INIS)

    In the development of software for voice analysis or training, for people with hearing impairments, a database having sounds of properly pronounced words is of paramount importance. This paper shows the advantage that will be obtained from getting an own voice database, rather than using those coming from other countries, even having the same language, in the development of speech training software aimed to people with hearing impairments. This database will be used by software developers at the School of Engineering of Mar del Plata National University.

  11. Development of a voice database to aid children with hearing impairments

    Science.gov (United States)

    Kuzman, M. G.; Agüero, P. D.; Tulli, J. C.; Gonzalez, E. L.; Uriz, A. J.; Cervellini, M. P.

    2011-12-01

    In the development of software for voice analysis or training, for people with hearing impairments, a database having sounds of properly pronounced words is of paramount importance. This paper shows the advantage that will be obtained from getting an own voice database, rather than using those coming from other countries, even having the same language, in the development of speech training software aimed to people with hearing impairments. This database will be used by software developers at the School of Engineering of Mar del Plata National University.

  12. 75 FR 54546 - Amendment of the Commission's Rules Governing Hearing Aid-Compatible Mobile Handsets

    Science.gov (United States)

    2010-09-08

    ... in our society. Given the rapid pace of technological innovation and the development of new modes of... whether considerations of technological feasibility or marketability prevent application of its hearing... with continuing access to the most advanced and innovative communications technologies as they...

  13. [A totally implantable hearing aid for inner ear deafness: TICA LZ 3001].

    Science.gov (United States)

    Leysieffer, H; Baumann, J W; Mayer, R; Müller, D; Müller, G; Schön, T; Volz, A; Zenner, H P

    1998-10-01

    Recently, Zenner et al. implanted the first totally implantable electronic hearing devices in patients with SNHL (HNO 46 [1998] 844-852). In the present report, technical and audiological features of the implant TICA are published. The development of the piezoelectric transducer and the microphone for implantation in the posterior wall of the auditory canal as components for the present fully implantable hearing system has already been described (HNO 45, 1997, 792-880). Here we report about our experience with the electronic main module that completes the TICA LZ 3001 system. This module is suited for implantation in the mastoid bone and contains the signal-processing electronics and an integrated battery that can be recharged transcutaneously with a portable charger. The recharging time is around 2 h for an implant operating time of 50 h. The microphone and transducer connectors allow for easy replacement of the main module when the battery lifetime is reached. This lifetime is around 3-5 years. A small wireless remote control allows volume adjustment, contains an on/off switch, and permits selection of four different individual hearing programs. The basic audiological features are provided by a flexible, digitally programmable 3-channel-AGC-system with a peak clipping function. The total bandwidth is around 10 kHz. To our knowledge this is the first fully implantable hearing system that has been in implanted in humans.

  14. Relating hearing loss and executive functions to hearing aid users’ preference for, and speech recognition with, different combinations of binaural noise reduction and microphone directionality

    Directory of Open Access Journals (Sweden)

    Tobias eNeher

    2014-12-01

    Full Text Available Knowledge of how executive functions relate to preferred hearing aid (HA processing is sparse and seemingly inconsistent with related knowledge for speech recognition outcomes. This study thus aimed to find out if (1 performance on a measure of reading span (RS is related to preferred binaural noise reduction (NR strength, (2 similar relations exist for two different, nonverbal measures of executive function, (3 pure-tone average hearing loss (PTA, signal-to-noise ratio (SNR, and microphone directionality (DIR also influence preferred NR strength, and (4 preference and speech recognition outcomes are similar. Sixty elderly HA users took part. Six HA conditions consisting of omnidirectional or cardioid microphones followed by inactive, moderate, or strong binaural NR as well as linear amplification were tested. Outcome was assessed at fixed SNRs using headphone simulations of a frontal target talker in a busy cafeteria. Analyses showed positive effects of active NR and DIR on preference, and negative and positive effects of, respectively, strong NR and DIR on speech recognition. Also, while moderate NR was the most preferred NR setting overall, preference for strong NR increased with SNR. No relation between RS and preference was found. However, larger PTA was related to weaker preference for inactive NR and stronger preference for strong NR for both microphone modes. Equivalent (but weaker relations between worse performance on one nonverbal measure of executive function and the HA conditions without DIR were found. For speech recognition, there were relations between HA condition, PTA, and RS, but their pattern differed from that for preference. Altogether, these results indicate that, while moderate NR works well in general, a notable proportion of HA users prefer stronger NR. Furthermore, PTA and executive functions can account for some of the variability in preference for, and speech recognition with, different binaural NR and DIR settings.

  15. 骨导助听技术研究与应用进展%Advance in research and application of bone conduction hearing aid technology

    Institute of Scientific and Technical Information of China (English)

    艾海明; 郭红阳; 王杰

    2016-01-01

    Hearing aid techniques consist of air conduction and bone conduction in terms of sound transmission pathway. On the bone conduction, the sound signal vibrating the skull and transmitting it into the inner ear directly rather than by the outer and middle ear sequentially. By the bone conduction-hearing mechanism, ambient noise interference can be effectively prevented, so that the bone conduction technology is an alternative hearing aid modality for hearing-impaired subjects. This paper mainly reviewed updating research of bone conduction on hearing aid techniques, core algorithm development and clinical application, which aims to enhance the development of bone conduction technology and to promote its clinical application.%助听技术按传导径路可分为气导与骨导两类。骨传导声音信号通过振动颅骨,不经过外耳、中耳而直接传递至内耳,可有效防止外界环境噪声干扰,为听力障碍者提供一种可选的可靠助听方式。本文主要通过对现今骨传导助听技术研究现状、核心算法开发和应用场景等进行综述,旨在促进此项技术发展及推广临床应用。

  16. Unilateral hearing loss: benefits and satisfaction from the use of hearing aids Perda auditiva unilateral: benefício e satisfação com o uso do AASI

    Directory of Open Access Journals (Sweden)

    Maria Renata José

    2011-04-01

    Full Text Available A unilateral hearing loss is characterized by reduced hearing in one ear. The problems caused by sensory deprivation can be minimized with the use of hearing aids (HA. AIM: To analyze the correlation between the prescribed grain and the insertion gain difference and with the results obtained regarding the benefit and satisfaction with the use of hearing aids in unilateral hearing impaired patients. MATERIALS AND METHODS: Prospective study with 15 subjects, mean age of 41.6 years, of both genders, users of hearing aids effectively. We used the International Questionnaire Results for hearing aids (International Outcome Inventory for Hearing Aids - IOI-HA, measured with a probe microphone. RESULTS: The mean values in the analyses of the IOI-HA per item were positive and higher than four points. In relation to the objective measures, the frequencies in which we obtained the gain values which were closer to the target were: 1K Hz, 2K Hz and 500 Hz, respectively. CONCLUSION: The satisfaction of individuals using hearing aid unilaterally is not completely correlated to the prescribed gain, because even if the target is not being reached in some frequencies, the individuals were pleased as to the use of their hearing aids.Aperda auditiva unilateral é caracterizada pela diminuição da audição em apenas uma orelha. Os problemas acometidos pela privação sensorial podem ser minimizados com o uso do Aparelho de Amplificação Sonora individual (AASI. OBJETIVO: Analisar a correlação entre a diferença do ganho prescrito e ganho de inserção com os resultados obtidos em relação ao benefício e a satisfação quanto ao uso do AASI por pacientes deficientes auditivos unilaterais. MATERIAL E MÉTODO: Estudo prospectivo, com 15 indivíduos, com média de idade de 41,6 anos, de ambos os gêneros, usuários de AASI de maneira efetiva. Foi utilizado o Questionário internacional de Resultados para Aparelhos de Amplificação Sonora (International Outcome

  17. For patients with age -related hearing loss of hearing aid fit ing method is analyzed%对于老年性听力损失患者助听器的验配方法进行分析

    Institute of Scientific and Technical Information of China (English)

    朱美林

    2014-01-01

    objective:focus for senile patients with hearing loss of hearing aid fit ing method and ef ect.Methods:to select the research object is early January to the end of December 2013,2012 during accept hearing -aid with 60 cases of senile patients with hearing loss,al patients were accepted hearing -aid,and strengthen the rehabilitation training.Results:the fit ing ef ect for only 1 case with poor fit ing ef ect for a total of 9 cases,good fit ing ef ect for a total of 50 cases,was as high as 98.33%.Conclusion:the light of the specific conditions of the patients with hearing loss,for patients to choose the appropriate hearing AIDS fit ing,and strengthen the rehabilitation training,to improve success rate of hearing aid fit ing.%目的:重点探索老年性听力损失患者助听器的验配方法及效果。方法:选取的研究对象是2012年1月初至2013年12月底期间接受助听器验配的60例老年性听力损失患者,所有患者均接受助听器验配,并加强康复训练。结果:验配效果为差的仅有1例,验配效果为良的总共有9例,验配效果为优的总共有50例,优良率高达98.33%。结论:结合听力损失患者的具体情况,为患者选择合适的助听器进行验配,并加强康复训练,有利于提高助听器验配成功率。

  18. Promoting vision and hearing aids use in an intensive care unit

    OpenAIRE

    ZHOU, QIAOLING; Faure Walker, Nicholas

    2015-01-01

    Vision and hearing impairments have long been recognised as modifiable risk factors for delirium.[1,2,3] Delirium in critically ill patients is a frequent complication (reported as high as 60% to 80% of intensive care patients), and is associated with a three-fold increase in mortality and prolonged hospital stay.[1] Guidelines by the UK Clinical Pharmacy Association recommend minimising risk factors to prevent delirium, rather than to treat it with pharmacological agents which may themselves...

  19. A Low-Power Two-Digit Multi-dimensional Logarithmic Number System Filterbank Architecture for a Digital Hearing Aid

    Directory of Open Access Journals (Sweden)

    William Miller

    2005-11-01

    Full Text Available This paper addresses the implementation of a filterbank for digital hearing aids using a multi-dimensional logarithmic number system (MDLNS. The MDLNS, which has similar properties to the classical logarithmic number system (LNS, provides more degrees of freedom than the LNS by virtue of having two, or more, orthogonal bases and the ability to use multiple MDLNS components or digits. The logarithmic properties of the MDLNS also allow for reduced complexity multiplication and large dynamic range, and a multiple-digit MDLNS provides a considerable reduction in hardware complexity compared to a conventional LNS approach. We discuss an improved design for a two-digit 2D MDLNS filterbank implementation which reduces power and area by over two times compared to the original design.

  20. 基于DSP的多通道皮肤听声器%Multi-channel Skin-hearing Aid Based on DSP

    Institute of Scientific and Technical Information of China (English)

    李建文; 付蓉

    2011-01-01

    In order to improve the ability of deaf semantic analysis, the multi-channel band-pass filtering skin-hearing aid based on Digital Signal Processing(DSP) is designed. By comparing today's hearing-aid device and latest idea of skin-hearing, it reveals that the advantages of skin-hearing rely on no residual hearing and it can solve the deaf hearing problem from the fundamental. At the same time, the voice recognition of skin-hearing is a pattern matching process. This paper focuses on the two aspects of hardware and software to present the research program. The innovation lies with using multi-channel band-pass filter technologies in traditional method of skin-hearing, and improves the capacity of voice-recognition.%为提高聋哑人辨析语义的能力,设计基于数字信号处理的多通道带通滤波皮肤听声器.通过对助听设备现状及最新皮肤听声理念的比较,揭示皮肤听声器的优势在于不依赖于人耳的任何残余听力并能从根本上解决聋人的听力问题.阐述皮肤听声的语义识别是一个模式匹配的过程,并从硬件和软件2个方面介绍其研究方案.将多通道带通滤波技术应用到传统的皮肤听声技术中,可提高皮肤听声器辨识语音的能力.

  1. Feasibility of Using Supra-aural Headphones for Assessing the Aided Hearing Thresholds of Completely-in-the-canal Hearing Aids%头戴式气导耳机评估完全耳道式助听器助听听阈的可行性研究

    Institute of Scientific and Technical Information of China (English)

    苏俊; 李文靖; 管锐瑞; 张梅丽

    2015-01-01

    ObjectiveTo verify the feasibility of using supra-aural headphones for assessing the aided hearing thresholds of completely-in-the-canal(CIC) hearing aids.MethodsTwenty-six CIC hearing aid wearers (35 ears) received pure-tone audiometry before wearing hearing aid and aided hearing thresholds test in the sound field when wearing hearing aids and using supra-aural headphones. And the results were statistically analyzed.Results There were significant differences in the aided hearing thresholds of CIC hearing aid wearers at 250,1000, 2000 and 4000 Hz in the sound field and when using the supra-aural headphones(P<0.05),but the difference was less than 5 dB HL.The aided hearing thresholds in the sound field and when using the supra-aural headphones were linearly correlated with the pure-tone hearing thresholds at 250, 500, 1000, 2000 and 4000 Hz(P<0.01).Conclusion CIC hearing aid wearers can use supra-aural headphones to assess the aided hearing thresholds. However, this study only observes the aided hearing thresholds at 250-4000 Hz, so it can’t replace sound field test and further studies are needed.%目的:验证使用头戴式气导耳机对完全耳道式(completey-in-the-canal,CIC)助听器配戴者进行助听听阈评估是否具有可行性。方法对26例(35耳)CIC型助听器配戴者分别进行裸耳纯音听阈测试、声场条件下的助听听阈测试和头戴式气导耳机条件下的助听听阈测试,并对结果进行统计学分析。结果 CIC型助听器配戴者声场条件下与头戴式气导耳机条件下的助听听阈在250、1000、2000和4000 Hz处差异有统计学意义(P<0.05),但差值均<5 dB HL;声场条件下的助听听阈、头戴式气导耳机条件下的助听听阈和裸耳听阈两两间在250、500、1000、2000和4000 Hz频率下均呈显著直线相关趋势(P<0.01)。结论CIC助听器配戴者可用头戴式气导耳机进行助听听阈测试,但由于本研究只观察了250~4000 Hz

  2. Analysis on reasons of hearing aid fitting failure in 58 cases%助听器验配失败58例原因分析

    Institute of Scientific and Technical Information of China (English)

    王德平; 苏俊波; 骆文龙

    2016-01-01

    目的:分析助听器验配失败原因,寻找影响助听器验配的因素,从而指导耳聋康复工作的进行。方法通过对2015年3月1日至2016年3月1日该院收治的58例助听器验配失败的双侧重度感音神经性耳聋患者的问卷调查,分析助听器验配失败的原因。结果助听器验配失败原因以患者主观认为听力不重要[29.3%(17/58)]、配戴不适[25.9%(15/58)]、经济原因[20.7%(12/58)]居多。在病程内进行耳鼻咽喉头颈外科专科医生提供的耳聋康复治疗时间大于或等于2周组患者中认为配戴不适是导致验配失败的主要原因者[9/21(42.9%)]多于小于2周组[6/37(16.2%)],差异有统计学意义(χ2=4.959,P=0.026)。结论接受、使用助听器是多因素作用结果,受主观重视、经济支持、配戴舒适、家人支持等多重因素的影响。%Objective To analyze the reasons of failing in hearing aid fitting to find out factors affecting the hearing aid fitting for guiding the deafness rehabilitation work. Methods Fifty-eight patients with bilateral severe sensorineural deafness and hearing aid fitting failure in our hospital from March 1,2015 to March 1,2016 were surveyed by questionnaire for analyzing the reasons of hearing aid fitting failure. Results The reasons for failing to hearing aid fitting were mainly that the patient′s subjec tive thinking of hearing unimportance[29.3%(17/58)],uncomfortable hearing aid fitting[25.9%(15/58)] and economic reasons [20.7%(12/58)]. Those patients receiving the rehabilitation treatment from otorhinolaryngologists≥2 weeks during the disease course thinking that hearing aid discomfort was the main reason leading to hearing aid fitting failure were more than those patients receiving treatment<2 weeks[9/21(42.9%)vs. 6/37(16.2%),χ2=4.959,P=0.026 ]. Conclusion Receiving and using hearing aid are the results of many factors action,which are affected by multi-factors of subjective

  3. Development of preverbal communication skills in children with hearing aids%儿童选配助听器后前语言交流能力发育

    Institute of Scientific and Technical Information of China (English)

    李颖; 陈雪清; 刘海红; 孟超; 郭倩倩; 郑妍; 张华; 吴燕君; 孔颖

    2016-01-01

    目的:本研究利用“录像分析法”对聋儿选配助听器后前语言交流能力进行评估和分析,为制定合理的康复训练计划提供临床依据。方法研究对象为60名选配助听器的语前聋儿童。选配助听器时年龄为4-49个月,平均22.4±14.6个月。根据选配助听器时的听力损失程度将儿童分为A组(中度听力损失,11名)、B组(重度听力损失,36名)、C组(极重度听力损失,13名)。另外根据耳聋儿童选配助听器时的年龄,将儿童分为a组(选配助听器时年龄≤2岁,41名)、b组(选配助听器时年龄>2岁,19名)。使用“录像分析法”分别在选配后0(初次选配时)、3、6和12个月对儿童的轮流交流、视觉交流、主动交流和听觉注意四项前语言交流能力进行评估。结果 A、B、C三组儿童选配助听器一年内轮流交流及听觉注意能力得分均呈显著增长(P0.05)。a、b两组儿童选配助听器一年内轮流交流能力得分均呈显著增长(P0.05)。b组儿童选配助听器一年内听觉注意能力得分呈显著增长(P0.05)。结论耳聋儿童使用助听器时间越长,前语言交流能力越好。聋儿听力损失程度越轻,选配助听器后前语言交流能力发育速度越快。录像分析法可用于评估分析选配助听器后聋儿前语言交流能力。%Objective The aim of this study is to evaluate preverbal communication skills in children with hearing aids, to provide a basis for establishing a hearing and speech habilitation program. Methods Sixty children with hearing aids participated in this study. They all had prelingual hearing loss and aged from 4 to 49 months (mean=22.4 months) at hearing aid fitting. According to their hearing levels, children in this study were divided into three groups, i.e. those with moderate hearing loss (group A, n=11), severe hearing loss (group B, n=36), or with profound hearing loss (group C, n=13

  4. Micro Insert Moulding for the Production of 8 Pin RIC Socket for Hearing Aid Applications

    DEFF Research Database (Denmark)

    Islam, Aminul; Hansen, Hans Nørgaard; Larsen, Jacob W.

