BTE Hearing Aids Research Articles

Open-fitting hearing aids: a comparative analysis between open behind-the-ear and open completely-in-the-canal instant-fit devices.

Our study aims to assess the open-fitting capabilities and vent properties of traditional open-fitting behind-the-ear (open BTE) hearing aids to instant-fit open-fitting completely-in-the-canal (open CIC) systems. The study analysed data from 40 patients grouped in two groups based on the used hearing aids. Free field pure tone and speech audiometry were performed to obtain the free-field pure tone average and free-field word recognition score (WRS). The matrix sentence test was employed to evaluate the auditory performance and functional outcomes of patients. The Satisfaction with Amplification in Daily Life (SADL) and the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire were used to assess the personal satisfaction and benefit provided by the hearing aid. Real ear measurements were conducted to objectively evaluate the Real-Ear Unaided Gain (REUG) and Real-Ear Occluded Gain (REOG) of the two groups. For this purpose, six frequency bands (band 1 from 125 to 200Hz, band 2 from 250 to 400Hz, band 3 from 500 to 800Hz, band 4 from 1000 to 1600Hz, band 5 from 2000 to 3150Hz, and band 6 from 4000 to 6300Hz) were defined and compared. Free-field WRS exhibited a significant difference (p-value = 0.004) between open BTE and open CIC, with better results for the open BTE. Matrix test speech reception threshold scores did not differ significantly between groups. No statistical significant difference were observed between APHAB and SADL total scores. Correlation tests revealed a negative correlation between SRT and APHAB scores in the open BTE group, not seen in the open CIC. No statistically significant difference was observed for all bands of REUG values, demonstrating comparability in terms of acoustic resonance of the external auditory canal. Comparing the REOG recorded in the two groups a significant difference was observed for bands 2 through 6. While the average REOG values for bands 5 and 6 were higher in patients with traditional open BTE aids, in contrast, for bands 2, 3, and 4, the REOG values for the open CIC group were higher and statistically significant compared to patients wearing traditional open-fitting BTE hearing aids. Patients with open CIC seem to perform worse in quiet environments compared to noisy ones, as indicated by the free field WRS score. However, the absence of differences in functional performance assessed with the matrix sentence test, and in the psychosocial aspects, makes these devices a good solution for individuals who reject hearing aids due to aesthetic concerns. The differences in terms of real ear measurements, while statistically significant, do not negatively impact overall performance.

Hearing Aid User Perspectives: Reasons and Recommendations for Prescription and Over-The-Counter Device Uptake

Hearing Aid User Perspectives: Reasons and Recommendations for Prescription and Over-The-Counter Device Uptake

Effects of Adaptive Non-linear Frequency Compression in Hearing Aids on Mandarin Speech and Sound-Quality Perception

ObjectiveThis study was aimed at examining the effects of an adaptive non-linear frequency compression algorithm implemented in hearing aids (i.e., SoundRecover2, or SR2) at different parameter settings and auditory acclimatization on speech and sound-quality perception in native Mandarin-speaking adult listeners with sensorineural hearing loss.DesignData consisted of participants’ unaided and aided hearing thresholds, Mandarin consonant and vowel recognition in quiet, and sentence recognition in noise, as well as sound-quality ratings through five sessions in a 12-week period with three SR2 settings (i.e., SR2 off, SR2 default, and SR2 strong).Study SampleTwenty-nine native Mandarin-speaking adults aged 37–76 years old with symmetric sloping moderate-to-profound sensorineural hearing loss were recruited. They were all fitted bilaterally with Phonak Naida V90-SP BTE hearing aids with hard ear-molds.ResultsThe participants demonstrated a significant improvement of aided hearing in detecting high frequency sounds at 8 kHz. For consonant recognition and overall sound-quality rating, the participants performed significantly better with the SR2 default setting than the other two settings. No significant differences were found in vowel and sentence recognition among the three SR2 settings. Test session was a significant factor that contributed to the participants’ performance in all speech and sound-quality perception tests. Specifically, the participants benefited from a longer duration of hearing aid use.ConclusionFindings from this study suggested possible perceptual benefit from the adaptive non-linear frequency compression algorithm for native Mandarin-speaking adults with moderate-to-profound hearing loss. Periods of acclimatization should be taken for better performance in novel technologies in hearing aids.

