Use of a Loudness Model for Hearing-Aid Fitting. I. Linear Hearing Aids

1998 ◽  
Vol 32 (5) ◽  
pp. 317-335 ◽  
Author(s):  
Brian C. J. Moore ◽  
Brian R. Glasberg
Keyword(s):  
Hearing Aids ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
Loudness Model

Use of a loudness model for hearing aid fitting: II. Hearing aids with multi-channel compression

1999 ◽  
Vol 33 (3) ◽  
pp. 157-170 ◽  
Author(s):  
B. C. J. Moore ◽  
J. I. Alcantara ◽  
M. A. Stone ◽  
B. R. Glasberg
Keyword(s):  
Hearing Aids ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
Loudness Model

Comparison of In-the-Ear and Over-the-Ear Hearing Aid Fittings

1986 ◽  
Vol 51 (4) ◽  
pp. 362-369 ◽  
Author(s):  
Donna M. Risberg ◽  
Robyn M. Cox
Keyword(s):  
Hearing Aids ◽  
High Frequency ◽  
Comparative Evaluation ◽  
Speech Intelligibility ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
The Difference ◽  
Functional Gain ◽  
The Relationship

A custom in-the-ear (ITE) hearing aid fitting was compared to two over-the-ear (OTE) hearing aid fittings for each of 9 subjects with mild to moderately severe hearing losses. Speech intelligibility via the three instruments was compared using the Speech Intelligibility Rating (SIR) test. The relationship between functional gain and coupler gain was compared for the ITE and the higher rated OTE instruments. The difference in input received at the microphone locations of the two types of hearing aids was measured for 10 different subjects and compared to the functional gain data. It was concluded that (a) for persons with mild to moderately severe hearing losses, appropriately adjusted custom ITE fittings typically yield speech intelligibility that is equal to the better OTE fitting identified in a comparative evaluation; and (b) gain prescriptions for ITE hearing aids should be adjusted to account for the high-frequency emphasis associated with in-the-concha microphone placement.

scholarly journals Auditory Profile-based Hearing-aid Fitting: A Proof-Of-Concept Study

2020 ◽  
Author(s):  
Raul Sanchez-Lopez ◽  
Michal Fereczkowski ◽  
Sébastien Santurette ◽  
Torsten Dau ◽  
Tobias Neher
Keyword(s):  
Hearing Aids ◽  
Hearing Aid ◽  
Data Driven ◽  
Proof Of Concept ◽  
Hearing Aid Fitting ◽  
Concept Study ◽  
Pure Tone Audiogram ◽  
Comprehensive Test ◽  
Study Support

AbstractObjectiveThe clinical characterization of hearing deficits for hearing-aid fitting purposes is typically based on the pure-tone audiogram only. In a previous study, a group of hearing-impaired listeners were tested using a comprehensive test battery designed to tap into different aspects of hearing. A data-driven analysis of the data yielded four clinically relevant patient subpopulations or “auditory profiles”. In the current study, profile-based hearing-aid settings were proposed and evaluated to explore their potential for providing more targeted hearing-aid treatment.DesignFour candidate hearing-aid settings were implemented and evaluated by a subset of the participants tested previously. The evaluation consisted of multi-comparison preference ratings carried out in realistic sound scenarios.ResultsListeners belonging to the different auditory profiles showed different patterns of preference for the tested hearing-aid settings that were largely consistent with the expectations.ConclusionThe results of this proof-of-concept study support further investigations into stratified, profile-based hearing-aid fitting with wearable hearing aids.

scholarly journals A Study on the Preferred Real-Ear Insertion Gain of Multi-Channel Hearing Aid for the Korean with Sensorineural Hearing Loss

2020 ◽  
Vol 16 (2) ◽  
pp. 85-94
Author(s):  
Eojini Bang ◽  
Kyoungwon Lee
Keyword(s):  
Word Recognition ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
High Frequencies ◽  
Frequency Bands ◽  
Before And After ◽  
Fitting Procedures ◽  
Linear Version ◽  
Gain Adjustment