    - one based on semi-automated process and the other one is fully automated process. Current report presents the entire process chain for both the concepts and makes a comparative analysis based on the experimental investigation and validation. The work presented here can be a source of valuable......This report presents the development of an 8 Pin RIC (Receiver in the canal) Socket for hearing instruments within the framework of the European project COTECH. There were 8 industrial demonstrators developed in COTECH based on the converged product and process design. Sonion’s 8 Pin RIC Socket...

  5. Measuring Levels of Stress and Depression in Mothers of Children Using Hearing Aids and Cochlear Implants: A Comparative Study

    Science.gov (United States)

    Prakash, Santhi S; Prakash, S. G. R.; Ravichandran, Aparna; Susan, K. Y.; Alex, Winnie

    2013-01-01

    Hearing impairment is an exceptional circumstance that restricts the child's ability to communicate verbally. Depression is a common stress-related response for hearing parents of children with hearing loss. Evidence suggests that mothers are more inclined than fathers to experience depression in response to their child's hearing loss…

  6. Hearing, Ear Infections, and Deafness

    Science.gov (United States)

    ... Noise and Hearing Loss Prevention - National Institute for Occupational Safety and Health Infographic: Hearing Loss and Hearing Aid ... Into Health ® National Institute on Deafness and Other Communication Disorders 31 Center Drive, MSC 2320, Bethesda, MD ...

  7. Study of the Ability of Articulation Index (Al for Predicting the Unaided and Aided Speech Recognition Performance of 25 to 65 Years Old Hearing-Impaired Adults

    Directory of Open Access Journals (Sweden)

    Ghasem Mohammad Khani

    2001-05-01

    Full Text Available Background: In recent years there has been increased interest in the use of Al for assessing hearing handicap and for measuring the potential effectiveness of amplification system. AI is an expression of proportion of average speech signal that is audible to a given patient, and it can vary between 0.0 to 1.0. Method and Materials: This cross-sectional analytical study was carried out in department of audiology, rehabilitation, faculty, IUMS form 31 Oct 98 to 7 March 1999, on 40 normal hearing persons (80 ears; 19 males and 21 females and 40 hearing impaired persons (61 ears; 36 males and 25 females, 25-65 years old with moderate to moderately severe SNI-IL The pavlovic procedure (1988 for calculating Al, open set taped standard mono syllabic word lists, and the real -ear probe- tube microphone system to measure insertion gain were used, through test-retest. Results: 1/A significant correlation was shown between the Al scores and the speech recognition scores of normal hearing and hearing-impaired group with and without the hearing aid (P<0.05 2/ There was no significant differences in age group & sex: also 3 In test-retest measures of the insertion gain in each test and 4/No significant in test-retest of speech recognition test score. Conclusion: According to these results the Al can predict the unaided and aided monosyllabic recognition test scores very well, and age and sex variables have no effect on its ability. Therefore with respect to high reliability of the Al results and its simplicity, easy -to- use, cost effective, and little time consuming for calculation, its recommended the wide use of the Al, especially in clinical situation.

  8. Response of skin to audible signal and skin-hearing aid%皮肤对于声音信号响应与皮肤听声器

    Institute of Scientific and Technical Information of China (English)

    李建文; 于晓明; 曹力佳

    2008-01-01

    ①介绍了皮肤听声器的基本组成与昕声效果.这种新型的助听工具可使任何人通过皮肤获得听觉,但辨析语音的效果还不理想.②为了进一步研究皮肤响应声音信号的理论,构造了测试皮肤响应声音信号的实验环境.通过实验测试了皮肤响应声音信号的关键部件音频变压器、平面电极与皮肤听声之间的临界频率电压特性曲线,讨论了皮肤响应声音信号的关键部件与皮肤听声效果之间的关系,说明了通过声一电转换实现皮肤听声的特点和可行性.③介绍了新型可便携、低功耗助听产品一皮肤听声器,并与助听器、电子耳蜗、导聋犬等传统的助听工具进行了对比,说明了皮肤听声器的优越性能.%This study was designed to introduce basic components and sound-receiving effects of skin-hearing aid with transformer. This new device helped all people receive audible signals via skin, but the effects on discriminating phone were still not ideal.The experimental environment of the response of skin to audible signals was constructed for the theory research. The response on critical frequency and voltage among the transformer, the flat electrode and the skin has gotten in the experiment. It was discussed that the effect of the response of skin to audible signal between the key parts of device of hearing by skin with transformer and the skin. It was illustrated the practicability of skin hearing by sound-electricity converting.The skin-hearing aid, a low power consumption aid, was compared with traditional tools, such as hearing aid, electronic cochlea, and guide dogs, and the results proved the superiority of skin-hearing aid.

  9. A low-power high-performance configurable auto-gain control loop for a digital hearing aid SoC

    Science.gov (United States)

    Chengying, Chen; Hainan, Liu; Yong, Hei; Jun, Fan; Xiaoyu, Hu

    2013-10-01

    A low-power, configurable auto-gain control loop for a digital hearing aid system on a chip (SoC) is presented. By adopting a mixed-signal feedback control structure and peak detection and judgment, it can work in automatic gain or variable gain control modes through a digital signal processing unit. A noise-reduction and dynamic range (DR) improvement technique is also used to ensure the DR of the circuit in a low-voltage supply. The circuit is implemented in an SMIC 0.13 μm 1P8M CMOS process. The measurement results show that in a 1 V power supply, 1.6 kHz input frequency and 200 mVp—p, the SFDR is 74.3 dB, the THD is 66.1 dB, and the total power is 89 μW, meeting the application requirements of hearing aid SoCs.

  10. Development of Bone-Conducted Ultrasonic Hearing Aid for the Profoundly Deaf: Assessments of the Modulation Type with Regard to Intelligibility and Sound Quality

    Science.gov (United States)

    Nakagawa, Seiji; Fujiyuki, Chika; Kagomiya, Takayuki

    2012-07-01

    Bone-conducted ultrasound (BCU) is perceived even by the profoundly sensorineural deaf. A novel hearing aid using the perception of amplitude-modulated BCU (BCU hearing aid: BCUHA) has been developed; however, further improvements are needed, especially in terms of articulation and sound quality. In this study, the intelligibility and sound quality of BCU speech with several types of amplitude modulation [double-sideband with transmitted carrier (DSB-TC), double-sideband with suppressed carrier (DSB-SC), and transposed modulation] were evaluated. The results showed that DSB-TC and transposed speech were more intelligible than DSB-SC speech, and transposed speech was closer than the other types of BCU speech to air-conducted speech in terms of sound quality. These results provide useful information for further development of the BCUHA.

  11. Ranking Hearing Aid Input-Output Functions for Understanding Low-, Conversational-, and High-Level Speech in Multitalker Babble

    Science.gov (United States)

    Chung, King; Killion, Mead C.; Christensen, Laurel A.

    2007-01-01

    Purpose: To determine the rankings of 6 input-output functions for understanding low-level, conversational, and high-level speech in multitalker babble without manipulating volume control for listeners with normal hearing, flat sensorineural hearing loss, and mildly sloping sensorineural hearing loss. Method: Peak clipping, compression limiting,…

  12. A current mode feed-forward gain control system for a 0.8 V CMOS hearing aid

    International Nuclear Information System (INIS)

    A current mode feed-forward gain control (CMFGC) technique is presented, which is applied in the front-end system of a hearing aid chip. Compared with conventional automatic gain control (AGC), CMFGC significantly improves the total harmonic distortion (THD) by digital gain control. To attain the digital gain control codes according to the extremely weak output signal from the microphone, a rectifier and a state controller implemented in current mode are proposed. A prototype chip has been designed based on a 0.13 μm standard CMOS process. The measurement results show that the supply voltage can be as low as 0.6 V. And with the 0.8 V supply voltage, the THD is improved and below 0.06% (-64 dB) at the output level of 500 mVp-p, yet the power consumption is limited to 40 μW. In addition, the input referred noise is only 4 μVrms and the maximum gain is maintained at 33 dB. (semiconductor integrated circuits)

  13. A current mode feed-forward gain control system for a 0.8 V CMOS hearing aid

    Science.gov (United States)

    Fanyang, Li; Haigang, Yang; Fei, Liu; Tao, Yin

    2011-06-01

    A current mode feed-forward gain control (CMFGC) technique is presented, which is applied in the front-end system of a hearing aid chip. Compared with conventional automatic gain control (AGC), CMFGC significantly improves the total harmonic distortion (THD) by digital gain control. To attain the digital gain control codes according to the extremely weak output signal from the microphone, a rectifier and a state controller implemented in current mode are proposed. A prototype chip has been designed based on a 0.13 μm standard CMOS process. The measurement results show that the supply voltage can be as low as 0.6 V. And with the 0.8 V supply voltage, the THD is improved and below 0.06% (-64 dB) at the output level of 500 mVp-p, yet the power consumption is limited to 40 μW. In addition, the input referred noise is only 4 μVrms and the maximum gain is maintained at 33 dB.

  14. Pronto atendimento a usuários de dispositivos de amplificação sonora Emergency care to users of hearing aids

    Directory of Open Access Journals (Sweden)

    Tiago de Melo Araujo

    2011-12-01

    Full Text Available OBJETIVO: Estabelecer características demográficas e audiológicas de sujeitos usuários de aparelhos de amplificação sonora individuais (AASI que solicitaram retorno em um Serviço de Saúde Auditiva e identificar e analisar os motivos do retorno e condutas geradas durante o Pronto Atendimento (PA. MÉTODOS: Os participantes foram 440 sujeitos de idade superior a três anos, com diagnóstico e concessão do AASI no serviço onde foi realizada a pesquisa. Características demográficas, audiológicas e referentes ao uso do AASI foram coletadas em prontuários e ficha específica para o PA. Os dados obtidos foram analisados por meio de estatística descritiva e inferencial. RESULTADOS: O grupo estudado foi caracterizado, em sua maioria, por indivíduos do gênero feminino, idosos, grau de escolaridade no ensino fundamental incompleto, perda auditiva de grau moderado e perda auditiva do tipo neurossensorial bilateral. Quanto ao uso do AASI, a maioria dos sujeitos utilizava aparelho do tipo retroauricular com adaptação binaural. Quanto ao tempo de uso, mais de 70% utilizava o AASI pela primeira vez, 38% o fazia por um período de até 12 meses, e mais de 65% por um período maior que oito horas diárias. As condutas ajuste do AASI e orientação foram mais frequentes para sujeitos com menor tempo de uso do aparelho, enquanto as condutas assistência técnica e reposição, foram mais comuns para os sujeitos com maior tempo de uso. CONCLUSÃO: Conhecer características de pacientes usuários de AASI, assim como os motivos do retorno e condutas geradas, contribui para melhor organização e qualidade do serviço prestado.PURPOSE: To establish the demographic and audiological characteristics of subjects users of hearing aids (HA that requested a return at a Hearing Health Service, and to identify and analyze the reasons for the return and conducts generated during the Emergency Care (EC. METHODS: Participants were 440 subjects older than three

  15. Detection and Analysis of Electro-acoustic Performance of Hearing Aids%助听器电声性能的检测分析

    Institute of Scientific and Technical Information of China (English)

    张志清

    2014-01-01

    对助听器检测通常采用的国家标准为GB/T 14199-2010电声学助听器通用规范和GB/T 25102.100-2010电声学助听器第0部分:电声特性的测量,检测中需要关注的量值有频率范围、频率点、声压级、最大声压级、声压级均值、声压增益均值、谐波失真值、电流值,本文对此进行了分析总结,理顺了检测中相关量值的关系。%National standards for the detection of hearing aids commonly used to GB / T 14199-2010 General speciifcation electric acoustic hearing aids and GB / T 25102.100-2010 electric acoustic hearing aids - Part 0: Measurement, Detection need to focus on the magnitude of the electro-acoustic characteristics have frequency range, frequency, SPL, maximum SPL, SPL mean, mean sound pressure gain, harmonic distortion value, the current value of this were analyzed and summarized in this article, to rationalize the magnitude of the correlation detection relationships.

  16. TSG助听器用于耳鸣患者的临床结果%The Effect of TSG Hearing Aids on the Treatment of Tinnitus Patients

    Institute of Scientific and Technical Information of China (English)

    刘海红; 张峰; 张华; 冯定香

    2011-01-01

    目的 评估TSG助听器(GN Resound Live 9 TS)改善患者耳鸣的效果,从而检验该技术用于治疗单纯性耳鸣和耳鸣伴有听力障碍患者的可行性和疗效.方法 采用耳鸣残疾评估量表(TinnitusHandicap Inventory,THI)作为评估素材,分别对9名受试者在TSG助听器配戴前后的耳鸣残疾程度进行评估.结果 ①全部受试者配戴GN Resound Live 9 TS助听器前后THI总分和各条目得分均有显著性差异(P<0.0001) ; ②GN Resound Live 9 TS助听器配戴前后受试者THI的功能性、情感性及严重性得分均得到显著性改善(P<0.0001).结论 GN Resound Live 9 TS助听器对单纯耳鸣受试者或耳鸣伴有轻中度感音神经性听力损失者均显示出明显的改善作用.%Objective To evaluate the effectiveness and feasibility of Tinnitus Sound Generator (TSG) hearing aid (GN Resound Live 9 TS) in the treatment of tinnitus. Methods The Tinnitus Handicap Inventory (THI) was used to assess the degree of tinnitus in 9 subjects before and after wearing TSG hearing aids. Results The THI scores after 8 weeks of trial were significantly lower than the baseline scores(P<0.0001). The significant improvements were found in the functional, emotional and catastrophic THI scores after wearing the TSG hearing aids(P<0.0001).Conclusion Based on the assessment results, the GN Resound Live 9 TS hearing aid is an effective instrument to treat tinnitus patients with mild-to-moderate sensorineural hearing losses or with normal hearing even after a short period of use.

  17. 人工耳蜗与助听器对听障儿童嗓音音质的影响研究%Research of the effect of cochlear implant and hearing aid on voice quality of hearing impaired children

    Institute of Scientific and Technical Information of China (English)

    万萍; 黄昭鸣; 高娟娟

    2009-01-01

    目的:探讨人工耳蜗与助听器对聋儿嗓音音质的影响机制.方法:随机选择听障儿童组成健听组、助听器组、人工耳蜗组以及裸耳听障组,其中健听组与裸耳听障组作为对照控制组.采用"嗓音疾病评估仪"(TigerDRS)进行嗓音音质评估,要求儿童发//音,持续3 s.测试的声学参数为:F0、SDF0、Jitter、Shimmer、NNE、HNR、SNR.结果:人工耳蜗组的嗓音F0显著小于其他各组(均P0.05);人工耳蜗组与助听器组的SDF0显著大于健听组和裸耳听障组(P0.05);各组之间的嗓音音质参数(Jitter、Shimmer、NNE、HNR、SNR)差异无统计学意义(P>0.05).结论:人工耳蜗与助听器主要影响的是嗓音F0及SDF0,而对其他音质参数影响不大.%Objective:To discuss the effect of cochlear implant and hearing aid to voice quality.Method:Four groups of randomly selected 73 subjects were compared. The groups comprised: cochlear implant children, children using hearing aids, normal hearing children and deaf children with no hearing instrumention. The latter two groups were control groups. Each subject was required to phonate // about 3 s using 'voice assessment' to record the sound, and following voice acoustice variables were analysed: F0,SDF0,Jitter,Shimmer,NNE,HNR,SNR.Result:Voice F0 of children with cochlear implant was significantly lower that the other three groups(P0.05);SDF0 of cochlear implant group and hearing aids group were significantly larger than the normal hearing group and deaf children group with no intervention(P0.05),which means that cochlear implant and hearing aid could have affected the SDF0 of female children more than those of male children. There were no significant difference among all the four groups about voice quality variables: Jitter,Shimmer,NNE,HNR,SNR.Conclusion:Cochlear implant and hearing aid mainly change the voice F0 and/or SDF0, and have no effect on the voice quality variables.

  18. A 1.4-V 48-μW current-mode front-end circuit for analog hearing aids with frequency compensation

    Institute of Scientific and Technical Information of China (English)

    Wang Xiaoyu; Yang Haigang; Li Fanyang; Yin Tao; Liu Fei

    2012-01-01

    A current-mode front-end circuit with low voltage and low power for analog hearing aids is presented.The circuit consists of a current-mode AGC (automatic gain control) and a current-mode adaptive filter.Compared with its conventional voltage-mode counterparts,the proposed front-end circuit has the identified features of frequency compensation based on the state space theory and continuous gain with an exponential characteristic.The frequency compensation which appears only in the DSP unit of the digital hearing aid can upgrade the performance of the analog hearing aid in the field of low-frequency hearing loss.The continuous gain should meet the requirement of any input amplitude level,while its exponential characteristic leads to a large input dynamic range in accordance with the dB SPL (sound pressure level).Furthermore,the front-end circuit also provides a discrete knee point and discrete compression ratio to allow for high calibration flexibility.These features can accommodate users whose ears have different pain thresholds.Taking advantage of the current-mode technique,the MOS transistors work in the subthreshold region so that the quiescent current is small.Moreover,the input current can be compressed to a low voltage signal for processing according to the compression principle from the current-domain to the voltage-domain.Therefore,the objective of low voltage and low power (48 μW at 1.4 V) can be easily achieved in a high threshold-voltage CMOS process of 0.35 μm (VToN + |Vrop|≈ 1.35 V).The THD is below -45 dB.The fabricated chip only occupies the area of 1 × 0.5 mm2 and 1 × 1 mm2.

