scholarly journals A review of hearing aid fitting procedures

2017 ◽  
Vol 60 (4) ◽  
pp. 201-209 ◽  
Author(s):  
Hajime Sano
Keyword(s):  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
Fitting Procedures

Comparing the Effect of Different Hearing Aid Fitting Methods in Bimodal Cochlear Implant Users

2019 ◽  
Vol 28 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Jantien L. Vroegop ◽  
J. Gertjan Dingemanse ◽  
Marc P. van der Schroeff ◽  
André Goedegebure
Keyword(s):  
Cochlear Implant ◽  
Sound Localization ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
Speech In Noise ◽  
Localization Test ◽  
Fitting Procedures ◽  
Auditory Performance ◽  
Contralateral Ear ◽  
Noise Test

PurposeThe aim of the study was to investigate the effect of 3 hearing aid fitting procedures on provided gain of the hearing aid in bimodal cochlear implant users and their effect on bimodal benefit.MethodThis prospective study measured hearing aid gain and auditory performance in a cross-over design in which 3 hearing aid fitting methods were compared. Hearing aid fitting methods differed in initial gain prescription rule (NAL-NL2 and Audiogram+) and loudness balancing method (broadband vs. narrowband loudness balancing). Auditory functioning was evaluated by a speech-in-quiet test, a speech-in-noise test, and a sound localization test. Fourteen postlingually deafened adult bimodal cochlear implant users participated in the study.ResultsNo differences in provided gain and in bimodal performance were found for the different hearing aid fittings. For all hearing aid fittings, a bimodal benefit was found for speech in noise and sound localization.ConclusionOur results confirm that cochlear implant users with residual hearing in the contralateral ear substantially benefit from bimodal stimulation. However, on average, no differences were found between different types of fitting methods, varying in prescription rule and loudness balancing method.

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 A Literature Review of Bimodal Fitting

2020 ◽  
Vol 16 (4) ◽  
pp. 265-275
Author(s):  
Junghwa Bahng ◽  
Soo Hee Oh
Keyword(s):  
Cochlear Implant ◽  
Frequency Band ◽  
Hearing Aid ◽  
Low Frequency ◽  
Balance Test ◽  
Band Frequency ◽  
Hearing Aid Fitting ◽  
Fitting Procedures ◽  
Band Adjustment ◽  
Bimodal Hearing

Although there are quite a few bimodal cochlear implant users, bimodal fitting guidelines were not fully developed. Bimodal fitting optimization is one of the factors that contribute to successful bimodal outcomes. The purpose of this study is to investigate recent literatures related to bimodal fitting to establish evidence based bimodal fitting guidelines. Three databases including Google Scholar, PubMed publisher, and PLOS One were searched to review bimodal fitting literatures. A total of 599,604 articles were identified by using ten bimodal relevant keywords at the initial stage. Then, we included 192 articles with abstract review, inclusion and exclusion criteria and removals of duplicates. Lastly, two authors reviewed full texts and identified a total of 19 bimodal fitting articles. Results were categorized into type of bimodal intervention, procedures, and outcomes. Bimodal fitting procedures, test materials, and questionnaires were also summarized. A total of 18 articles consist of bimodal hearing aid fitting covering hearing aid fitting formula, gain adjustment, loudness balance, frequency band, frequency lowering technology, and overall bimodal fitting guidelines. Only one article includes bimodal cochlear implant fitting with low frequency band adjustment. Several factors including real-ear measurement, loudness balance test, frequency band selection considering cochlear dead region, and subjective questionnaires are considered to optimize bimodal hearing aid fitting. Bimodal fitting guidelines considering several relevant factors will optimize bimodal fitting and improve bimodal benefits.

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.

The Developing Relationship Among Cognition, Amplification, and Aural Rehabilitation

2016 ◽  
Vol 1 (6) ◽  
pp. 47-54 ◽  
Author(s):  
Jeffrey J. DiGiovanni ◽  
Travis L. Riffle
Keyword(s):  
Working Memory ◽  
Best Practices ◽  
Cognitive Abilities ◽  
Hearing Aid ◽  
Hearing Aid Fitting ◽  
Aural Rehabilitation ◽  
Basic Concepts ◽  
And Function

The search for best practices in hearing aid fittings and aural rehabilitation has generally used the audiogram and function stemming from peripheral sensitivity. In recent years, however, we have learned that individuals respond differently to various hearing aid and aural rehabilitation techniques based on cognitive abilities. In this paper, we review basic concepts of working memory and the literature driving our knowledge in newer concepts of hearing aid fitting and aural rehabilitation.

scholarly journals Personal Style and Hearing Aid Fitting

2002 ◽  
Vol 6 (1) ◽  
pp. 1-31 ◽  
Author(s):  
Robert M. Traynor ◽  
Alice E. Holmes
Keyword(s):  
Hearing Aid ◽  
Personal Style ◽  
Hearing Aid Fitting
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