Purpose: This study aimed to compare the preferred real-ear insertion gain for Korean (PREIG-K) wearing multi-channel hearing aid with the National Acoustics Laboratories-Non-Linear version 2 (NAL-NL2; National Acoustic Laboratories) gains in order to develop Korean hearing aid fitting formula.Methods: A total of thirty one (62 ears) Korean hearing aid users were included in this study. All subjects wore in-the-canal or custom hearing aids in both ears. Individual hearing aid fitting procedures involved to adjust the gains for 50, 65, and 80 dB sound pressure level of speech across low, high, and wideband frequency bands based on participant’s subjective responses. In addition, only the high frequency bands of 1 kHz or more of the PREIG-K were re-adjusted to be the same as NAL-NL2 gain and then the word recognition scores (WRSs) were compared before and after the adjusting gain. Results: The results showed that the PREIG-K increased up to 1.5 kHz with the maximum amount, then the PREIG-K decreased across the frequencies. For all half octave frequencies, the PREIG-Ks were substantially less than the NAL-NL2. When the PREIG-K of high frequencies were re-adjusted same as the NAL-NL2 gains, the WRSs of the PREIG-K were not significantly different before and after gain adjustment. The slopes up to 1.5 kHz frequencies of the PREIG-K were steeper than the slopes of NAL-NL2 gain, however similar to the slope of manufactures’ fitting formulae.Conclusion: The development of an effective hearing aid fitting formula for improving the communication abilities of hearing-impaired Korean will require further experiments considering the language, physical characteristics, and word recognition used by Koreans.

scholarly journals Perception of One’s Own Voice After Hearing-Aid Fitting for Naive Hearing-Aid Users and Hearing-Aid Refitting for Experienced Hearing-Aid Users

2020 ◽  
Vol 24 ◽  
pp. 233121652093246
Author(s):  
Johanna Hengen ◽  
Inger L. Hammarström ◽  
Stefan Stenfelt
Keyword(s):  
Hearing Impairment ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Control Group ◽  
Voice Perception ◽  
Hearing Aid Fitting ◽  
Before And After ◽  
Vocal Intensity ◽  
First Time

Dissatisfaction with the sound of one’s own voice is common among hearing-aid users. Little is known regarding how hearing impairment and hearing aids separately affect own-voice perception. This study examined own-voice perception and associated issues before and after a hearing-aid fitting for new hearing-aid users and refitting for experienced users to investigate whether it was possible to differentiate between the effect of (unaided) hearing impairment and hearing aids. Further aims were to investigate whether First-Time and Experienced users as well as users with dome and mold inserts differed in the severity of own-voice problems. The study had a cohort design with three groups: First-Time hearing-aid users going from unaided to aided hearing ( n = 70), Experienced hearing-aid users replacing their old hearing aids ( n = 70), and an unaided control group ( n = 70). The control group was surveyed once and the hearing-aid users twice; once before hearing-aid fitting/refitting and once after. The results demonstrated that own-voice problems are common among both First-Time and Experienced hearing-aid users with either dome- or mold-type fittings, while people with near-normal hearing and not using hearing aids report few problems. Hearing aids increased ratings of own-voice problems among First-Time users, particularly those with mold inserts. The results suggest that altered auditory feedback through unaided hearing impairment or through hearing aids is likely both to change own-voice perception and complicate regulation of vocal intensity, but hearing aids are the primary reason for poor perceived sound quality of one’s own voice.

Large Vestibular Aqueduct Syndrome: A Case Study

2005 ◽  
Vol 16 (10) ◽  
pp. 822-828 ◽  
Author(s):  
Jackie L. Clark ◽  
Ross J. Roeser
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Behavioral Testing ◽  
Hearing Aid Fitting ◽  
Hearing Sensitivity ◽  
Vestibular Aqueduct ◽  
Brainstem Response ◽  
Large Vestibular Aqueduct Syndrome ◽  
Large Vestibular Aqueduct

A 23-month-old female was referred for hearing aid fitting after failing newborn hearing screening and being diagnosed with significant hearing loss through subsequent diagnostic testing. Auditory brainstem response (ABR) and behavioral testing revealed a moderate-to-severe bilateral mixed hearing loss. Prior to the hearing aid evaluation, tympanostomy tubes had been placed bilaterally with little or no apparent change in hearing sensitivity. Initial testing during the hearing aid fitting confirmed earlier findings, but abnormal middle ear results were observed, requiring referral for additional otologic management. Following medical clearance, binaural digital programmable hearing aids were fit using Desired Sensation Level parameters. Behavioral testing and probe microphone measures showed significant improvements in audibility. Decrease in hearing sensitivity was observed six months following hearing aid fitting. Radiological studies, ordered due to the mixed component and decreased hearing sensitivity, revealed large vestibular aqueduct syndrome (LVAS). Based on the diagnosis of LVAS, a cochlear implant was placed on the right ear; almost immediate speech-language gains were observed.