  19. Language Performance of Preschool Children with Bimodal Hearing Devices and Bilateral Hearing Aids%辅具类型对学龄前听障儿童词汇表现的影响

    Institute of Scientific and Technical Information of China (English)

    蔡立群; 洪右真

    2015-01-01

    目的:探讨不同辅具类型(人工耳蜗+助听器双模式和双侧助听器)对重度至极重度听障儿童词汇理解能力与表达能力的影响。方法选择3~7岁听障儿童66人,其中双模式组(CI+HA)和双侧助听器组(HA)各33人。分别以毕保德图画词汇测验(修订版)及汉语儿童理解与表达词汇测验评估被试的词汇理解与词汇表达能力。首先分析比较不同辅具类型的测验结果,其次将HA组分为极重度(HA1)与重度(HA2)两组,分别与生理年龄配对的CI+HA1组和CI+HA2组进行比较。结果不同辅具类型的两组测验分数无显著差异,不同听损程度的两组测验结果亦无显著差异。结论排除听损程度的影响,辅具类型的不同并未造成听障儿童词汇表现的差异。此结果有可能受到测验评估维度和测验频率的影响,需在未来研究中加以探讨和厘清。%Objective To investigate the effects of hearing aid mode on the receptive and expressive language abilities in children with severe to profound (>70 dB HL) hearing loss.Methods Sixty-six hearing-impaired children of 3-7 years old were selected as the subjects, including 33 with a hearing aid in one ear and a cochlear implant in the other ear(CI+HA), and 33 with bilateral hearing aids(HA). The Peabody Picture Vocabulary Test-Revised (PPVT-R) was utilized to assess the children’s receptive vocabulary performance. The Receptive and Expressive Vocabulary Test (REVT) was used to evaluate both receptive and expressive language skills. In the initial analysis, the standardized test scores of the bimodal group were compared with the bilateral HA group. To exclude the impact of the degree of hearing loss on language performance, the bilateral HA group were further divided into profound (HA1) and severe (HA2) sub-groups. The assessment results of the two sub-groups were then compared with their chronologically age-matched bimodal groups

  20. Aparelho de amplificação sonora individual: melhora a sensação de zumbido? Hearing aid: does it reduce the sensation of tinnitus?

    Directory of Open Access Journals (Sweden)

    Robson Caique Ferreira da Silva

    2007-06-01

    Full Text Available OBJETIVO: observar se o uso da amplificação sonora além de garantir melhora na inteligibilidade de fala pode proporcionar alívio na sensação de zumbido. MÉTODOS: participaram do presente estudo 21 indivíduos, usuários de aparelho de amplificação sonora individual (AASI que referiam sensação de zumbido, além da perda auditiva sensorioneural, sendo 13 (61,9% indivíduos do sexo feminino e oito (38,1% do sexo masculino. A idade dos participantes variou entre 35 a 88 anos, com idade média de 61 anos. Para a avaliação dos participantes foi utilizado um questionário específico. Os dados foram analisados por meio de análise estatística descritiva e para tanto foram utilizados os testes não paramétricos: qui-quadrado e Kruskal-Wallis H. RESULTADOS: Entre os 21 participantes, 17 (80,9% apresentaram melhora do zumbido, enquanto quatro (19,1% referiram que o aparelho de amplificação não gerou nenhum efeito sobre o sintoma apresentado. CONCLUSÃO: este estudo verificou que a utilização do AASI reduziu imediatamente a sensação de zumbido apresentada na população estudada.PURPOSE: to observe if the use of hearing aid may provide relief in tinnitus sensation besides guarantying the improvement of speech intelligibility. METHODS: a sample was made up by 21 hearing aid users and a specific questionnaire was used for the evaluation of the participants. The ages ranged from 35 to 88-year old, with an average of 61-year old. The tinnitus sensation was mentioned by 13 (61.9% female beings and eight (38.1% male beings beyond sensory neural hearing loss. The results were obtained through a descriptive statistical analysis, and furthermore, non-parametric tests were used, such as chi-square and Kruskal-Wallis H. RESULTS: among the participants 17 (80.9% showed recovery from tinnitus, while four (19.1% said that the hearing aid device did not cause any effect on the evidenced symptoms. CONCLUSION: this study found out that the usage of

  1. Localização sonora em usuários de aparelhos de amplificação sonora individual Sound localization by hearing aid users

    Directory of Open Access Journals (Sweden)

    Paula Cristina Rodrigues

    2010-06-01

    Full Text Available OBJETIVO: comparar o desempenho, no teste de localização de fontes sonoras, de usuários de aparelhos de amplificação sonora individual (AASI do tipo retroauricular e intracanal, com o desempenho de ouvintes normais, nos planos espaciais horizontal e sagital mediano, para as frequências de 500, 2.000 e 4.500 Hz; e correlacionar os acertos no teste de localização sonora com o tempo de uso dos AASI. MÉTODOS: foram testados oito ouvintes normais e 20 usuários de próteses auditivas, subdivididos em dois grupos. Um formado por 10 indivíduos usuários de próteses auditivas do tipo intracanal e o outro grupo formado por 10 usuários de próteses auditivas do tipo retroauricular. Todos foram submetidos ao teste de localização de fontes sonoras, no qual foram apresentados, aleatoriamente, três tipos de ondas quadradas, com frequências fundamentais em 0,5 kHz, 2 kHz e 4,5 kHz, na intensidade de 70 dBA. RESULTADOS: encontrou-se percentuais de acertos médios de 78,4%, 72,2% e 72,9% para os ouvintes normais, em 0,5 kHz, 2 kHz e 4,5 kHz, respectivamente e 40,1%, 39,4% e 41,7% para os usuários de aparelho de amplificação sonora individual. Quanto aos tipos de aparelhos, os usuários do modelo intracanal acertaram a origem da fonte sonora em 47,2% das vezes e os usuários do modelo retroauricular em 37,4% das vezes. Não foi observada correlação entre o percentual de acertos no teste de localização sonora e o tempo de uso da prótese auditiva. CONCLUSÃO: ouvintes normais localizam as fontes sonoras de maneira mais eficiente que os usuários de aparelho de amplificação sonora individual e, dentre estes, os que utilizam o modelo intracanal obtiveram melhor desempenho. Além disso, o tempo de uso não interferiu no desempenho para localizar a origem das fontes sonoras.PURPOSE: to compare the sound localization performance of hearing aids users, with the performance of normal hearing in the horizontal and sagittal planes, at 0.5, 2 and 4

  2. AIDS and Young Children in South Florida. Hearing before the Select Committee on Children, Youth, and Families. House of Representatives, One Hundred First Congress, First Session (Miami, FL, August 7, 1989).

    Science.gov (United States)

    Congress of the U.S., Washington, DC. House Select Committee on Children, Youth, and Families.

    This document is a record of a hearing on acquired immune deficiency syndrome (AIDS) and young children in South Florida. Opening statements are provided by Congressmen George Miller, William Lehman, and Richard Durbin; a fact sheet on AIDS and young children in South Florida is also presented. Testimony is presented by the following: (1) Ana…

  3. The Effect of Hearing Loss and Hearing Aids on the Use of Information and Communication Technologies by Community-Living Older Adults

    Science.gov (United States)

    Gonsalves, Chris; Pichora-Fuller, Margaret Kathleen

    2008-01-01

    Innovations in information and communication technologies are changing society, but only 1 in 15 Canadian seniors used a computer at the turn of the millennium (Statistics Canada, 2000). Furthermore, about 1 in 5 Canadian seniors has difficulty hearing, seeing, or communicating. The primary goal of the study was to investigate the relationship…

  4. Adaptação de próteses auditivas no candidato ao implante coclear Fitting hearing aid in patients candidate for cochlear implants

    Directory of Open Access Journals (Sweden)

    Ana Tereza de Matos Magalhães

    2011-02-01

    Full Text Available OBJETIVO: caracterizar o perfil audiométrico e demográfico de pacientes candidatos ao implante coclear encaminhados ao setor de prótese auditiva e entre esses, a frequência de indivíduos que se beneficiaram da amplificação sonora. MÉTODOS: foram estudados os pacientes atendidos no período de maio de 2007 a dezembro 2008. Foi realizado o levantamento do perfil da população segundo sexo, idade, escolaridade e etiologia. Foi calculada a média da melhor e pior orelha e classificada segundo Frota (2003. A média dos limiares auditivos com as próteses auditivas indicadas foi calculada e considerada como benefício quando permitia acesso aos sons da fala do português brasileiro (Russo e Behlau, 1993. RESULTADOS: foram avaliados nesse período 194 prontuários. 108 pacientes já eram usuários de próteses auditivas (55,6%, 100 do sexo masculino (52%, 94 do sexo feminino (48%, 109 eram crianças (56% e 85 eram adultos (44%. A média de idade foi 4,8 anos (crianças e 41,9 anos (adultos. Entre os adultos, 24 possuíam ensino fundamental incompleto (33%. A etiologia mais frequente foi a desconhecida (33%. Dezenove pacientes se beneficiaram do uso da prótese auditiva (10%. No grupo de pacientes que se beneficiaram da prótese auditiva, a média dos limiares em campo livre com amplificação foi de 47 dBNA e 48 dBNA, na melhor e na pior orelha, respectivamente, nas crianças e 50 dBNA e 45 dBNA, respectivamente, nos adultos. CONCLUSÃO: o perfil dos pacientes foi: na maioria criança, sexo masculino, etiologia desconhecida, já usuários de próteses auditivas com média de idade 4,8 anos (crianças e 41,9 anos (adultos, audiometria com perda auditiva neurossensorial profunda bilateral, sendo que a prótese beneficiou 10% dos pacientes.PURPOSE: to characterize the audiometric and demographic profile of cochlear implant candidates who were referred to hearing aid sector, and if they benefit from the amplification of the hearing aid. METHODS

  5. 助听器音频补偿效果与构音清晰度的相关研究%A Study of the Relationship between Aided Hearing Thresholds and Speech Intelligibility

    Institute of Scientific and Technical Information of China (English)

    张蕾; 孙喜斌; 黄昭鸣; 刘巧云; 张芳; 张磊; 朱群怡

    2011-01-01

    目的 通过分析配戴助听器儿童的音频补偿效果与构音清晰度得分的相关关系,为听障儿童的听觉言语综合康复提供理论依据.方法 对43名配戴助听器儿童进行助听后的声场测试以及构音语音能力主观评估,并进行统计学分析.结果 助听器音频补偿效果越差,听障儿童的构音清晰度得分越低.结论 助听器验配与优化只是补偿听力的完成,进行听觉康复训练和言语矫治是充分发挥助听器作用的必要手段,也是提高听障儿童构音清晰度的前提和基础.%objective To analyze the relationship between aided hearing thresholds and speech intelligibility of children with hearing aids and to provide theoretical basis for their auditory and speech rehabilitation. Methods Forty-three children with hearing aids received the sound field measurement and subjective articulation assessment. The test results were statistically analyzed. Results The results showed that the worse the hearing aid outcome, the lower the scores of speech articulation. Conclusion It is necessary to provide auditory training and speech therapy for hearing-impaired children after the hearing aid fitting, because it is crucial to maximizing the effects of hearing aids and improving the speech intelligibility.

  6. Reliability of real ear insertion gain in behind-the-ear hearing aids with different coupling systems to the ear canal

    OpenAIRE

    Jespersen, Charlotte Thunberg; Møller, Kimi Nina

    2013-01-01

    Objective The last decade has offered a multitude of instant fit coupling systems to be fitted with behind-the-ear (BTE) hearing aids. The impact of these designs on the reliability of real ear measurements (REMs) has not been reported. The purpose of this study was to obtain REM reliability data for instant fit coupling systems. Design REM reliability data was obtained for four different instant-fit coupling systems and for standard size 13 tubing and custom earmolds. REMs were performed for...

  7. Self-reported outcomes of aural rehabilitation for adult hearing aid users in a developing South African context

    OpenAIRE

    Elaine Pienaar; Natalie Stearn; De Wet Swanepoel

    2010-01-01

    Hearing impairment has far reaching consequences for affected individuals, in terms of quality of life indicators. In a developing South African context the hearing impaired population is faced with limited aural rehabilitation services. This study evaluated self-reported outcomes of aural rehabilitation in a group of adults in the public healthcare sector with a standardized outcomes measurement tool (IOI-HA). Sixty-one respondents participated (44% males; 56% females), with a mean age of 69...

  8. Negotiating hearing disability and hearing disabled identities

    DEFF Research Database (Denmark)

    Lykke Hindhede, Anette

    2012-01-01

        Using disability theory as a framework and social science theories of identity to strengthen the arguments, this paper explores empirically how working-age adults confront the medical diagnosis of hearing impairment. For most participants hearing impairment threatens the stability of social...... interaction and the construction of hearing disabled identities is seen as shaped in the interaction with the hearing impaired person‟s surroundings. In order to overcome the potential stigmatisation the „passing‟ as normal becomes predominant. For many the diagnosis provokes radical redefinitions of the self....... The discursively produced categorisation and subjectivity of senescence mean that rehabilitation technologies such as hearing aids identify a particular life-style (disabled) which determines their social significance. Thus wearing a hearing aid works against the contemporary attempt to create socially ideal...

  9. Development of a Bone-Conducted Ultrasonic Hearing Aid for the Profoundly Deaf: Evaluation of Sound Quality Using a Semantic Differential Method

    Science.gov (United States)

    Nakagawa, Seiji; Fujiyuki, Chika; Kagomiya, Takayuki

    2013-07-01

    Bone-conducted ultrasound (BCU) is perceived even by the profoundly sensorineural deaf. A novel hearing aid using the perception of amplitude-modulated BCU (BCU hearing aid: BCUHA) has been developed. However, there is room for improvement particularly in terms of sound quality. BCU speech is accompanied by a strong high-pitched tone and contain some distortion. In this study, the sound quality of BCU speech with several types of amplitude modulation [double-sideband with transmitted carrier (DSB-TC), double-sideband with suppressed carrier (DSB-SC), and transposed modulations] and air-conducted (AC) speech was quantitatively evaluated using semantic differential and factor analysis. The results showed that all the types of BCU speech had higher metallic and lower esthetic factor scores than AC speech. On the other hand, transposed speech was closer than the other types of BCU speech to AC speech generally; the transposed speech showed a higher powerfulness factor score than the other types of BCU speech and a higher esthetic factor score than DSB-SC speech. These results provide useful information for further development of the BCUHA.

  10. A low-power high-performance configurable auto-gain control loop for a digital hearing aid SoC

    International Nuclear Information System (INIS)

    A low-power, configurable auto-gain control loop for a digital hearing aid system on a chip (SoC) is presented. By adopting a mixed-signal feedback control structure and peak detection and judgment, it can work in automatic gain or variable gain control modes through a digital signal processing unit. A noise-reduction and dynamic range (DR) improvement technique is also used to ensure the DR of the circuit in a low-voltage supply. The circuit is implemented in an SMIC 0.13 μm 1P8M CMOS process. The measurement results show that in a 1 V power supply, 1.6 kHz input frequency and 200 mVp—p, the SFDR is 74.3 dB, the THD is 66.1 dB, and the total power is 89 μW, meeting the application requirements of hearing aid SoCs. (semiconductor integrated circuits)

  11. 基于MATLAB的皮肤听声器系统的研究%The research of skin-hearing aid compact system based on MATLAB

    Institute of Scientific and Technical Information of China (English)

    王钟斐; 王彪

    2011-01-01

    In order to make skin-hearing aid compac be able to discriminate voice,the skin-hearing aid compact system based on MATLAB is designed.The MATLAB software is used as a platform of this system,on this basis the functions of record, broadcast, pretreat voice signals,subsection filtering and feature extraction are achieved,and characteristic parameter is used to discriminate voice. This system has achieved discriminate simple voice requirements,but some places are needed to improve,such as whether more suitable characteristic parameters could be structed,whethercomplex voice coule be discriminated.%为了使皮肤听声器能够辨析语音,设计了基于MATLAB的皮肤听声器系统.该系统以MATLAB软件为平台,在此基础上实现了语音信号的录制、播放、预处理、分段滤波、特征提取等功能,并利用特征参数辨析语音.本系统达到了辨析简单语音的要求,但仍有需改进的地方,如:能否构造更合适的特征参数,能否辨析比较复杂的语音.

  12. Opportunistic hearing screening in elderly inpatients

    OpenAIRE

    Ramdoo, Krishan; Bowen, Jordan; Dale, Oliver T; Corbridge, Rogan; Chatterjee, Apurba; Gosney, Margot A

    2014-01-01

    Objective: To determine the prevalence of occult hearing loss in elderly inpatients, to evaluate feasibility of opportunistic hearing screening and to determine subsequent provision of hearing aids. Materials and methods: Subjects (>65 years) were recruited from five elderly care wards. Hearing loss was detected by a ward-based hearing screen comprising patient-reported assessment of hearing disability and a whisper test. Subjects failing the whisper test or reporting hearing difficulties wer...

  13. Opportunistic assessment of hearing in elderly inpatients

    OpenAIRE

    Ramdoo, Krishan; Bowen, Jordan; Dale, Oliver T; Corbridge, Rogan; Chatterjee, Apurba; Gosney, Margot A

    2014-01-01

    Objective: To determine the prevalence of occult hearing loss in elderly inpatients, to evaluate feasibility of opportunistic hearing screening and to determine subsequent provision of hearing aids. Materials and methods: Subjects (>65 years) were recruited from five elderly care wards. Hearing loss was detected by a ward-based hearing screen comprising patient-reported assessment of hearing disability and a whisper test. Subjects failing the whisper test or reporting hearing difficulti...

