Zero-crossing based compression hearing aid

The motivation of this thesis research was to develop an experimental compression hearing aid that would allow fast attackhelease compression without excessive waveform distortions such as those produced by conventional envelope-based (EVB) compression hearing aids. A zero-crossing-based (ZXB) proce...

Full description

Saved in:
Bibliographic Details
Main Author: Tan, Chin Tuan.
Other Authors: Chang, Joseph Sylvester
Format: Theses and Dissertations
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10356/3337
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
id sg-ntu-dr.10356-3337
record_format dspace
spelling sg-ntu-dr.10356-33372023-07-04T15:39:03Z Zero-crossing based compression hearing aid Tan, Chin Tuan. Chang, Joseph Sylvester School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing The motivation of this thesis research was to develop an experimental compression hearing aid that would allow fast attackhelease compression without excessive waveform distortions such as those produced by conventional envelope-based (EVB) compression hearing aids. A zero-crossing-based (ZXB) processing scheme for fast attackhelease compression was proposed. The efficacy of a single-channel and two multichannel ZXB compression hearing aids was evaluated by comparing the speech perceptual performances of these three hearing aids with those of a single-channel linear hearing aid and a conventional single-channel fast attackhelease EVB compression hearing aid. The NST consonant test was administered on two hearing impaired subjects. The results showed that the speech perceptual performances of the ZXB hearing aids were better than those of the linear and EVB compression hearing aids. Analysis of the confusion matrices in terms of articulatory features showed that the superior performance of the ZXB hearing aids can be attributed to the successfulamplification of low intensity consonants by the ZXB compression process which reduces substantially the waveform distortions introduced by the conventional EVB process. Doctor of Philosophy (EEE) 2008-09-17T09:27:44Z 2008-09-17T09:27:44Z 2000 2000 Thesis http://hdl.handle.net/10356/3337 Nanyang Technological University application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
topic DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
Tan, Chin Tuan.
Zero-crossing based compression hearing aid
description The motivation of this thesis research was to develop an experimental compression hearing aid that would allow fast attackhelease compression without excessive waveform distortions such as those produced by conventional envelope-based (EVB) compression hearing aids. A zero-crossing-based (ZXB) processing scheme for fast attackhelease compression was proposed. The efficacy of a single-channel and two multichannel ZXB compression hearing aids was evaluated by comparing the speech perceptual performances of these three hearing aids with those of a single-channel linear hearing aid and a conventional single-channel fast attackhelease EVB compression hearing aid. The NST consonant test was administered on two hearing impaired subjects. The results showed that the speech perceptual performances of the ZXB hearing aids were better than those of the linear and EVB compression hearing aids. Analysis of the confusion matrices in terms of articulatory features showed that the superior performance of the ZXB hearing aids can be attributed to the successfulamplification of low intensity consonants by the ZXB compression process which reduces substantially the waveform distortions introduced by the conventional EVB process.
author2 Chang, Joseph Sylvester
author_facet Chang, Joseph Sylvester
Tan, Chin Tuan.
format Theses and Dissertations
author Tan, Chin Tuan.
author_sort Tan, Chin Tuan.
title Zero-crossing based compression hearing aid
title_short Zero-crossing based compression hearing aid
title_full Zero-crossing based compression hearing aid
title_fullStr Zero-crossing based compression hearing aid
title_full_unstemmed Zero-crossing based compression hearing aid
title_sort zero-crossing based compression hearing aid
publishDate 2008
url http://hdl.handle.net/10356/3337
_version_ 1772825827910615040