Efficacy of Auditory Verbal Therapy on Listening and Linguistic Skills of a Child with Bimodal Hearing

Introduction This study aimed to document the effect of Auditory Verbal Therapy (AVT) with proper assessment and management in early intervention of a child with bimodal hearing. Bimodal Hearing is the use of a cochlear implant in one ear and a hearing aid in the opposite ear. Auditory Verbal Therapy is a highly specialist early intervention programme which equips parents with the skills to maximise their deaf child’s speech and language development. Case Report A male child aged 5 years 1 month had bilateral severe to profound hearing loss and speech-language problem. He was using cochlear implant in the right ear and BTE hearing aid in left ear (Bimodal hearing). Speech and language assessment revealed delayed semantic, syntax and pragmatic skills. Assessment of language development test showed poor receptive and expressive language score. The functional auditory performance indicator score indicated poor auditory function. Auditory verbal therapy hierarchy plan was used for treatment. Post 15 sessions after applying AVT the child’s listening and linguistic skills showed a great improvement. Discussion The scales used to measure the efficacy of AVT are found to be useful for the assessment and goal setting for intervention. Thus, appropriate quantification of various aspects of communication skills may describe its potential impact in this case under ADIP scheme.

A Clinical Investigation of the Benefit: BTE Hearing Aids Versus ITE Hearing Aids

A Clinical Investigation of the Benefit: BTE Hearing Aids Versus ITE Hearing Aids

A high-fidelity multi-channel portable platform for development of novel algorithms for assistive listening wearables

The NIDCD has funded a number of projects to develop portable signal processing tools that enable real-time processing of the acoustic environment. The overarching goal is to provide a large group of researchers with the means to efficiently develop and evaluate novel signal processing schemes, individualized fitting procedures, and technical solutions and services for hearing apparatus such as hearing aids and assistive listening devices. We report here on a development done in the SBIR Phase II Project R44DC016247. This project builds on the software being concurrently developed in R01DC015429 to provide a complete portable and wearable software-hardware master hearing aid device needed for development of new solutions for assisted hearing. We will present and demonstrate the portable platform, currently in the Beta launch, that consists of a Cortex A8 based processing unit and a codec set able to support hearing aid architecture of up to 6 microphones and 4 speakers. It is currently accompanied by a binaural 2-microphone BTE hearing aid set, but will also support different headset form-factors of our partners. Additionally it features stereo line in and line out connections. The device can be remotely controlled with a smart phone.

Non-implantable Artificial Hearing Technology.

A hearing aid is a sound-amplifying device used for aiding hearing-impaired individuals and compensating hearing loss. With the development of science and technology, tremendous strides have been made in hearing aid technology. The history of hearing aids can be divided into five eras: acoustic era, carbon era, vacuum tube era, transistor and integrated circuit era, and digital era. It mainly comprises microphone, amplifier, receiver, battery, volume and tone control buttons, and other electroacoustic components, which can be classified into following types: pocket hearing aids, BTE hearing aids, ITE hearing aids, ITE hearing aids, completely/invisible-in-canal hearing aids (CIC and IIC), and other types. Of them, one bone-anchored hearing aid (BAHA) softband is mainly applicable to children under 5years old who cannot wear bone-anchored hearing aids in congenital bilateral external auditory canal occlusion. BAHA system comprises three components: a titanium implant (fixture screw), an external abutment (bridging screw), and a sound processor consisting of a microphone and a transducer. The following procedures are included in hearing aid fitting: medical history collection, trial, fitting, ear sample taking, hearing aid refitting, evaluation, practical instruction, and follow-up care. Children should be helped to select hearing aid as early as possible, and for those with congenital hearing loss or prelingual deafness, it can be added assessment of speech development while preventing the child from swallowing hearing aids or batteries by mistake. Speech recognition score (SRS) test is very important in elderly patients, because the speech hearing and pure-tone hearing of presbycusis are often inconsistent. After the hearing aid is selected, the effect evaluation and related rehabilitation should be carried out timely.