  14. 助听器安全专用标准解读及转化建议%Interpretation of the Standard for Safety of Hearing Aid and Suggestions for Transformation

    Institute of Scientific and Technical Information of China (English)

    傅金德; 陈涛

    2015-01-01

    助听器是用来弥补听力障碍者由于听力损伤所造成缺陷的一种医用电气设备。在过去,助听器一直被认为是安全的,所以业内对于助听器安全的重视程度一直不够。本文介绍了国内外助听器行业标准化的状况,阐述了对安全专用标准转化的迫切需要,解读了IEC60601-2-66《助听器及助听器系统基本安全和主要性能专用要求》,并提出了为了促进行业发展,转化该标准的建议方案。%Hearing aid are used to make up for the hearing impaired due to hearing loss caused by the defect of a kind of medical electrical equipment. In the past, hearing aid has long been regarded as safe, security industry for hearing adi enough emphasis. This paper introduces the status of the hearing aid industry standardization, expounds the transformation of dedicated to safety standards are urgently needed. The author explains the IEC60601-2-66 " Medical electrical equipment – Part 2-66: Particular requirements for the basic safety and essential performance of hearing instruments and hearing instrument systems ", and put forward in order to promote the development of the industry, transformation of the standard proposal.

  15. Timing Considerations in Trainable Hearing Aids%增益训练功能开启时间对助听器选配效果的影响

    Institute of Scientific and Technical Information of China (English)

    张敏; Catherine V. Palmer; H.Gustav Mueller

    2015-01-01

    Previous investigations have explored the auditory adaptation to changed audibility after ampliifcation, and a number of approaches that lead to preferred gain by the hearing aid users during the adaptation process have been examined. However, the relationship between the preferred gain and adaptation process is still unclear. The purpose of this study was to determine the impact of the timing of implementing a gain learning on the ifnal preferred gain. Thirty-six ifrst-time hearing aid users participated in a double-blinded ifeld trial. They were randomly assigned to one of two groups. The control group had the preferred gain learning feature turned off for the ifrst month of new ampliifcation and the experimental group had the preferred gain learning feature turned on from the ifrst day of iftting. Objective and subjective outcomes were measured. Results showed that the decrease in audibility as represented by the calculated SII for soft speech at the end of the 8th week was signiifcantly larger when the gain learning feature was turned on immediately than when it was turned on 4 weeks after the initial hearing aid iftting. There was no signiifcant difference on mean scores of the PAL or the IOI-HA under the ifnal preferred gain setting between the two groups. 22 out of the 36 (61%) participants stated that they preferred continuing to use the ifnal trained gain regardless of which group they were in;the same amount of participants chose to keep the gain learning feature on.%目的:探究可训练助听器增益训练功能开启的时间对可听度及噪声下言语理解度的影响。方法采用双盲试验将36名助听器初戴者随机分为两组,实验组的增益训练功能在助听器验配当天开启,而对照组的增益训练功能在验配1个月之后开启。经过三个阶段为期10周的增益调节和听觉适应后,采用言语清晰度指数(speech intelligibility index,SII)、噪声下言语测试(Hearing In Noise Test

  16. Study on the Status and the Needs of Hearing Aid of 0-6 Years Hearing Loss Children's Education%0~6岁听损助听后儿童教育现状及需求的调查研究

    Institute of Scientific and Technical Information of China (English)

    许海燕; 李赞; 马玉娇; 陈晨; 朱媛; 董红艳

    2014-01-01

    Objective:To understand hearing loss 0-6 years to help children's education status and needs to hear. Methods:Questionnaire homemade"0-6 years of hearing compensation or rehabilitation of children with educational needs rebuilding questionnaire"were parents of children with hearing loss and their teachers conducted a sample survey, summarized and anal-yzed 0-6 year old hearing aids hearing loss according to the results after the child's educational status quo and demand. Re-sults:①hearing loss Hearing aid hearing aids for children to wear to strengthen awareness, but room for improvement in hearing results;②not yet fully meet the needs of communication, adaptive communication needs further study;③rehabili-tation and education programs constitute the team is not comprehensive enough;④placement patterns in various forms, but the appropriateness needs to be strengthened. Conclusion:0-6 against hearing loss Hearing aid rehabilitation education for children should follow the traditional basis of rehabilitation, education, tailored to their specific needs more.%目的:了解0~6岁听损助听后儿童教育现状及需求。方法:使用自制问卷表《0-6岁听力补偿或重建儿童康复教育需求调查问卷》,分别对听损儿童家长及其教师进行抽样调查,根据其结果总结并分析0~6岁听损助听后儿童的教育现状与需求。结果:①听损助听后儿童助听辅具佩戴意识加强,但助听效果有待改善;②沟通方式需求尚未全面满足,适性沟通方式有待进一步研究;③康复教育的课程构成和团队不够全面;④安置模式形式多样,但适切性有待加强。结论:0~6对听损助听后儿童的康复教育应在遵循传统康复教育基础上,切合其更多的特殊需求。

  17. Hearing poorly with skill

    DEFF Research Database (Denmark)

    Day, Dennis

    2012-01-01

    This paper offers an account of ongoing research into hearing. I offer a characterization of 'skil- led practitioners' from an Ethnomethodological perspective. The skilled practitioner in question is a generic 'hard of hearing' person. The ambition is that such a characterization, both in its mak...... making and its final state, may be an intrinsic part of design practices concerning the development of hearing aids.......This paper offers an account of ongoing research into hearing. I offer a characterization of 'skil- led practitioners' from an Ethnomethodological perspective. The skilled practitioner in question is a generic 'hard of hearing' person. The ambition is that such a characterization, both in its...

  18. Research Progress and Outlook of Speech Processing Algorithms for Digital Hearing Aids%数字助听器语音处理算法研究进展与展望

    Institute of Scientific and Technical Information of China (English)

    邹采荣; 梁瑞宇; 谢跃

    2016-01-01

    As the world populatian aging ,hearing impairments become a high incidence chronic disease . Hearing aids is one of the most effective means of hearing intervention and hearing rehabilitation for pres‐bycusis hearing patients .Various techniques of hearing aids have advanced significantly over the past dec‐ades ,primarily thanks to the maturing of signal processing technology and electronic technology .Among these technologies ,sound classfication ,filter decomposition ,noise suppression and echo cancellation are four basic algorithms for hearing aids .Based on deep understanding ,we elaborate the algorithms in terms of aspects :the basic principles ,the current research status ,features and problems .In addition , by analyzing the current problems of hearing aids ,three new research direction ,auditory bionics ,audito‐ry cognition and selffitting hearing aids ,are outlooked and briefly introduced .%全球老龄化使听力障碍成为高发性慢性疾病,而佩戴助听器是老年性聋患者听力干预和康复最有效的手段之一。随着数字信号处理技术和电子技术的飞速进步,近年来应用于数字助听器的各种算法和技术得到了显著的发展。其中声场景分类、滤波器分解、噪声抑制和回声消除是助听器的4个基本算法。基于对这些算法的研究,本文从算法基本原理、当前研究现状、算法特点以及存在的问题进行分析介绍。此外,通过分析现阶段数字助听器算法中存在的问题,介绍了3个助听器信号处理方面的最新研究方向———听觉仿生、听觉认知和自验配助听器。本文最后对未来研究进行了展望。

  19. The Influence of Unilateral and Bilateral Amplification on the Effect of Hearing Aid Evaluation%单、双耳佩戴助听器对助听效果的影响

    Institute of Scientific and Technical Information of China (English)

    陈鱼; 王悦; 王巍; 陈太生; 林鹏

    2014-01-01

    Objective To study the influence of unilateral and bilateral amplification on the effect of hearing aid evaluation .Methods Using the subjective method that International Outcome Inventory for Hearing Aids (IOI-HA) and objective method that medium acoustic intensity (65 dB SPL) word recognition score(WRS) to evaluate the effect of unilateral and bilateral hearing aid fitting of middle -aged severe sensorneural hearing loss .Results Hearing aid were used for severe sensorneural hearing loss and the improvement of monosyllables and sentences in quiet and noise test of unilateral were 35 .73% ,43 .15% ,43 .23% ;the improvement of monosyllables and sentences in quiet and noise test of bilateral were 37 .90% ,51 .33% ,54 .86% .The WRS of bilateral was higher than unilater-al .The score of IOI-HA was 15~37 ,meaning patients with severe sensorneural hearing loss were satisfied with hearing aid ,and there was no statistical significance between unilateral and bilateral fitting .Conclusion The bilat-eral hearing aid fitting was better than unilateral .Binaural hearing loss are recommended to fit bilaleral hearing aids .%目的:探讨单、双耳佩戴助听器对助听效果的影响。方法应用助听器效果国际性调查问卷(the in-ternational outcome inventory for hearing aids ,IOI-HA)和中等声强度(65 dB SPL)下的言语识别率测试,对26例单耳佩戴及21例双耳佩戴助听器的成年重度感音神经性聋患者进行助听效果评估。结果重度感音神经性聋患者佩戴助听器后,单耳佩戴者的单音节词、安静及噪声下语句识别率改善值分别为35.73%、43.15%、43.23%,双耳佩戴者分别为37.90%、51.33%、54.86%,且双耳佩戴者的言语识别率高于单耳佩戴者;单、双耳佩戴者IOI -HA整体得分分别为29.96±3.04和29.52±5.29分,对助听器使用效果满意度均较高,且两者间IOI -HA得分差异无统计学意义(P>0.05)。

  20. Preface to the publication of the Chinese Version of the WHO Guidelines for Hearing Aids and Services for Developing Countries (2nd Edition) in the January 2005 issue of the Journal of Audiology and Speech Pathology

    Institute of Scientific and Technical Information of China (English)

    Hearing Aids Working Group

    2005-01-01

    @@ It is a great pleasure to be given this opportunity to write a preface for the publication of the first Chinese version of the World Health Organization (WHO) Guidelines for Hearing Aids and Services for Developing Countries (2nd Edition) in this issue of the Journal of Audiology and Speech Pathology.

  1. Direcionalidade e redução de ruído em AASI: percepção de fala e benefício Directivity and noise reduction in hearing aids: speech perception and benefit

    Directory of Open Access Journals (Sweden)

    Camila Angélica Quintino

    2010-10-01

    Full Text Available Aparelho de Amplificação Sonora Individual (AASI. OBJETIVO: Comparar o desempenho, benefício e a satisfação de usuários de AASI intra-aural e retroauricular digital com algoritmo de redução de ruído e microfones omnidirecional e direcional. MATERIAL E MÉTODO: 34 usuários de AASI digital foram avaliados por meio do reconhecimento de sentenças no ruído e dos questionários APHAB e IOI. Estudo prospectivo. RESULTADOS: Melhores resultados foram obtidos com AASI intra-aurais e AASI direcionais, no entanto, não houve diferença estatística significante entre os grupos. CONCLUSÃO: A direcionalidade favoreceu o reconhecimento de fala no ruído e o benefício obtido em vida diária.Hearing aid. AIM: To compare the performance, benefit and satisfaction of users of ITE, CIC and BTE digital hearing aid with noise reduction and omnidirectional and directional microphones. METHOD: 34 users of hearing aid were evaluated by means of speech perception in noise tests and APHAB and IOI self assessment questionnaires. Prospective study. RESULTS: Better results were obtained by users of ITE, CIC and directional hearing aids, however, no statistical significance was found between the groups. CONCLUSION: Directivity improved speech perception in noise and benefit in daily life situations.

  2. Social representation of hearing aids: Cross-cultural study in India, Iran, Portugal, and the United Kingdom

    OpenAIRE

    Manchaiah V; Danermark B; Vinay; Ahmadi T; Tomé D; Krishna R; Germundsson P

    2015-01-01

    Vinaya Manchaiah,1 Berth Danermark,2 Vinay,3 Tayebeh Ahmadi,4 David Tomé,5 Rajalakshmi Krishna,6 Per Germundsson7 1Department of Speech and Hearing Sciences, Lamar University, Beaumont, Texas, USA; 2Swedish Institute for Disability Research, Örebro University, Örebro, Sweden; 3Department of Clinical Medicine, University of Tromsø, Tromsø, Norway; 4Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; 5Department of Audi...

  3. The Relationship between the Development of Auditory and Speech in Infants with Hearing Loss after Hearing Aid Fitting%语前聋婴幼儿助听后听觉及言语能力发育的相关性

    Institute of Scientific and Technical Information of China (English)

    吕静; 陈雪清; 张华; 李靖; 吴燕君; 王硕; 孔颖

    2015-01-01

    目的:分析语前聋婴幼儿助听后听觉与言语能力发育的相关性,探讨不同耳聋程度、不同评估阶段其助听前后的言语能力发育随听觉能力发展变化的关系。方法以32例语前聋婴幼儿为研究对象,助听器选配年龄3~34个月,平均15.6个月,分为极重度耳聋组(16例)、重度耳聋组(11例)和中度耳聋组(5例),使用听觉行为分级(categories of auditory performance ,CAP)和言语可懂度分级(speech intelligibility rating ,SIR)问卷分别于助听前及助听后1、3、6、9、12个月时对患儿的听觉及言语发育能力进行评估,并进行线性相关与回归分析。结果极重度、重度及中度耳聋组CAP与SIR评估得分均存在线性相关,相关性由低到高依次为极重度耳聋组(R=0.656)、重度耳聋组(R=0.758)、中度耳聋组(R=0.849)(均为 P<0.05)。助听前后不同评估阶段CAP与SIR评估得分均存在线性相关,相关性由低到高依次为助听前(R=0.559)、助听后1个月(R=0.575)、助听后3个月(R=0.726)、助听后6个月(R=0.823)、助听后9个月(R=0.838)、助听后12个月(R=0.855)(均为 P<0.05)。结论语前聋婴幼儿助听后听觉与言语能力发育密切相关,言语能力随听觉能力的提高而提高;耳聋程度越轻、助听器使用时间越长,助听后婴幼儿听觉与言语能力发育的相关性越高。%Objective The aim of this study is to analyze the relationship between the development of audito‐ry and speech in infants with hearing loss after hearing aid fitting and discuss the development of speech with the a‐bility of auditory in infants with different degree of hearing loss and different stage of evaluation after hearing aid fit‐ting .Methods A total of 32 infants (17 boys and 15 girls) with prelingual hearing loss participated in this study . The age at

  4. Próteses auditivas e tempos de recuperação: estudo segundo status cognitivo Hearing aids and recovery times: a study according to cognitive status

    Directory of Open Access Journals (Sweden)

    Rosângela Ghiringhelli

    2013-04-01

    Full Text Available Estudos demonstram que idosos com dificuldades cognitivas apresentam maior benefício com próteses auditivas com tempos lentos de recuperação. OBJETIVO: Estudar as restrições de participação e reconhecimento de sentenças no ruído em idosos com próteses auditivas com diferentes tempos de recuperação segundo o status cognitivo. MÉTODO: Foram selecionados, avaliados e acompanhados por quatro meses 50 idosos, 60-80 anos, que inicialmente formaram os grupos-estudo sem (G1-24 idosos e com (G2-26 participantes alteração cognitiva conforme resultados do teste "Alzheimer's Disease Assessment Scale-Cognitive Subscale". Metade de cada grupo recebeu próteses auditivas com tempo de recuperação mais rápido e metade lento, formando-se quatro grupos: dois sem alteração cognitiva (tempos mais rápido G1R/lento-G1L e dois sugestivos de alteração cognitiva (tempos mais rápido G2R/lento-G2L. Todos os grupos, após a avaliação inicial que constou de anamnese e avaliação audiológica básica, foram submetidos ao Protocolo: questionário de autoavaliação "Hearing Handicap Inventory for the Eldery" e teste Listas de Sentenças em Português. Aplicou-se Análise de Variância (ANOVA, Mc Nemar e Qui-quadrado com nível de significância de 0,05. RESULTADOS: Houve melhora significante na restrição de participação e reconhecimento de sentenças no ruído apenas com amplificação sonora. O subgrupo G2R necessita de relações sinal-ruído mais favoráveis para reconhecer 50% das sentenças no ruído. CONCLUSÃO: Há melhora na restrição de participação e reconhecimento de fala no ruído independentemente dos tempos de recuperação e status cognitivo.Studies have shown that elderly people with cognitive impairments benefit more from hearing aids with slower recovery times. OBJECTIVE: To study participation constraints and speech recognition in noise of elderly subjects equipped with hearing aids of different recovery times according to

  5. Achados vestibulares em usuários de aparelho de amplificação sonora individual Vestibular findings in hearing aid users

    Directory of Open Access Journals (Sweden)

    Fabiane Paulin

    2009-01-01

    Full Text Available OBJETIVO: verificar os achados vestibulares em pacientes com perda auditiva neurossenssorial usuários de aparelho de amplificação sonora individual. MÉTODOS: vinte pacientes, 11 do sexo feminino e nove do sexo masculino, com idades entre 39 e 85 anos, com perda auditiva neurossenssorial bilateral de grau moderado e severo foram atendidos em uma Instituição de Ensino Superior e submetidos a uma anamnese, inspeção otológica, avaliação audiológica, imitanciometria e ao exame vestibular por meio da vectoeletronistagmografia. RESULTADOS: a dos 20 pacientes avaliados, 18 (90% apresentaram queixa de zumbido, 15 (75% queixa de tontura e oito (40% queixa de cefaléia; b houve predomínio de alteração na prova calórica e no sistema vestibular periférico; c o resultado do exame vestibular esteve alterado em 14 pacientes (70%, sendo, oito casos (40% de síndrome vestibular periférica irritativa e seis casos (30% de síndrome vestibular periférica deficitária; d verificou-se diferença significativa entre o resultado do exame vestibular e o tempo de uso do aparelho de amplificação sonora individual; e dos cinco pacientes que não referiram nenhum sintoma vestibular, quatro (80% apresentaram alteração no exame. CONCLUSÃO: ressalta-se a sensibilidade e importância do estudo funcional do sistema do equilíbrio neste tipo de população, uma vez que podem ocorrer alterações na avaliação labiríntica independente da presença de sintomas.PURPOSE: to check vestibular findings in patients with sensoneural hearing loss, hearing aid users. METHODS: 20 patients (eleven females and nine males aging from 39 to 85-year-old with bilateral sensorineural hearing loss, from moderate to severe degrees, were attended in a higher education institution evaluated by medical history, otological inspections, complete basic conventional audiological evaluations, acoustic impedance tests and vectoeletronystagmography. RESULTS: a from the 20 evaluated

