An amplitude-bandwidth expansion method for hearing-aid adjustment.

Med Eng Phys

Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-5-11 Takeda, Kofu 400 8511, Japan.

Published: January 2005

AI Article Synopsis

  • The proposed technique allows a person with normal hearing to adjust a hearing aid using an amplitude-bandwidth expansion method, tailoring the output to meet the user's specific hearing needs.
  • This method contrasts with cochlear compression by expanding sound, but it may introduce distortion and reduce the expansion rate, which are challenges that the technique aims to address.
  • The adjusted output closely resembles the original speech signal, making it nearly undetectable, suggesting that this approach could be valuable for audiologists in setting up hearing aids for patients.

Article Abstract

The basic concept for a technique that facilitates the adjustment of a hearing aid by a person of normal hearing is proposed. The technique involves processing using an amplitude-bandwidth expansion method to expand the hearing-aid output to fit to the user's hearing requirements and loudness recruitment. The expansion is a reversal of the cochlear compression model. As the expansion method introduces distortion of the waveform and a reduction of the expansion rate, the support technique presented here includes solutions to these problems. The difference between the original speech signal and the expanded output generated from the compressed output of the original signal is virtually inaudible. This technique, which effectively simulates a patient's hearing characteristics in order to allow an audiologist to set up a patient's hearing aid, is worth further investigation.

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Source
http://dx.doi.org/10.1016/j.medengphy.2004.08.017DOI Listing

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