The advanced methods of diagnostics and electroacoustic correction of hearing in children with sensoneural hearing loss

The problem of hearing loss and deafness in children is of great social importance due to the increasing incidence of hearing impairments. According to WHO forecasts, by 2020, the number of people with socially significant hearing defects is expected to increase by more than 30%. The article presents the methods of hearing loss diagnostics in preschool children by means of voice-threshold audiometry, tympanometry, acoustic reflexometry and game audiometry, which makes it possible to detect the minimal auditory disorders. Electroacoustic correction of hearing was conducted by means of advanced digital programmable BTE hearing aids (CA), Oticon (Denmark), with customized inserts.

The effectiveness of commercial desiccants and uncooked rice in removing moisture from hearing aids

Objective: In many low- and middle-income countries, the availability of hearing technology is limited, with few options for hearing aid repairs. Minimising moisture damage to hearing aid electronics improves function and longevity; however, desiccants that absorb moisture from hearing aid components are unavailable in many regions. This study compared the effectiveness of uncooked white rice and seven commercial silica gel desiccants in removing moisture from hearing aids. Design: Relative humidity measurements in a test chamber were obtained from a water-saturated BTE hearing aid prior to and after placement in uncooked white rice and seven different silica gel desiccants. Study sample: Two BTE hearing aids, seven silica gel desiccants and white rice comprised the study sample. Results: All desiccants and the white rice were effective in removing moisture from hearing aids, with Hal Hen Super Dri Aid showing the largest mean reduction in relative humidity. Based on analysis of covariance results, white rice was statistically similar to several of the commercial desiccants. Conclusions: White rice shows promise as an effective alternative to commercial desiccants in reducing moisture in hearing aids when silica gel products are unavailable. As this study was conducted in a relatively dry region, additional research may be needed.

Hearing Aid Patient Education Materials: Is There Room for Improvement?

The purpose of this study was to analyze and compare the readability of patient education materials (PEMs) from leading manufacturers of behind-the-ear style hearing aids and popular hearing aid information Web sites to determine if they meet guidelines recommended by public health agencies. Analysis of hearing aid PEMs. Printed user guides from six of the leading manufacturers of BTE hearing aids and 15 of the most popular hearing aid-information Web sites were accessed online and analyzed for readability using the Gunning-Fog Index, New Fog Count, Raygor Estimate Graph, Simple Measure of Gobbledygook, and Flesch Reading Ease score. Overall average grade-level readability for all six printed manufacturer user manuals was calculated to be written at a 10th grade reading level. Overall average grade-level readabilities for all 15 popular online hearing aid-information Web sites representing professional organizations, suppliers, and health information services were calculated to be written at 10th, 10th, and 11th grade reading levels, respectively. Average Flesch Reading Ease scores for all printed guides and online patient information Web sites were calculated to fall within the fairly difficult category for readability. PEMs provided by top hearing aid manufactures and popular hearing aid Web sites are written well above the reading level recommended by the National Institutes of Health. Consideration should be given toward simplifying these materials in order to enhance user experience and increase compliance among behind-the-ear hearing aid users.

Improvement of Adult BTE Hearing Aid Wearers' Front/Back Localization Performance Using Digital Pinna-Cue Preserving Technologies: An Evidence-Based Review.

This systematic review evaluated the impact of using digital pinna-cue preserving technologies (PPT) on front/back sound localization for adult hearing aid users. Two peer-reviewed studies and two non-peer-reviewed studies were included. Lab-based and self-report outcomes were both assessed. The overall findings suggested that PPT was superior to omni-directional and full directional settings in a relatively quiet, well-controlled laboratory environment but not in the real world. However, observed individual differences in self-report measures suggested that PPT was potentially beneficial to certain hearing aid users. PPT candidacy was discussed and the importance of a pre-fitting interview/consultation was emphasized to assist clinicians in making a solid evidence-based and cost-effectiveness decision when prescribing hearing aids to adults with hearing impairment.