  6. 浅析助听器远程验配和现场验配现状%The Analysis of Remote and Local Hearing Aid Fitting for Sensorineural Deafness

    Institute of Scientific and Technical Information of China (English)

    张晟; 刘璟

    2015-01-01

    目的:发现给感音神经性聋患者验配助听器过程中存在的问题,初步分析助听器验配成功率较低的原因,以达到提高基层医院的验配成功率的目的。方法通过对比感音神经性耳聋患者远程专业技师验配(38例)和现场专业技师验配助听器(40例)的成功率,分析助听器验配失败的原因。结果我院远程验配助听器和现场验配助听器成功率均较低,且远程验配助听器成功率要低于现场验配助听器成功率,但不具有统计学意义(P>0.05)。结论大多数感音神经性耳聋患者听力下降只有通过听力补偿的方式得到改善。远程专业技师验配助听器技术对推进我国基层医院的规范验配助听器起到了积极促进的作用。通过总结我院远程专业技师验配和现场专业技师验配助听器的工作经验,总结我院助听器验配成功率较低的原因,以更好地开展验配助听器的工作。%ObjectiveFound to sensorineural deafness were present during the hearing aid iftting problems, preliminary analysis of low power hearing aids dubbed the reasons as to improve primary hospital examination of paired power purposes.Methods Remote professional technicians fitting (38 cases) by comparing sensorineural deafness and hearing aid iftting site professional technicians (40) success rate, analyze the causes of hearing aid iftting failure.ResultsThe success rate of local and remote hearing aid iftting are both low, Furthermore the latter is more low at our hospital, but this phenomenon is not statistical signiifcance(P>0.05).Conclusion Most of the sensorineural deafness can not be cured entirely, this illness can be gradually improved only through some hearing compensating facility. The remote hearing aid iftting will have a positive role on improving the normative operation level in basic hospital. We attempt to find the low success rate of hearing aid iftting by compare the results

  7. Percepção de idosos sobre o uso de AASI concedido pelo Sistema Único de Saúde Elderly perception on the use of hearing aids given by the health ystem (SUS

    Directory of Open Access Journals (Sweden)

    Indiara de Mesquita Fialho

    2009-06-01

    Full Text Available OBJETIVO: conhecer a percepção de idosos sobre o uso de aparelhos de amplificação sonora individuais (AASI concedidos pelo Sistema Único de Saúde (SUS. MÉTODOS: estudo de caráter qualitativo. Foram realizadas entrevistas semi-estruturadas com 19 idosos, entre 60 e 86 anos, com adaptação binaural e tempo de uso de AASI entre seis meses e um ano. As entrevistas foram gravadas e transcritas para posterior leitura e análise temática. As categorias estabelecidas foram: dificuldades de comunicação sem AASI; o acesso ao AASI e o processo de adaptação ao uso; o impacto do uso do AASI na comunicação. RESULTADOS: a dificuldade para se comunicar foi maior em situações em que há várias pessoas conversando; a dificuldade está em entender e não em ouvir, demonstrando uma preocupação em ressaltar o que sentem em ser surdo. A maioria dos participantes não realizou a adaptação do AASI anteriormente por não ter condições financeiras e revela que o que possibilitou o acesso foi a implantação do Serviço de Atenção à Saúde Auditiva. As dificuldades encontradas no processo de adaptação foram: mudança na percepção da própria voz, dificuldade de percepção de fala em ambiente ruidoso e no telefone. Relataram benefício com o uso de AASI na comunicação com familiares e com estranhos. CONCLUSÃO: destaca-se a importância do processo de acompanhamento para que as dificuldades de adaptação possam ser detectadas e minimizadas, para que efetivamente o sujeito obtenha benefício e satisfação com este tratamento.PURPOSE: to know elderly perception of hearing aids use given by the health system (SUS. METHODS: qualitative study. Semi-structured interviews were carried out with 19 subjects with age ranging from 60 to 86 years, with binaural adaptation and using hearing aids from six months to one year. The interviews were recorded and transcribed for further reading and thematic analysis. The settled categories were

  8. Are Experienced Hearing Aid Users Faster at Grasping the Meaning of a Sentence Than Inexperienced Users? An Eye-Tracking Study

    Science.gov (United States)

    Kollmeier, Birger; Neher, Tobias

    2016-01-01

    This study assessed the effects of hearing aid (HA) experience on how quickly a participant can grasp the meaning of an acoustic sentence-in-noise stimulus presented together with two similar pictures that either correctly (target) or incorrectly (competitor) depict the meaning conveyed by the sentence. Using an eye tracker, the time taken by the participant to start fixating the target (the processing time) was measured for two levels of linguistic complexity (low vs. high) and three HA conditions: clinical linear amplification (National Acoustic Laboratories-Revised), single-microphone noise reduction with National Acoustic Laboratories-Revised, and linear amplification ensuring a sensation level of ≥ 15 dB up to at least 4 kHz for the speech material used here. Timed button presses to the target stimuli after the end of the sentences (offline reaction times) were also collected. Groups of experienced (eHA) and inexperienced (iHA) HA users matched in terms of age, hearing loss, and working memory capacity took part (N = 15 each). For the offline reaction times, no effects were found. In contrast, processing times increased with linguistic complexity. Furthermore, for all HA conditions, processing times were longer (poorer) for the iHA group than for the eHA group, despite comparable speech recognition performance. Taken together, these results indicate that processing times are more sensitive to speech processing-related factors than offline reaction times. Furthermore, they support the idea that HA experience positively impacts the ability to process noisy speech quickly, irrespective of the precise gain characteristics. PMID:27595793

  9. 广州市黄埔地区听力损失患者助听器使用状况及影响因素调查%Investigation on service condition of hearing aid among hearing impairment patients and related influential factors in Huangpu district, Guangzhou

    Institute of Scientific and Technical Information of China (English)

    朱玉辉; 卢次勇; 叶寓; 李伟钢; 温则委; 党华

    2013-01-01

    Objective To estimate the prevalence of hearing aid use among patients with hearing impairment and explore possible factors influencing the adoption of hearing aid.Methods A cross-sectional survey among hearing impairment in the cross in Guangdong province was carried out from March to June 2012.Questionnaire-based interviews were conducted to collect information including socio-demographics,hearing aid use patterns and evaluation of using effects.Results Among all these patients,55.9% and 44.1% were male and female respectively,the mean age was (66.8 ± 11.4) years.The current prevalence of this survey was 22.4%.Most widely used hearing aid was behind the ear (50%).About 72.7% of the users were satisfied with the hearing aid.Multilevel logistic regression showed that:gender,age,marital status,salary and education status were not significantly related to hearing aid use.Conclusion The current prevalence of hearing aid use is low,which indicates that some related departments should take effective measures to improve the hearing conditions of partially-hearing people.%目的 探讨广东省黄埔地区听力损失患者的助听器使用率及其影响因素.方法 采用横断面研究方法对2012年3月至6月广州市黄埔区红会医院耳鼻喉科的164例听力损失的门诊病例进行一对一问卷调查,调查内容包括一般人口学特征、助听器使用相关行为、助听器使用效果评价.结果 调查的152例听力损失患者中男性85例(55.9%),女性67例(44.1%),平均年龄(66.8±11.4)岁;152例听力损失患者助听器使用者为34例(22.4%),助听器使用类型最多为耳背式(50%),72.7%的助听器使用者表示满意使用效果.logistic回归分析表明,性别、年龄以及受教育程度等一般人口学信息与助听器的使用率间无统计学关联.结论 广东省黄埔地区听力损失患者助听器的使用率较低,提醒有关部门应采取相应措施改善弱听人士的听力状况.

  10. The Factors Affecting the Effects of Hearing Aids on Presbycusis Patients%影响老年性聋患者助听效果的相关因素分析

    Institute of Scientific and Technical Information of China (English)

    王翠霞; 陈贤明; 罗萍; 杨帆; 黄少华; 陈十燕; 李建忠

    2014-01-01

    目的:调查老年感音神经性聋患者配戴助听器后的助听效果,分析其影响因素。方法采用日常生活助听满意度量表对120例验配了助听器的老年性聋患者进行调查,统计每例患者的各项得分及总均分,并根据患者年龄、性别、教育程度、平均听阈、助听器类型、佩戴方式、佩戴时长、每日使用时长、自感听力下降时长等9个因素进行分组,采用单因素分析及逐步多元回归分析进行统计处理,筛选影响助听效果的主要因素。结果教育程度高、每日佩戴时间长、双耳佩戴者得分高于教育程度低、每日佩戴时间短、单耳佩戴者(P<0.01);年长者得分优于年少者(P<0.01);自感听力下降时长短者得分高于自感听力下降时长长者(P<0.01);总体满意度方面,教育程度高、每日佩戴时间长者得分高于教育程度低、每日佩戴时间短者(P<0.01),性别因素对助听效果无影响。结论影响老年性聋患者助听效果的因素较多,其中教育程度、每日佩戴时长是主要因素,双耳佩戴、自感听力下降时间短、年长者助听效果满意度高,而性别对助听效果无明显影响。%Objective To analyze the factors affecting the effects of hearing aids in presbycusis patients . Methods One hundred and twenty cases with presbycusis were investigated by using general data and the Satisfac-tion with Amplification in Daily Life questionnaire(SADL) .The individual scores and total scores of all the subjects were collected together with the personal information ,including age ,gender ,degree of education ,pure-tone aver-age ,hearing aid type ,monaural/binaural status ,total hearing aid experience ,daily use time ,the time of perceived hearing difficulty .A single factor analysis and multiple stepwise regression analysis were used to filter out main fac-tors influencing the effect of hearing aids .Results The

  11. Practical Technologies of Feedback Suppression of Modern Hearing Aids%现代助听器反馈啸叫抑制的实用技术

    Institute of Scientific and Technical Information of China (English)

    张戌宝

    2015-01-01

    The feedback(FB) squealing suppression technologies of modern hearing aids include two types of adaptive cancellation, static initialization plus dynamic evaluation and only dynamic evaluation, as well as incorporated technologies for improving their performances, delay, highband filtering, frequency shift and detection, etc. This paper describes the essential concepts and the practical working principles related to these technologies, summaries applied approaches of various technologies.%现代助听器反馈啸叫抑制技术包括静态初始化加动态估计和仅动态估计两类自适应相消(adaptive cancellation),以及为了改进其性能而并入的延时、高通滤波、频移和检测等技术。本文阐述了与这些技术有关的基础概念和实际工作原理,总结了不同技术的应用途径。

  12. 助听器无线调频系统临床应用研究%The study on the clinical application of hearing aids FM combination system

    Institute of Scientific and Technical Information of China (English)

    陈振声; 陈曦

    2006-01-01

    目的 观察助听器无线调频系统(hearing aid-frequency modulated,HA-FM)对于助听器听力补偿效果的影响.方法 在不同的声音环境下,分别采用麦克风(microphone,M)、无线调频(frequencymodulated,FM),无线调频+麦克风(frequency modulated+microphone,FM+M)三种输入方式,观察HA-FM使用者的言语听辨率和言语交流变化.结果 在安静环境下,近距离交流时,HA-FM的不同输入方式对言语听辨没有影响,在嘈杂环境下或远距离交流时,FM输入方式的听辨率几乎不受影响,M,FM+M的听辨率则明显下降.结论 在复杂的声音环境中,HA-FM是一种非常有用的助听辅助设备.

  13. Design of Continuous-Time Filter for Hearing Aid Application%应用于助听器的连续时间滤波器设计

    Institute of Scientific and Technical Information of China (English)

    彭良玉; 周细凤; 张春熹; 黄满池

    2007-01-01

    提出了一种采用电流控制传送器(CCCⅡ)构成的连续时间双二阶滤波器电路,该滤波器可以应用于助听器和其他的信号处理设备中,能对任意特定频率的信号进行放大或者衰减,易于实现大规模MOS电路的集成.理论分析和计算机仿真表明所提电路方案正确,是可行的.%In this paper, a continuous-time biquadratic filter using Current Controlled Conveyors (CCCⅡ) is proposed,which can be used in Hearing Aids and in other Analog Signal Processing applications. The proposed filter has the capability of amplifying as well attenuating the signal of any desired frequency band. This design can be easily implemented in MOS VLSI thereby allowing electronic tuning of the filter parameters. Theoretical analysis and computer simulation indicate that the proposed circuit is effective and feasible.

  14. Development of an Economic and Suitable Low Noise Hearing Aid System%一种经济适用的低噪音助听系统研制

    Institute of Scientific and Technical Information of China (English)

    温武; 陈耀华; 古鹏; 潘庆浩

    2011-01-01

    In order to solve the strength difference problem of the audio signal received by microphone in the complex sound field environment, according to NPN transistor conducting principle, electrets condenser microphones, MC33202 dual operational amplifiers and a number of devices were used to design an audio signal processing circuit based on the AGC automatic gain control amplifier. The circuit facilitates a low-noise hearing aid system. The result of experiments shows that the circuit functions well: not only reduces noise, but also produces a good audio signal. It is very useful.%针对声传感器在复杂的音场环境下接收信号的幅度强弱相差较大的情况,利用驻极体电容式传声器、双运算放大器MC33202和若干无源器件,运用NPN三极管在饱和状态下的导电机理,研制了以低成本AGC自动增益控制放大器的声信号处理电路为核心的低噪音助听系统.实验结果表明,系统的功能电路实现效果良好,既降低了噪声,又恢复了良好的语音信号,具有较高的实用价值.

  15. Expectation as a factor of influence on the success of use of hearing aids in elderly individuals

    Directory of Open Access Journals (Sweden)

    Schuster, Larissa Cristina

    2012-01-01

    Full Text Available Introduction: Auditory prosthesis is distinguished in function of the lesser technologies that become them each time, more powerful and efficient. The marketing can generate unreal expectations how much to the results with the amplification use, mainly in inexperienced individuals. Objective: To verify the relation between expectations and success of the process of election and adaptation of auditory prosthesis in aged. Method: Clinical and experimental study, 16 aged, inexperienced individuals with the amplification use, the election and adaptation of auditory prosthesis had been evaluated 15 days before and after. Questionnaire for evaluation of the expectations of aged the adult individual was used "/, new user of auditory prosthesis", Hearing Handicap Inventory will be the Elderly/Screening Version, for evaluation of the perception of the restriction of participation and the International Questionnaire - Device of Amplification Sonora Individual (QI-AASI, to verify the subjective benefit with the use of the auditory prosthesis. The Percentile Index of Recognition of Sentences in Silence was determined (IPRSS, by means of the test Lists of Sentences in Portuguese to verify the objective benefit of the adaptation. The data had been analyzed by means of not-parametric test, with level of significance of 5%. Results: The entire sample presented positive expectations. Subjectively benefit for the reduction of the perception of the participation restriction and for the positive evaluation of the adaptation, evidenced for the QI-AASI was verified. Objective the improvement of the IPRSS with the use of auditory prosthesis also evidenced benefits. Conclusion: The expectation how much to the results with the amplification use, it was factor of negative influence in the success of the process of election and adaptation of auditory prosthesis, in the subjective scope.

  16. Effect of rehabilitation for prelingual deaf children who use cochlear implants in conjunction with hearing aids in the opposite ears%语前聋患儿一侧人工耳蜗对侧助听器效果分析

    Institute of Scientific and Technical Information of China (English)

    田彦静; 周慧芳; 张静; 杨东; 许轶; 郭玉玺

    2012-01-01

    目的:通过对人工耳蜗植入对侧耳不同听力损失的患儿联合使用助听器与人工耳蜗语前聋患儿的听觉、语言及学习能力进行评估和比较,探索对患儿更为有效的助听方法,帮助患儿获得最大限度的言语交流。方法:将30例3~6岁语前聋患儿按照植入人工耳蜗对侧耳听力损失程度及是否佩戴助听器,分为一侧人工耳蜗+对侧重度听力损失助听器组(CI+SHA组)、一侧人工耳蜗+对侧极重度听力损失助听器组(CI+PHA组)、单耳人工耳蜗组(CI组).评估各组在康复3、6、9、12、15、18个月时听觉、语言及学习能力,并记录结果。结果:随着术后康复时间的延长,聋儿听觉、语言及学习能力逐渐提高(P<0.05),CI+SHA组听觉能力优于CI+PHA组及CI组(均P<0.05),语言能力及学习能力无明显差异(P>0.05)。结论:语前聋患儿单耳人工耳蜗植入后,若对侧耳尚有残余听力,佩戴助听器后听觉能力效果显著,长期佩戴有助于患儿的康复。%Objective; To compare the effect of rehabilitation of prelingual deaf children who used a cochlear implant(CI) in one ear and a hearing aids in the opposite ear while the hearing level of the opposite ears are different. Hearing ability,language ability and learning ability was included in the content. The aim of this research is to investigate better style of rehabilitation,and to offer the best help to the prelingual deaf children. Method: According to the hearing level of the ear opposite to the one wearing a cochlear implant and whether the opposite ear wear a hearing aid or not,30 prelingual deaf children were divided into three groups, including cochlear implant with opposite severe hearing loss and hearing aid ear(CH-SHA), cochlear implant with opposite profound hearing loss and hearing aid ear(CI+PHA) ,cochlear implant only(CI). The effect of rehabilitation was assessed in six different times(3,6, 9,12,15 and 18 months after the cochlear

  17. Investigation of symphony orchestra musicians' use of hearing protectors

    DEFF Research Database (Denmark)

    Poulsen, Torben; Koskinen, Heli

    2010-01-01

    that musicians are aware of the dangers of loud music, that they only use hearing protectors to some extent, and that hearing protector is sometimes used only in one ear. Musicians are concerned about their hearing and musicians that experience hearing problems use hearing protectors more frequently....... At present an investigation is performed about the use of hearing aids as hearing protectors by symphony orchestra musicians. Preliminary results from this investigation will be presented at the conference....