Fitting Hearing Aids Using Clinical Measures of Loudness Discomfort Levels: An Evidence-Based Review of Effectiveness

2005 ◽  
Vol 16 (07) ◽  
pp. 461-472 ◽  
Author(s):  
Gustav H. Mueller ◽  
Ruth A. Bentler
Keyword(s):  
Hearing Aids ◽  
Statistical Power ◽  
Hearing Aid ◽  
Evidence Based ◽  
Level Of Evidence ◽  
Strong Recommendation ◽  
Hearing Aid Fitting ◽  
Fitting Procedure ◽  
Clinical Measurements ◽  
Clinical Measures

Clinical measurement of the loudness discomfort level (LDL) historically has been part of the hearing aid fitting procedure, and this clinical practice remains popular today. LDL measurements also are recommended in contemporary hearing aid fitting protocols. Yet, surveys show that many hearing aid users are dissatisfied with the loudness of their hearing aids. In this evidence-based review article, we evaluate the effectiveness of clinical LDL measurements. Specifically, we asked the question "Are the clinical measurements of LDL for adult patients predictive of aided acceptance and satisfaction of loudness for high inputs in the real world?" Nearly 200 articles were reviewed; three met the criteria set forth in this review. The evidence supported using unaided LDLs for selecting the maximum real-ear output of hearing aids. No study using aided LDLs or aided loudness verification met the criteria. The level of the evidence for the three articles using unaided LDLs was low; no higher than Level 4. The limited number of studies, the level of evidence, and the statistical power of the studies prevents us from making a strong recommendation concerning the clinical use of LDL measures. Additional research in this area, especially research employing randomized controlled trials would be a useful addition to this body of literature.

scholarly journals A Study on the Korean Conversation Speech Level and Spectrum in Sound-Treated Environment

2020 ◽  
Vol 16 (2) ◽  
pp. 133-139 ◽  
Author(s):  
Young Kwon Han ◽  
Kyoungwon Lee
Keyword(s):  
Hearing Aids ◽  
Hearing Aid ◽  
Conversational Speech ◽  
Hearing Aid Fitting ◽  
Importance Function ◽  
Speech Spectrum ◽  
Males And Females ◽  
Korean Type

Purpose: Several studies have reported the differences between Korean and other countries’ speech in long-term average speech spectrum (LTASS) and band importance function. Authors tried to identify the conversational speech level, the resulting spectrum, and the LTASS for Korean. The purpose of this study was to support the production of a Korean-type hearing aid fitting formula to effectively improve the sound quality of hearing aids and the communication abilities with hearing aids, and to standardize the sound stimuli required to measure the performance of hearing aids. Methods: A total of 73 participants with normal hearing and with no specific voice and language deficits was voluntarily recruited from capital, Gyeongsang and Jeolla areas. The conversational speech level was measured by vocalizing ‘soft,’ ‘moderate,’ ‘raised,’ and ‘loud’ at a distance of 1.0 m from the speaker. And LTASS was measured by vocalizing it at a distance of 0.2 m from the speaker. Results: There was a difference in the mean of males and females in the conversation level, but no significant regional differences were shown. The conversational speech level corresponding to 30th, 65th, and 99th percentiles was 59.67, 64.74, and 79.07 dB sound pressure level, respectively. And the speech spectrum of 30th, 65th, and 99th percentile and LTASS showed in different forms from the international speech test signal. Conclusion: The results of this study should help to calculate the Korean type hearing aid fitting formula and should be used as the basic data to determine the characteristics of the sound stimuli when measuring the performance of the hearing aid.

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