Decision Support System for the Selection of an ITE or a BTE Hearing Aid

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 uses an unconventional method to predict hearing aid type for a patient and it can be used as a second opinion by audiologists for complex cases. After modifying the system to take account of the feedback from a professional audiologist, the success rates obtained were in the ranges 63 to 66 percent. In this research an automatic system was developed to choose between an ITE or a BTE hearing aid type with an explanation facility that can be used as a second opinion by audiologist in cases where the choice of an ITE or a BTE hearing aid is not clear cut. This analysis of audiology data and DSS will provide supplementary information for audiology experts and hearing aid dispensers. This type of system may also be of interest to manufacturers of hearing technologies in using as a ready means for their telephone customer services staff to check data, discovering data in audiology records will also be good for general awareness about the suitability of hearing aid type.

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Sensori-Neural Hearing Loss Client’s Performance with Receiver-In-Canal (RIC) Hearing Aids

Background: Individuals fitted with hearing aids complain of the unnatural sound quality of their voice, other internally generated sounds such as chewing and swallowing sounds “hollow”, “muffled” sounds. Receiver-In-Canal hearing aids are favored due to small size, discrete appearance and ability to minimize occlusion. Aim: To compare the performance of Receiver-In-Canal (RIC) to traditional ear tip (ET), ear moulds (EM) fittings using Functional gain measures. Method: Ten subjects with flat moderately severe sensori neural hearing loss participated in the study. Subjective unaided and aided measures for digital BTE hearing aids with ear tip, ear mould or Receiver-In-Canal for pure tones of 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz were obtained. Results and Discussion: Higher scores were obtained with Receiver-In-Canal fitting on Functional gain measures. No significant difference between all the three conditions was obtained at low frequencies especially at 500 Hz, as Receiver-In-Canal hearing aids attenuate low frequency sounds automatically when the ear is left open (up to 30 dB less amplification at 500 Hz) especially for hearing in noisy situations. Conclusion: The results suggest that Receiver-In-Canal fittings are an effective means of overcoming the major barriers to the acceptance of amplification and further suggest the clinical importance of subjective measures in measuring aided benefit of open-fit devices in the rehabilitation of person’s with moderately severe to severe SN hearing loss.

METHOD OF PREPARING A HEARING AID, AND A HEARING AID

The present invention relates generally to hearing aids and to methods of manufacturing hearing aids. The invention further relates to shells for hearing aids and methods of manufacturing thereof The invention, more particularly, relates to custom-made BTE hearing aids. A shell comprising a first part, and a second part, wherein said first part is adapted to fit the contour of the cleft between a pinna and the skull of an individual is provided. The shell may be part of a hearing aid ( 17 ) that is connected with a tube ( 9 ) in a first end and an earplug ( 20 ) in a second end. In a third aspect of the invention a method of preparing the shell is disclosed and in a fourth aspect a method of manufacturing a hearing aid is also disclosed.

Long-term effects of non-linear frequency compression for children with moderate hearing loss