  18. Study on the Effect of Guidance Intervention on Elderly Hearing Impaired Patients with Hearing Aids%指导干预对老年听力障碍患者配戴助听器后助听效果的影响

    Institute of Scientific and Technical Information of China (English)

    黄敏; 邓小梅

    2014-01-01

    Objective To evaluate the effect of guidance intervention on elderly hearing impaired patients with hearing aids .Methods 60 elderly with hearing impairment were randomly divided into experiment group and control group and received questionnaires .Experi-mental group had additional lectures of hearing aids and personalized education .Results The score was statistically significant (P<0.05) after the intervention in two groups and the score difference ( after and before intervention ) was better in the experimental group ( P<0.05 ) .Conclusion Intervention can effectively improve the compliance of the elderly in wearing the hearing aid .%目的:评估指导干预对老年听力障碍患者配戴助听器后助听效果的影响。方法选取60例老年听力障碍患者,随机分为干预组和对照组,每组各30例。对照组行常规指导,干预组另外接受有关助听器知识的讲座以及个性化宣教,对干预前后进行问卷调查。结果对照组和干预组在干预前后问卷得分均有统计学差异( P<0.05);统计两组干预前后的得分差值,发现干预组的助听效果优于对照组( P<0.05)。结论干预措施可以有效提高老年听力障碍患者在助听器使用过程中依从性。

  19. A current mode feed-forward gain control system for a 0.8 V CMOS hearing aid*

    Institute of Scientific and Technical Information of China (English)

    Li Fanyang; Yang Haigang; Liu Fei; Yin Tao

    2011-01-01

    A current mode feed-forward gain control (CMFGC) technique is presented, which is applied in the front-end system of a heating aid chip. Compared with conventional automatic gain control (AGC), CMFGC significantly improves the total harmonic distortion (THD) by digital gain control. To attain the digital gain control codes according to the extremely weak output signal from the microphone, a rectifier and a state controller implemented in current mode are proposed. A prototype chip has been designed based on a 0.13μm standard CMOS process. The measurement results show that the supply voltage can be as low as 0.6 V. And with the 0.8 V supply voltage, the THD is improved and below 0.06% (-64 dB) at the output level of 500 mVp-p, yet the power consumption is limited to 40μW. In addition, the input referred noise is only 4μVrms and the maximum gain is maintained at 33 dB.

  20. Opportunistic hearing screening in elderly inpatients

    Directory of Open Access Journals (Sweden)

    Krishan Ramdoo

    2014-04-01

    Full Text Available Objective: To determine the prevalence of occult hearing loss in elderly inpatients, to evaluate feasibility of opportunistic hearing screening and to determine subsequent provision of hearing aids. Materials and methods: Subjects (>65 years were recruited from five elderly care wards. Hearing loss was detected by a ward-based hearing screen comprising patient-reported assessment of hearing disability and a whisper test. Subjects failing the whisper test or reporting hearing difficulties were offered formal audiological assessment. Results: Screening was performed on 51 patients aged between 70 and 95 years. Of the patients, 21 (41% reported hearing loss and 16 (31% failed the whisper test. A total of 37 patients (73% were referred for audiological assessment with 17 (33% found to have aidable hearing loss and 11 were fitted with hearing aids (22%. Discussion: This study highlights the high prevalence of occult hearing loss in elderly inpatients. Easy two-step screening can accurately identify patients with undiagnosed deafness resulting in significant proportions receiving hearing aids. Key sentences Approximately 14% of the elderly population use hearing aids despite a reported prevalence of deafness in up to 55%. The use of hearing aids is associated with an improvement in physical, emotional, mental and social well-being. An easy screening test for hearing loss consists of patient-reported hearing loss and a whisper test. Opportunistic screening of elderly inpatients resulted in referral of 73% of screened patients for formal audiology. Of the screened patients, 22% were provided with hearing aids.

  1. A satisfação e o desempenho de usuários de próteses auditivas atendidos em um programa de atenção à saúde auditiva Satisfaction and performance of hearing aids users assisted in a Hearing Health Care Program

    Directory of Open Access Journals (Sweden)

    Aline da Silva Lopes

    2011-08-01

    Full Text Available OBJETIVO: avaliar o desempenho e a satisfação com o uso das próteses auditivas nos pacientes atendidos no convênio APAC-UFSM, após um ano de adaptação. MÉTODOS: analisou-se 49 sujeitos, com perda auditiva do tipo neurossensorial ou mista, de grau leve a severo na melhor orelha, divididos em adultos e idosos. Realizou-se a pesquisa dos Limiares e Índices Percentuais de Reconhecimento de Sentenças no Silêncio e no Ruído, em campo livre, por meio do teste Listas de Sentenças em Português; e aplicou-se o questionário de satisfação, International Outcome Inventory for Hearing Aids. Realizaram-se os testes na mesma sessão, em dois momentos distintos, sendo o primeiro, sem o uso das próteses auditivas e o segundo, usando as mesmas. RESULTADOS: houve diferença significante no desempenho dos indivíduos em ambos os grupos, no procedimento realizado no silêncio. Apesar de o desempenho com próteses auditivas não ter apresentado melhora significante no ruído, os pacientes apresentaram respostas satisfatórias no questionário. Na comparação entre os grupos, não se observou diferença significante quanto ao desempenho e satisfação. CONCLUSÃO: a melhora significante do desempenho no silêncio vai ao encontro do relato dos pacientes. O questionário evidenciou que a maioria referiu fazer uso efetivo das próteses auditivas e considerou ter um benefício muito satisfatório. Apesar de uma parcela significativa referir moderada ou bastante dificuldade residual, a maioria considerou que o uso das próteses auditivas vale muito ou bastante a pena.PURPOSE: to assess the performance and satisfaction using hearing aids in patients assisted in the APAC-UFSM partnership, after a one-year fitting. METHODS: 49 subjects having mild to severe sensorineural or mixed hearing loss in the better ear were analyzed. They were divided into adults and elderly groups. The research of Sentence Recognition Threshold and Percent Indexes in Quiet and in

  2. Acoustic Feedback Cancellation Based on Parallel Gradient Projection in Hearing Aids%数字助听器的并行梯度投影回声抵消

    Institute of Scientific and Technical Information of China (English)

    梁瑞宇; 赵力; 王青云; 奚吉; 张学武

    2012-01-01

    自适应回声抵消是消除助听器回声啸叫的有效方法.针对回声路径评估偏差大的问题,文中提出线性预测一并行梯度投影算法,通过对助听器输出信号进行线性预测来生成解相关FIR滤波器,获得解相关信号.系统利用解相关信号构建包含回声路径的凸优化方程,并设计并行梯度投影算法求解该方程,实现回声路径的估计.实验结果表明算法在收敛速度、稳定性和精度等方面改进显著.%Adaptive feedback cancellation is an effective way to suppress echo howling in hearing aids. However, when the external input signal is correlated with the receiver input signal, the estimate of the feedback path contains a large error. This paper proposes a linear prediction-parallel gradient projection algorithm, which generates a FIR filter to obtain the decorrelation signal by linear prediction of the output signals. The decorrelation signal is then used to build a convex optimization equation. With the parallel gradient projection algorithm, the equation is solved to evaluate the echo path. Simulation results show clear improvement in convergence, stability and precision.

  3. The Usage of Mandarin Acceptable Noise Level Test in Outcome Measurements of Hearing Aids%可接受噪声级测试在助听器效果评估中的初步应用

    Institute of Scientific and Technical Information of China (English)

    陈建勇; 张华; 陈雪清; 吴燕君; 孔颖; 郭连生; 李靖; 李玉玲

    2011-01-01

    目的 探讨可接受噪声级(acceptable noise level,ANL)测试在普通话听障人群助听器效果评估中的应用.方法 选取佩带助听器3个月~3年的中度到中重度听障者37例,根据助听器使用情况将其分为全天使用助听器组、部分时间使用组和拒绝使用组;利用前期经过等价性评估的普通话可接受噪声级测试材料,对三组人群依次进行裸耳和助听下的ANL测试,日常生活助听器满意度问卷(the satisfaction with amplification in daily life,SADL)评估,分析三组ANL值和SADL得分的差异.结果 ①37例听障者个体自身裸耳和助听下最舒适响度级(most comfortable level,MCL)、背景噪声级(background noise level,BNL)值差异有统计学意义(P0.05);②全天使用助听器组裸耳下ANL值明显低于部分时间和拒绝使用助听器组(P0.05);④Pearson相关分析显示:裸耳ANL值与听障者性别、年龄均无相关性(P>0.05),与气导平均听阈存在较弱相关性(r=0.460,P=0.004).结论 可接受噪声级测试可反映个体耐受噪声能力的大小,可初步利用其来预估助听器选配效果.%Objective The purpose of this study was to compare the difference of ANL value among the full -time hearing aid users, part-time users, and nonusers,and then to determine the relationship between the hearing aid outcomes of the three groups and ANL values. Methods 37 hearing aid users for 3 months to 3 years were selected for this research. Listeners were assigned to one of the three groups based on patterns of hearing aid use:full-time use (whenever hearing aids are needed), part-time use (occasional use), and non use. ANL test was measured for the three groups using the mandarin acceptable noise level test material. The mandarin ANL test was measured in aided and unaided conditions for each group; and the outiones were evaluated by SADL. The results were analyzed statistically with SPSS13.0 to determine the differences of the ANL value for the

  4. Perfil dos usuários de AASI com vistas à amplificação, cognição e processamento auditivo Profile of hearing aid users with a view to amplification, cognition and auditory processing

    Directory of Open Access Journals (Sweden)

    Sandra Nunes Alves Viacelli

    2012-01-01

    Full Text Available OBJETIVO: estabelecer o perfil dos usuários de AASI atendidos no Centro de Saúde Auditiva com vistas à amplificação, cognição e processamento auditivo (PA. MÉTODO: participaram do estudo 59 sujeitos com idades entre 41 e 92 anos. Na primeira etapa, realizou-se a coleta dos dados dos prontuários: dados das avaliações audiológica e otorrinolaringológica, anamnese, teste de fala com o AASI em uso, dados do molde e do AASI, orientações recebidas e resultados do treinamento auditivo. Na segunda etapa, foram realizados os testes de Dicótico de Dígitos (DD e Teste de Padrão de Frequência (TPF, Avaliação da Doença de Alzheimer-Cognitiva (ADAS-Cog e a Escala de Depressão Geriátrica (EDG-15. Nessa etapa, participaram 47 sujeitos. RESULTADOS: em relação à idade, 67,80% tem 60 anos ou mais. Os aspectos mais relatados na anamnese foram tontura e zumbido e exposição ao ruído. Na avaliação audiológica, identificou-se perda auditiva neurossensorial de grau moderado e curva descendente como os mais frequentes, coincidindo com os achados imitanciométricos: curva tipo A com reflexos ausentes. No treinamento auditivo, as habilidades que mais apresentaram alterações foram identificação e compreensão. Nos testes DD e TPF, as médias de acertos ficaram abaixo dos padrões de normalidade. No ADAS-Cog, os maiores escores foram palavra evocada, reconhecimento de palavra e compreensão. No EDG, 20 sujeitos apresentam características sugestivas de depressão. CONCLUSÃO: foi possível estabelecer o perfil dos usuários de AASI com vistas à amplificação, cognição e ao PA.PURPOSE: to establish the hearing aid users' profile attended in the Hearing Health Center with a view to amplification, cognition and auditory processing (AP. Method: 59 individuals participated in this study aged between 41 and 92 years old. In the first stage, it was realized the data assortment through the audiology and otolaryngologist evaluations, first

  5. Correlação entre as restrições de participação em atividades de vida diária e o benefício do uso de próteses auditivas em adultos e idosos Correlation between the handicap and the benefit of hearing aid use in adults and elderly

    Directory of Open Access Journals (Sweden)

    Vívian Baptista da Luz

    2011-06-01

    Full Text Available OBJETIVO: Estudar o benefício obtido com o uso de próteses auditivas em ambientes acusticamente favoráveis à comunicação, reverberantes, ruidosos e com sons aversivos e correlacioná-lo com as restrições de participação e limitações de atividades de adultos e idosos deficientes auditivos. MÉTODOS: Foram avaliados 42 indivíduos atendidos na instituição em que o estudo foi realizado. Estes responderam aos questionários Hearing Handicap Inventory for Elderly ou for Adults e Abbreviated Profile of Hearing Aid Benefit, no momento da dispensação das próteses auditivas e após três meses de uso efetivo destas. Foram estudadas as restrições de participação, limitações auditivas e o benefício com o uso de próteses auditivas. Os resultados foram analisados estatisticamente. RESULTADOS: Houve diferenças entre os escores dos questionários Hearing Handicap Inventory for Elderly e for Adults e entre os das subescalas Facilidade de Comunicação, Ambientes Reverberantes e Ruído Ambiental do questionário Abbreviated Profile of Hearing Aid Benefit, comparando as condições sem e com próteses auditivas. Houve correlação positiva entre o benefício mensurado na subescala Facilidade de Comunicação, nos idosos, e Ruído Ambiental, nos adultos, com a redução da restrição de participação. CONCLUSÃO: Houve redução das limitações de atividades e da restrição de participação em atividades de vida diária em adultos e idosos com o uso de próteses auditivas. Quanto maior o benefício obtido na subescala Facilidade de Comunicação em idosos e o benefício na subescala Ruído Ambiental nos adultos, maior a redução da restrição de participação.PURPOSE: To study the benefit obtained by the use of hearing aids in environments acoustically favorable to communication, reverberant, noisy and with aversive sounds, and to correlate the benefit with the handicap of adults and elderly with hearing loss. METHODS

  6. Solid state silicon based condenser microphone for hearing aid, has transducer chip and IC chip between intermediate chip and openings on both sides of intermediate chip, to allow sound towards diaphragm

    DEFF Research Database (Denmark)

    2000-01-01

    NOVELTY - A silicon transducer chip (1) has parallel backplate and movable diaphragm (12) and forms an electrical capacitor. The chip and electronic circuit chip (3) are provided on either sides of intermediate chip (2). The chip (2) has openings (4,10) between two sides of the chip, to allow sound...... towards diaphragm. Surface of the chip (2) has electrical conductors (14) to connect chip with IC chip (3). USE - For use in miniature electroacoustic devices such as hearing aid. ADVANTAGE - Since sound inlet is covered by filter, dust, moisture and other impurities do not obstruct interior and sound...

  7. Hearing health care provision in the national systems of Australia, Denmark, Finland, Germany and Switzerland

    DEFF Research Database (Denmark)

    Egbert, Maria; Groeber, Simone; Damsø Johansen, Jette;

    2012-01-01

    the similarities and differences in these five countries’ health care systems in order to find features which may contribute to (non-)use of hearing instruments. After a general overview of the commonalities, we compare legal provisions, medical indication for prescription of a hearing aid, accessing health care......The five western countries represented in this volume share highly developed medical and technological provisions for hearing health, yet they differ in the compliance rates for hearing aid usage. A contributing factor may lie in the diversity of the national health care systems. We examine...... and diagnosing hearing impairment, selection and fitting of hearing aid, costs of hearing aids, and help to learn how to live with hearing loss and using a hearing aid. Finally, we reflect on how aspects of the health care systems may contribute to hearing aid use....

  8. The Effectiveness of Hearing Aids in the Treatment for Tinnitus Patients with Sensorineural Hearing Loss%配戴助听器治疗伴有感音神经性听力减退的耳鸣患者的临床初探

    Institute of Scientific and Technical Information of China (English)

    徐万红; 向阳红; 邓安春; 刘庆顺

    2013-01-01

      目的探讨配戴助听器治疗伴有感音神经性听力减退的耳鸣患者的临床疗效.方法根据入组时的听力图类型将56名伴有感音神经性听力减退的耳鸣患者分为平坦型、上升型、下降型和切迹型4组,采用耳鸣残疾评估量表评估其配戴助听器前后耳鸣的变化程度,了解配戴助听器治疗伴有感音神经性听力减退的耳鸣患者的疗效.结果配戴助听器半年后,耳鸣情况得到改善,无论从THI总体得分,还是分别从功能性、情感性、严重性三个方面的评分来看,配戴助听器后均有明显改善(P0.05).结论配戴助听器对部分伴有感音神经性听力减退的耳鸣患者有效.%Objective To study the efficacy of the application of hearing aids to the treatment of tinnitus patients with sensorineural hearing loss. Methods The tinnitus patients were divided into 4 groups according to the audiometric curve types: flat, ascending, descending and notched. The Tinnitus Handicap Inventory (THI) was used to assess the tinnitus degrees of the patients. Results Half a year after wearing hearing aids, the tinnitus of the patients was significantly reduced according to the total THI scores or functional, emotional and catastrophic scores(P0.05). Conclusion Appropriate hearing aids are effective in the treatment for some tinnitus patients with sensorineural hearing loss.

  9. Hearing Impairment

    Science.gov (United States)

    ... hearing loss is present at birth. Acquired hearing loss happens later in life — during childhood, the teen years, or in adulthood — ... for your ears to avoid a permanent hearing loss. See your doctor right away ... basis. What's Life Like for People Who Are Hearing Impaired? For ...

  10. Hearing Screening

    Science.gov (United States)

    Johnson-Curiskis, Nanette

    2012-01-01

    Hearing levels are threatened by modern life--headsets for music, rock concerts, traffic noises, etc. It is crucial we know our hearing levels so that we can draw attention to potential problems. This exercise requires that students receive a hearing screening for their benefit as well as for making the connection of hearing to listening.

  11. The outcome analysis of different age paragraph hearing aid users%不同年龄段助听器佩戴效果及满意度的评估

    Institute of Scientific and Technical Information of China (English)

    许庆庆; 周慧芳; 张静; 郭玉玺; 王秀珍

    2012-01-01

    目的:比较分析不同年龄段听力障碍患者助听器佩戴效果及满意度.方法:按年龄将90例听力障碍患者分为3组,19~40岁为A组,41~60岁为B组,61~80岁为C组;分别于助听器佩戴后6周、6个月、12个月评估其助听效果及满意度.结果:助听器每日生活使用满意度调查问卷评分,积极作用、服务与花费以及个人形象A组得分均高于B组和C组,B组得分均高于C组(P<0.01);负面作用A组得分均低于B组和C组,B组得分均低于C组(P<0.01).助听器效果国际性调查问卷评分,A组得分均高于B组和C组,B组得分均高于C组(P<0.01).结论:随佩戴时间的延长各年龄段人群助听器佩戴效果及满意度都是逐渐增加的,但随年龄的增长佩戴效果及满意度是逐渐降低的.%Objectives To compare and analysis outcomes of different age paragraph hearing aid users by questionnaires. Method, The questionnaire was deployed to 90 hearing aid users, 40 females and 50 male, with ages between 19 and 80 years-from junior high school education to university education, suffering binaural severe or moderate sensorineural deafness. The subjects were devided into 3 groups, the A group with ages between 19 and 40 years , the B group with ages between 41 and 60 years, the C group with ages between 61and 80 years. After being fitted with hearing aids for 6 weeks, 6 months and 12 months, SADL and IOI-HA were applied to evaluating 90 subjects. The study was carried out through face to face interview or by telephone. Result;There were significant differences in SADL scores of positive effect , service and Personal image among the 3 groups(P<0. 01). The scores of the A group was the highest ,and the B group was higher than the C group. On the contrary, there were significant differences in SADL scores of negative effect among the 3 groups( p<0. 01), with the scores of the A group being the lowest,and the B group being lower than the C group. There were also

  12. Human computer interaction and communication aids for hearing-impaired, deaf and deaf-blind people: Introduction to the special thematic session

    DEFF Research Database (Denmark)

    Bothe, Hans-Heinrich

    2008-01-01

    This paper gives ail overview and extends the Special Thematic Session (STS) oil research and development of technologies for hearing-impaired, deaf, and deaf-blind people. The topics of the session focus oil special equipment or services to improve communication and human computer interaction...

  13. Low empathy in deaf and hard of hearing (preadolescents compared to normal hearing controls.

    Directory of Open Access Journals (Sweden)

    Anouk P Netten

    Full Text Available The purpose of this study was to examine the level of empathy in deaf and hard of hearing (preadolescents compared to normal hearing controls and to define the influence of language and various hearing loss characteristics on the development of empathy.The study group (mean age 11.9 years consisted of 122 deaf and hard of hearing children (52 children with cochlear implants and 70 children with conventional hearing aids and 162 normal hearing children. The two groups were compared using self-reports, a parent-report and observation tasks to rate the children's level of empathy, their attendance to others' emotions, emotion recognition, and supportive behavior.Deaf and hard of hearing children reported lower levels of cognitive empathy and prosocial motivation than normal hearing children, regardless of their type of hearing device. The level of emotion recognition was equal in both groups. During observations, deaf and hard of hearing children showed more attention to the emotion evoking events but less supportive behavior compared to their normal hearing peers. Deaf and hard of hearing children attending mainstream education or using oral language show higher levels of cognitive empathy and prosocial motivation than deaf and hard of hearing children who use sign (supported language or attend special education. However, they are still outperformed by normal hearing children.Deaf and hard of hearing children, especially those in special education, show lower levels of empathy than normal hearing children, which can have consequences for initiating and maintaining relationships.

  14. Aceitação de protetores auditivos pelos componentes de banda instrumental e vocal Acceptance of hearing protection aids in members of an instrumental and voice music band

    Directory of Open Access Journals (Sweden)

    Maria Helena Mendes

    2007-12-01

    Full Text Available Existem barreiras para a efetiva proteção auditiva entre músicos. OBJETIVO: Verificar a aceitação de protetor auditivo pelos componentes de banda instrumental e vocal. MATERIAL E MÉTODO: Estudo prospectivo realizado com a Banda Municipal de Indaial, em 2005. O grupo de estudo consistiu de 34 componentes. Os níveis de pressão sonora foram mensurados durante um ensaio. Os sujeitos responderam questionários e realizaram audiometria tonal. Os limiares tonais dos componentes da banda foram comparados a um grupo controle. Ministrado palestra e distribuído protetores auditivos por 3 meses. RESULTADOS: Os níveis de pressão sonora variaram de 96,4 dB(A a 106,9 dB(A. As maiores queixas foram: incômodo a sons 58,8% e zumbido 47%. Ao compararmos a mediana dos limiares auditivos dos músicos com o grupo controle observou-se diferença significativa à direita nas freqüências de 4 e 6 kHz, e à esquerda nas freqüências de 3, 4 e 6 kHz. 77,1% referiram que a música pode ocasionar prejuízo auditivo. 56,2% referiram não ter gostado do protetor, 43,7% referiram ter gostado. CONCLUSÃO: Os sujeitos têm a informação sobre o risco, mas não há prevenção em relação aos efeitos auditivos, sugerindo a necessidade de campanhas periódicas e legislação específica aos profissionais ligados à música.There are barriers to effective hearing protection among musicians. AIM: To investigate the acceptance of hearing protection aids in members of an instrumental and voice music band. MATERIAL AND METHOD: A prospective study of 34 members of the Municipal Indaial Band. Sound pressure levels were measured during a rehearsal, indicating mean levels ranging from 96.4 dB(A to 106.9 dB(A. Subjects answered questionnaires and underwent audiometry. They attended a lecture in which folders and hearing protection aids were provided; subjects were asked to try using the protectors for 3 months. RESULTS: At the end of the study period, 56.2% reported not

  15. Abuses in Federal Student Aid Programs, Hearing Before the Permanent SubCommittee on Investigations of the Committee on Governmental Affairs. United States Senate, One Hundred First Congress, Second Session, Part 3: Lenders, Guarantee Agencies, Loan Servicers, and the Secondary Market (September 25, 26, 1990).

    Science.gov (United States)

    Congress of the U.S., Washington, DC. Senate Committee on Governmental Affairs.

    The congressional hearing report scrutinized the role of banks, guarantee agencies, student loan secondary markets, and loan servicers in the operation of federal student aid programs. Program weaknesses which have contributed towards to abuse and fraudulent practices of federally backed student loans were identified. Witnesses included officials…

  16. 国家助听器验配师体系下听力学本科教育探索%The Audiology Undergraduate Programme within the Framework of the National Hearing Aid Acoustician Qualiifcation System

    Institute of Scientific and Technical Information of China (English)

    徐飞

    2015-01-01

    This article discusses the current status and challenges of audiology personnel training in China based on the requirements of hearing aid acoustician qualification system and summarizes the experiences in audiology teaching in recent years. It points out that integration of the personnel training mode and qualification system will promote mutual development.%本文从我国助听器验配师体系要求出发,探讨了听力学人才培养的现状和挑战,总结了近年来在听力学教学中取得的经验,指出我国听力学人才培养模式应当与助听器验配师职业体系相互促进发展。

  17. Propriedades psicométricas do questionário internacional: aparelho de amplificação sonora individual Psychometric properties of the international otcome inventory for hearing AIDS

    Directory of Open Access Journals (Sweden)

    Marisa Gasparin

    2010-02-01

    Full Text Available Analisar as propriedades psicométricas de instrumentos de autoavaliação é primordial para verificar a confiabilidade e a validade dos testes, além de permitir a interpretação correta dos resultados. OBJETIVO: Verificar as propriedades psicométricas do IOI-HA (International Outcome Inventory for Hearing Aids na versão em português, denominada QI-AASI (Questionário Internacional - Aparelho de Amplificação Sonora Individual, em termos de consistência interna, correlação entre os itens e reprodutibilidade. FORMA DE ESTUDO: Descritivo, observacional e transversal. MATERIAL E MÉTODO: O questionário foi aplicado em 53 usuários de AASI, 34 do sexo feminino e 19 do sexo masculino, com idades compreendidas entre 19 e 92 anos e nível de instrução de ensino básico incompleto a ensino superior completo, abrangendo sujeitos com amplificação binaural e monoaural. RESULTADOS: O QI-AASI apresentou um Alpha de Cronbach em 0,69. Na correlação entre os itens foram verificadas várias correlações significativas. O instrumento se reproduziu de forma adequada, exceto para o item 6, que apresentou diferença significativa na comparação entre o teste e o reteste. CONCLUSÕES: Sugere-se o uso do QI-AASI no processo de reabilitação de usuários de prótese (s auditiva (s, porém considera-se que o questionário pode ser de difícil compreensão para sujeitos com baixo nível sociocultural na situação autoaplicada.It is paramount to assess the psychometric properties of self-assessment tools in order to check the tests' reliability and validity, also to enable proper outcome interpretation. AIM: to check the psychometric properties of the IOI-HA (International Outcome Inventory for Hearing Aids in its Portuguese version, called QI-AASI (International Questionnaire - Individual Sound Amplification Device, in terms of internal uniformity, correlation between the items and reproducibility. STUDY DESIGN: descriptive, observational and cross

  18. 轻度认知障碍对老年聋患者助听器效果的影响%The influence of mild cognitive impairment on efficacy of hearing aids in patients with presbycusis

    Institute of Scientific and Technical Information of China (English)

    刘花; 龚宏勋; 陈贤明; 张超兰; 郑智生; 罗萍

    2016-01-01

    目的:研究轻度认知功能障碍对老年性聋患者佩戴助听器满意度及受益度的影响。方法依据研究入选标准选取于南京军区福州总医院听力检查中心验配并佩戴助听器6个月以上的老年性耳聋患者92例作为研究对象。根据蒙特利尔认知评价量表得分将研究对象分为两组,即认知功能正常组和轻度认知功能障碍组。使用助听器每日生活使用满意度调查表(SADL)、助听器效果国际性调查问卷(IOI-HA)进行问卷调查。结果认知功能正常组患者SADL总均分、积极作用、服务与价格两部分得分及IOI-HA总分值均高于轻度认知功能障碍组,且差异有统计学意义(P0.05)。Pearson相关性分析结果显示:SADL总均分、IOI-HA总分值与MoCA总分均成正相关(r=0.670,0.785,P=0.000)。结论相比于认知功能正常的老年性聋患者,轻度认知功能障碍患者对佩戴助听器的受益度和满意度是降低的,并且两者呈正相关,即老年聋患者的认知功能水平越低,其对佩戴助听器的受益度和满意度越小。%Objective To evaluate the influence of mild cognitive impairment (MCI) on the satisfaction and benefits of hearing aids usage in patients with presbycusis. Methods Data from 92 subjects who had been fitted with hearing aids for more than six months at the audiology test center of Fuzhou General Hospital of PLA were collected. The subjects were di-vided into two groups (MCI and control) depending on their MoCA scores. All subjects received SADL and IOI-HA evalua-tion. Results Scores of SADL, positive effect, service and price and IOI-HA were significantly higher in the group of nor-mal cognitive function than in the group of MCI (p0.05). Positive correlations were observed between SADL and MoCA scores (r=0.670,P=0.000), and between IOI-HA and MoCA (r=0.785,P=0.000) scores. Conclusion Compared with patients of normal cognitive function, the satisfaction and

  19. Some linguistic observations on testing hearing

    DEFF Research Database (Denmark)

    Bonner, Maria

    2012-01-01

    Diagnostic testing of a person’s hearing is central to the selection and fitting of hearing aids. In addition to the pure tone audiogram based on sounds, hearing loss can also be diagnosed by speech perception tests. While the audiogram does not use language and thus tests auditory perception...... exclusively, it is more difficult to restrict language-based testing to hearing alone. Two central issues observable in current language-based testing for hearing loss may render the test results inaccurate, namely the selection of language materials and the differences between standard and regional varieties...

  20. Tactile Aids

    Directory of Open Access Journals (Sweden)

    Mohtaramossadat Homayuni

    1996-04-01

    Full Text Available Tactile aids, which translate sound waves into vibrations that can be felt by the skin, have been used for decades by people with severe/profound hearing loss to enhance speech/language development and improve speechreading.The development of tactile aids dates from the efforts of Goults and his co-workers in the 1920s; Although The power supply was too voluminous and it was difficult to carry specially by children, it was too huge and heavy to be carried outside the laboratories and its application was restricted to the experimental usage. Nowadays great advances have been performed in producing this instrument and its numerous models is available in markets around the world.

  1. Evaluation of the subjective effect of middle ear implantation in hearing-impaired patients with severe external otitis.

    OpenAIRE

    Snik, A.F.M.; van Duijnhoven, N. T. L.; Mulder, J.J.S.; Cremers, C.W.R.J.

    2007-01-01

    The subjective benefit of middle ear implantation was studied in a group of 23 hearing-impaired patients who could not use conventional hearing aids owing to severe chronic external otitis. Changes in hearing disability (Abbreviated Profile of Hearing Aid Benefit [APHAB]) and changes in quality of life (Glasgow Benefit Inventory [GBI]) were determined. Mean benefit value on the APHAB for the subscale Ease of Communication was close to the mean reference value for conventional hearing aids. Fo...

  2. Evaluation of long-term patient satisfaction and experience with the Baha(®) bone conduction implant

    DEFF Research Database (Denmark)

    Rasmussen, Jacob; Olsen, Steen Østergaard; Nielsen, Lars Holme

    2012-01-01

    Objective: Evaluate long-term patient satisfaction with bone-anchored hearing aids (the Baha(R), now referred to by Cochlear as a 'bone conduction implant') in our hospital clinic spanning the eighteen-year period from the inception of our Baha program. The researchers further wished to analyse t...

  3. Avaliação dos benefícios proporcionados pelo AASI em crianças e jovens da faixa etária de 7 a 14 anos Assessment of benefit of hearing AIDS in children and young people from ages 7 to 14

    Directory of Open Access Journals (Sweden)

    Cibele Cristina Boscolo

    2006-08-01

    Full Text Available A presença de perda auditiva pode acarretar sérias conseqüências no desenvolvimento de fala e aprendizagem. Um recurso importante para a reabilitação do deficiente auditivo é o AASI. Para estar bem adaptado, o AASI deve fornecer benefícios para os usuários. A avaliação do benefício proporcionado pelo AASI, por meio de questionários de auto-avaliação, é fundamental. O presente estudo procurou verificar os benefícios proporcionados pelo AASI por meio de um questionário aplicado às crianças e adolescentes usuários de AASI, na faixa etária de 7 a 14 anos. Foram avaliados 19 deficientes auditivos, de ambos os sexos. Verificamos que em relação ao uso do AASI, 12 (63% deficientes auditivos utilizam o AASI em todos os lugares que vão, retirando-os apenas para tomar banho e dormir, 5 (23% referem utilizar o AASI somente em casa e na terapia fonoaudiológica Em relação ao benefício proporcionado pelo AASI na rotina caseira, 14 (73% ouvem melhor a televisão, 15 (78% ouvem melhor o telefone ou campainha, 12 (63% ouvem melhor os pais chamarem pelo nome. No ambiente escolar, verificou-se que o AASI promove uma melhor recepção da fala do professor estando ele próximo ao aluno. Em situações sociais, 15 sujeitos (78% relataram que com o AASI brincam melhor com seus amigos, 12 (63% ouvem melhor os amigos , 16 (84% conseguem ouvir os carros na rua, e 9 (47% referiram que conseguem ouvir uma pessoa falando em local de ruído. O uso desse instrumento possibilitou verificar os benefícios oferecidos pelo AASI às crianças e jovens deficientes auditivos.The presence of hearing loss can have serious consequences on speech development and learning. Personal sound amplification devices (hearing aids are an important resource for hearing rehabilitation of the deaf are. To be well adapted, aids should supply benefits for users. It is essential to assess the benefits provided by the devices, by means of self-evaluation questionnaires. The

  4. Hearing speech in music

    Directory of Open Access Journals (Sweden)

    Seth-Reino Ekström

    2011-01-01

    Full Text Available The masking effect of a piano composition, played at different speeds and in different octaves, on speech-perception thresholds was investigated in 15 normal-hearing and 14 moderately-hearing-impaired subjects. Running speech (just follow conversation, JFC testing and use of hearing aids increased the everyday validity of the findings. A comparison was made with standard audiometric noises [International Collegium of Rehabilitative Audiology (ICRA noise and speech spectrum-filtered noise (SPN]. All masking sounds, music or noise, were presented at the same equivalent sound level (50 dBA. The results showed a significant effect of piano performance speed and octave (P<.01. Low octave and fast tempo had the largest effect; and high octave and slow tempo, the smallest. Music had a lower masking effect than did ICRA noise with two or six speakers at normal vocal effort (P<.01 and SPN (P<.05. Subjects with hearing loss had higher masked thresholds than the normal-hearing subjects (P<.01, but there were smaller differences between masking conditions (P<.01. It is pointed out that music offers an interesting opportunity for studying masking under realistic conditions, where spectral and temporal features can be varied independently. The results have implications for composing music with vocal parts, designing acoustic environments and creating a balance between speech perception and privacy in social settings.