Objective: To evaluate non-linear frequency compression (NLFC) as a means to improve speech recognition for children with moderate to moderately-severe hearing loss following a six-month acclimatization period. Design: Within subject design with repeated measures across test conditions. Study Sample: Fifteen children, ages 5 to 13 years, with moderate to moderately-severe high-frequency sensorineural hearing loss were fitted with Phonak Nios, micro-sized, BTE hearing aids and evaluated after two six-week intervals with and without NLFC and again after a six-month period of consecutive NLFC use. Results: Using repeated measures analyses, the six-month results were compared to data that was collected following six-week trials with and without NLFC hearing aids (). Improvements seen with NLFC in the initial study () were maintained or significantly increased in the present study. When compared to the six-week data, aided non-sense syllable speech recognition thresholds in quiet and speech recognition in noise were significantly better at the six-month interval. Conclusions: These results suggest that NLFC improves audibility for and recognition of high-frequency speech sounds for children with moderate to moderately-severe hearing loss. In many cases, improvements found with NLFC increased with a longer period of acclimatization to the technology.SumarioObjetivo: Evaluar la compresión no lineal de la frecuencia (NLFC) como un medio para mejorar el reconocimiento del lenguaje en niños con pérdidas auditivas moderadas a moderadamente severas, luego de un periodo de seis meses de aclimatación. Diseño: Es un diseño intra-sujeto con mediciones repetidas en todas las condiciones de la prueba Muestra del Estudio: Quince niños, edades de 5 a 13 años, con hipoacusia sensorineural moderada a moderadamente severa en altas frecuencias, fueron adaptados con auxiliares auditivos retroauriculares, de micro-tamaño, Phonak Nios, y evaluado luego de dos intervalos de seis semanas, con o sin NLFC y de nuevo, luego de un periodo de seis meses de uso consecutivo de NLFC. Resultados: Usando análisis de medidas repetidas, los resultados a seis meses se compararon con datos que fueron recogidos luego de periodos de seis semanas, con y sin auxiliares auditivos NLFC (Wolfe y col, en prensa). Las mejorías que se ven con NLFC en el estudio inicial (Wolfe y col, en prensa) se mantuvieron o fueron significativamente aumentadas en el presente estudio. Cuando se compararon con los datos de seis semanas, los umbrales no amplificados de reconocimiento del lenguaje para sílabas sin sentido en silencio y de reconocimiento del lenguaje en ruido, fueron significativamente mejores en el intervalo de seis meses. Conclusiones: Estos resultados sugieren que la NLFC mejora la audibilidad y el reconocimiento de sonidos lingüísticos de alta frecuencia para niños con hipoacusias moderadas a moderadamente severas. En muchos casos, la mejoría encontrada con NLFC aumentó con un periodo más largo de aclimatación a la tecnología.

Do Androids Dream of Electric Speech? The Construction of Cochlear Implant Identity on American Television and the “New Deaf Cyborg”

Do Androids Dream of Electric Speech? The Construction of Cochlear Implant Identity on American Television and the “New Deaf Cyborg”

A comparison of CIC and BTE hearing aids for three-dimensional localization of speech

Three-dimensional sound localization of speech in anechoic space was examined for eleven listeners with sensorineural hearing loss. The listeners were fitted bilaterally with CIC and BTE hearing aids having similar bandwidth capabilities. The goal was to determine whether differences in microphone placement for these two styles (CICs at the ear canal entrance; BTEs above the pinna) would influence the availability of pinna-related spectral cues and hence localization performance. While lateral and polar angle localization was unaffected by the hearing aid style, the rate of front-back reversals was lower with CICs. This pattern persisted after listeners accommodated to each set of aids for a six week period, although the overall rate of reversals declined. Performance on all measures in all conditions was considerably poorer than in a control group of listeners with normal hearing.SumarioSe evaluó la localización tridimensional de sonidos del habla en un espacio anecoide en once personas con pérdida auditiva sensorineural. A los once se les adaptaron CIC y BTE bilateralmente con capacidad de ancho de banda similar. El objetivo fue determinar si las diferencias en la colocación del micrófono con ambos tipos (CIC en el ingreso del conducto auditivo; BTE sobre el pabellón auricular) podría influenciar la disponibilidad de claves espectrales relacionadas con el pabellón y por ello, el rendimiento para la localización. Mientras que la localización del ángulo lateral y polar no fue afectada por el tipo de auxiliar, la tasa de inversiones frente-atrás fue menor con los CIC. Este patrón persistió después de que estas personas se acostumbraron a cada set de auxiliares por un período de seis semanas, a pesar de que declinó la tasa global de reversiones. El rendimiento en todas las mediciones y condiciones fue considerablemente más pobre que en el grupo control de personas con audición normal.

Behind the ear hearing aid part with exchangeable cover

The invention regards a BTE hearing aid shell shaped to fit behind an outer portion of an ear of a user wherein the shell has first and second opposed side walls where the first side wall faces away from, and the second side wall faces towards the head of the user. According to the invention an ornamental cover plate is detachably attached to at least one of the opposed side walls, and a release tool is provided for release of the cover plate.

Army Moves to Higher Level of Hearing Protection

Army Moves to Higher Level of Hearing Protection