  5. Quality Judgments of Hearing and Transduced Speech

    Science.gov (United States)

    Witter, H. L.; Goldstein, D. P.

    1971-01-01

    Investigation of the effects of frequency range, harmonic distortion, intermodulation distortion, and transient response of hearing aids upon judgments of quality showed transient response measurements the best predictor of listener judgments, with voice a possible factor. (Author/KW)

  6. 22 CFR 216.8 - Public hearings.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Public hearings. 216.8 Section 216.8 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ENVIRONMENTAL PROCEDURES § 216.8 Public hearings. (a) In most instances AID will be able to gain the benefit of public participation in the impact statement...

  7. [Rehabilitative measures in hearing-impaired children].

    Science.gov (United States)

    von Wedel, H; von Wedel, U C; Zorowka, P

    1991-12-01

    On the basis of certain fundamental data on the maturation processes of the central auditory pathways in early childhood the importance of early intervention with hearing aids is discussed and emphasized. Pathological hearing, that is acoustical deprivation in early childhood will influence the maturation process. Very often speech development is delayed if diagnosis and therapy or rehabilitation are not early enough. Anamnesis, early diagnosis and clinical differential diagnosis are required before a hearing aid can be fitted. Selection criteria and adjustment parameters are discussed, showing that the hearing aid fitting procedure must be embedded in a complex matrix of requirements related to the development of speech as well as to the cognitive, emotional and social development of the child. As a rule, finding and preparing the "best" hearing aids (binaural fitting is obligatory) for a child is a long and often difficult process, which can only be performed by specialists who are pedo-audiologists. After the binaural fitting of hearing aids an intensive hearing and speech education in close cooperation between parents, pedo-audiologist and teacher must support the whole development of the child. PMID:1770955

  8. [Rehabilitative measures in hearing-impaired children].

    Science.gov (United States)

    von Wedel, H; von Wedel, U C; Zorowka, P

    1991-12-01

    On the basis of certain fundamental data on the maturation processes of the central auditory pathways in early childhood the importance of early intervention with hearing aids is discussed and emphasized. Pathological hearing, that is acoustical deprivation in early childhood will influence the maturation process. Very often speech development is delayed if diagnosis and therapy or rehabilitation are not early enough. Anamnesis, early diagnosis and clinical differential diagnosis are required before a hearing aid can be fitted. Selection criteria and adjustment parameters are discussed, showing that the hearing aid fitting procedure must be embedded in a complex matrix of requirements related to the development of speech as well as to the cognitive, emotional and social development of the child. As a rule, finding and preparing the "best" hearing aids (binaural fitting is obligatory) for a child is a long and often difficult process, which can only be performed by specialists who are pedo-audiologists. After the binaural fitting of hearing aids an intensive hearing and speech education in close cooperation between parents, pedo-audiologist and teacher must support the whole development of the child.

  9. Attitude and help-seeking for hearing impairment

    NARCIS (Netherlands)

    vandenBrink, RHS; Wit, HP; Kempen, GIJM; vanHeuvelen, MJG

    1996-01-01

    The aim of the present study was to investigate help-seeking for hearing impairment in the elderly, and to compare groups showing dissimilar help-seeking on their attitude toward hearing loss and hearing aids. Attitude factors were based on a revised version of the Health Belief Model, and included

  10. Adult hearing screening: the Cyprus Pilot Program

    Directory of Open Access Journals (Sweden)

    C. Thodi

    2011-03-01

    Full Text Available Hearing loss is the third most common condition affecting adults over 65 (Cruickshanks et al., 1998. It can affect quality of life, limiting the ability to communicate efficiently, and leading to isolation, psychological strain, and functional decline (LaForge, Spector, Sternberg, 1992; Yueh, Shapiro, MacLean, Shekelle, 2003. Communication limitations impinge on the person directly, as well as the family, friends, and social circle. Reports on hearing loss among adults indicate that less than 25% of people who can benefit from amplification are actually using hearing aids, and that people diagnosed with a hearing loss delay seeking amplification by about seven years (Kochkin, 1997. Often, family members are the driving force behind a person with a hearing loss who decides to seek help. Adult hearing screening programs might have a positive effect on raising public awareness on hearing loss and its implications, and shortening delay time for intervention. There is no routine hearing screening for the adult population in Cyprus. The health system provides hearing tests for beneficiaries upon physician recommendation or self-referral. The Cyprus pilot adult hearing screening program (ΑΠΑΣ- EVERYONE- Greek acronym for Screening- Intervention-Hearing-Participation to Life screened hearing in retired adults.

  11. A Comparison of Aided Hearing Thresholds by Behavioral Audiometry and Auditory Steady-state Response in Sound Field%声场中记录的听性稳态助听反应阈与行为测试助听听阈的相关性

    Institute of Scientific and Technical Information of China (English)

    邹建华; 蓝小兵; 林琳; 李光智

    2011-01-01

    ObjectiveTo evaluate the aided hearing thresholds by using multiple-frequency auditory steady-state response (ASSR) to Chirp stimuli in sound field, to observe its correlation with behavioral aided hearing thresholds and to explore the clinical significance of ASSR to Chirp stimuli in evaluation of hearing aid outcome. Methods Twenty-two severely hearing-impaired children (39 ears)with hearing aids received the examination with Eclipse EP25 ASSR device and GSS-61 audiometer to obtain their aided hearing thresholds. Sixteen normal-hearing children (32 ears) received the examination to obtain their behavioral thresholds and ASSR thresholds. Results For the hearing-impaired group, the coefficients of ASSR and behavioral aided hearing thresholds were 0.65,0.68,0.77 and 0.82 at 0.5,1,2 and 4 kHz, respectively(P<0.01), which indicated there were correlations between the two test results. The paired t-test showed that there were significant differences between behavioral thresholds and ASSR thresholds of normal group at 0.5, 1, 2 and 4 kHz(P<0.01). The ASSR thresholds were 20-30 dB HL higher than behavioral thresholds, Conclusion The ASSR to Chirp stimuli can be used to evaluate the hearing aid outcomes in clinical practice.%目的 应用多频听觉稳态反应(ASSR)Chirp刺激信号在声场中测试助听反应阈,观察其阈值与行为测试助听听阈的相关性,探讨多频听觉稳态反应Chirp刺激信号声场测试评估助听器补偿效果的临床意义.方法 选取22例(39耳)重度感音神经性听力损失、已配戴助听器的患儿(听障组)和16例(32耳)听力正常儿童(对照组)为研究对象.应用国际听力Eclipse EP25型多频稳态诱发电位仪及美国GSI-61型听力计,分别对听障组在声场中使用两种仪器测试助听听阈;对对照组进行裸耳行为听阈与声场中听觉稳态反应阈测试.结果 在0.5、1、2、4 kHz处,听障组ASSR助听反应阈与行为助听听阈的相关系数分别为0.65、0.68

  12. The Sentence Recognition Ability of Cochlear Implant Children with Hearing Aids in the Contralateral%对侧使用助听器对人工耳蜗植入儿童句子识别能力的影响

    Institute of Scientific and Technical Information of China (English)

    杨影; 孙喜斌; 王康; 崔芳芳; 杨会会; 王丽燕

    2015-01-01

    Objective To explore sentence recognition rate differences in hearing-impaired children who are in electroacoustic stimulation(cochlear implant in one ear and a hearing aid in the opposite, CI&HA) mode and electrostimulation(cochlear implant in one ear, CI) mode in quiet and noisy environment.Methods In quiet and noisy environment, sentence recognition rate was compared in CI&HA mode and CI mode in 12 cases of children with cochlear implants.Results Electrostimulation mode is significantly impacted by the contralateral hearing aid.The sentence recognition rate of CI&HA mode and CI mode is 77.7%±15.0% and 73.0%±17.2% respectively in quiet, 60.8%±24.5% and 54.8%±19.7% respectively in noisy.Conclusion The performances of hearing-impaired children using CI&HA mode are much better than those using CI mode in quiet and noisy environment.%目的:探讨安静环境和噪声环境下,人工耳蜗植入儿童在电声双模式(对侧使用助听器)和电模式(对侧不使用助听器)助听下的句子识别率差异。方法在安静环境和噪声环境中,分别对12例人工耳蜗植入儿童进行句子识别率测试,比较两种助听模式之间的识别率差异。结果在安静环境中,电声双模式助听的人工耳蜗植入儿童句子识别率为77.7%±15.0%,电模式助听下的句子识别率为73.0%±17.2%,两者之间差异显著(P<0.05);在噪声环境中,电声双模式助听下的句子识别率为60.8%±24.5%,电模式助听下的句子识别率为54.8%±19.7%,两者之间差异显著(P<0.05)。结论在安静环境和噪声环境中,电声双模式助听的句子识别率均高于电模式助听的句子识别率。

  13. Hearing Assistive Technology

    Science.gov (United States)

    ... for the Public / Hearing and Balance Hearing Assistive Technology Hearing Assistive Technology: FM Systems | Infrared Systems | Induction ... Assistive Technology Systems Solutions What are hearing assistive technology systems (HATS)? Hearing assistive technology systems (HATS) are ...

  14. 人工耳蜗植入者对侧耳佩戴助听器的效果评价%Effectiveness evaluation of contralateral hearing aid for cochlear implant users

    Institute of Scientific and Technical Information of China (English)

    钱宇虹; 郭梦和

    2004-01-01

    背景:双耳聆听能够更好地进行声源定位,感受立体声,提高听阈5~10dB及增强噪声环境中的言语辨别能力.目的:探讨人工耳蜗植入者对侧耳佩戴助听器的意义和作用.设计:自身和相互对照研究.地点和对象:实验在第一军医大学珠江医院耳鼻咽喉科全军听力中心完成,对象为本科收治的语前聋患者6例,男4例,女2例,年龄7~18岁.方法:均为单耳使用Nucleus24人工耳蜗系统,采用ACE编码策略.于术后开机半年时在不同助听方式下(人工耳蜗+助听器和单独使用人工耳蜗)分别进行声场(啭音)测听、言语功能评估和问卷调查,将结果进行统计分析.主要观察指标:①两种助听方式下测试125,250,500,1 000,2 000,4 000和8 000 Hz的啭音听阈.②言语功能评估.③问卷调查.结果:人工耳蜗+助听器各频率听阈均值(18.89 Hz)较单独使用人工耳蜗声场(啭音)测试的各频率听阈均值(24.17 Hz)为低(t=4.647,P<0.01),频率特性好.50个常用词汇及音节复述得分,人工耳蜗+助听器平均86分,单用人工耳蜗平均84分,说明患者利用两种助听方式均能获得较好的聆听效果.问卷调查显示使用人工耳蜗+助听器比单独使用人工耳蜗在辨别方向,噪声环境中聆听具有更好的效果,但在安静环境下聆听,两者无明显差异.结论:使用人工耳蜗者对侧耳佩戴助听器有助于更好地聆听.%BACKGROUND: Binaural hearing can localize sound, perceive stereo,and help to improve auditory threshold by 5 - 10 dB and the ability to distinguish sounds in noisy environment.OBJECTIVE: To investigate the effects of contralateral hearing aid for cochlear implant users.DESIGN: Auto-control and mutual control study.SETTING and PARTICIPANTS: The experiment was conducted at the PLA Hlearing Center of Department of Otorhinolarynagology, Zhujiang Hospital, First Military Medical University. The subjects were 6 prelingually deafened patients (4 males

  15. An Algorithm for Adaptive and Digital Hearing Aid Acoustic Feedback Cancellation%一种自适应数字助听器声反馈消除算法

    Institute of Scientific and Technical Information of China (English)

    唐燕; 张玲华

    2013-01-01

      鉴于声反馈冲击响应具有稀疏性,文中提出把IPNLMS算法应用于数字助听器声反馈消除,可以获得比NLMS算法更快的收敛速度。与固定步长NLMS算法一样,其收敛速度和稳态失调是一对矛盾的需求。文中提出一种新的变步长IPNLMS算法,该算法依据滤波器梯度调节IPNLMS算法的全局步长,步长随滤波器系数梯度的减小而减小,有效解决了收敛性能和稳态误差的矛盾。相比其他变步长算法,受噪声影响小,收敛过程稳定,适用于数字助听器声反馈消除。仿真实验说明本算法应用于数字助听器的声反馈消除性能比传统NLMS算法优异许多。%Due to feedback impulse response is sparse,put forward the IPNLMS algorithm used in the digital hearing aid acoustic feedback cancellation,which could get faster convergence speed than NLMS. The requirements of fast convergence and low steady-state misalign-ment are conflict as same as the NLMS. Propose a novel variable step-size algorithm which regulates step size in accordance with filter weight gradient,and a decrease in the gradient of the filter weights causes the step size decrease. The algorithm solves the contradiction between fast convergence and low steady-state misalignment. Compared with other algorithms,it is insensitive to noise and suitable for digital hearing aids acoustic feedback cancellation. The experiments show that the proposed algorithm achieves more excellent perform-ance than traditional NLMS for acoustic feedback cancellation.

  16. Limitação de atividades em idosos: estudo em novos usuários de próteses auditivas por meio do questionário APHAB Activity limitations in the elderly: a study of new hearing aid users using the APHAB questionnaire

    Directory of Open Access Journals (Sweden)

    Nayyara Glícia Calheiros Flores

    2012-03-01

    Full Text Available OBJETIVO: Avaliar limitações auditivas de idosos com perda auditiva sensorioneural de grau moderado a severo segundo variáveis escolaridade e grau da perda auditiva, por meio do questionário de auto-avaliação Abbreviate Profile of Hearing Aid Benefit (APHAB. MÉTODOS: Foi aplicado o questionário em 30 idosos antes e após três meses de uso da amplificação. A amostra foi composta por 60% mulheres e 40% homens, com média de idade de 71,6 anos. O grau de escolaridade foi distribuído em três categorias: não-alfabetizado, ensino fundamental e ensino médio. Os dados foram analisados estatisticamente. Os escores foram comparados por sub-escala, e a avaliação geral pela subtração desses escores. Além disso, foi calculada a associação entre benefício e grau de escolaridade e grau de perda auditiva. RESULTADOS: O estudo comparativo entre os escores obtidos na aplicação do questionário sem e com prótese auditiva revelou diferença nas sub-escalas Facilidade de Comunicação, Reverberação e Ruído Ambiental, com valores de pPURPOSE: To evaluate hearing limitations among elderly individuals with moderate to severe sensorineural hearing loss according to the variables educational level and degree of hearing loss, using the Abbreviated Profile of Hearing Aid Benefit self-assessment questionnaire. METHODS: The questionnaire was applied to 30 elderly subjects before and after three months of use of amplification. The sample was composed of 60% females and 40% males, with mean age of 71.6 years. Educational level was divided into three categories: illiterate, elementary school, and high school education. Data were analyzed statistically. Scores were compared by subscale and an overall assessment was conducted by subtracting these scores. Moreover, it was calculated the association between benefit and educational level and degree of hearing loss. RESULTS: The comparative study between scores obtained in the questionnaire with and

  17. Feedback suppression in digital hearing instruments

    DEFF Research Database (Denmark)

    Ma, Guilin

    canceller with filtered-X adaptation by injecting nearly inaudible noise. The second approach uses a linear predicative coding based vocoder to synthesize the hearing-aid output in order to decorrelate the hearing-aid output signal and the desired input signal. In the end, a discussion about the use......In this dissertation, the feedback whistling problem with digital hearing instruments is investigated. The work focuses on the properties of the feedback path, the modelling of the feedback path and the feedback suppression techniques. The properties and modelling of the feedback path are first...... of the proposed feedback path models in the feedback cancellation systems is presented....

  18. Masking Release in Children and Adults with Hearing Loss When Using Amplification

    Science.gov (United States)

    Brennan, Marc; McCreery, Ryan; Kopun, Judy; Lewis, Dawna; Alexander, Joshua; Stelmachowicz, Patricia

    2016-01-01

    Purpose: This study compared masking release for adults and children with normal hearing and hearing loss. For the participants with hearing loss, masking release using simulated hearing aid amplification with 2 different compression speeds (slow, fast) was compared. Method: Sentence recognition in unmodulated noise was compared with recognition…

  19. Verbal and Spatial Analogical Reasoning in Deaf and Hearing Children: The Role of Grammar and Vocabulary

    Science.gov (United States)

    Edwards, Lindsey; Figueras, Berta; Mellanby, Jane; Langdon, Dawn

    2011-01-01

    The extent to which cognitive development and abilities are dependent on language remains controversial. In this study, the analogical reasoning skills of deaf and hard of hearing children are explored. Two groups of children (deaf and hard of hearing children with either cochlear implants or hearing aids and hearing children) completed tests of…

  20. Online Personalization of Hearing Instruments

    Directory of Open Access Journals (Sweden)

    Bert de Vries

    2008-09-01

    Full Text Available Online personalization of hearing instruments refers to learning preferred tuning parameter values from user feedback through a control wheel (or remote control, during normal operation of the hearing aid. We perform hearing aid parameter steering by applying a linear map from acoustic features to tuning parameters. We formulate personalization of the steering parameters as the maximization of an expected utility function. A sparse Bayesian approach is then investigated for its suitability to find efficient feature representations. The feasibility of our approach is demonstrated in an application to online personalization of a noise reduction algorithm. A patient trial indicates that the acoustic features chosen for learning noise control are meaningful, that environmental steering of noise reduction makes sense, and that our personalization algorithm learns proper values for tuning parameters.