Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!apple.com!zarko
From: zarko@apple.com (Zarko Draganic)
Newsgroups: comp.dsp
Subject: Re: DSP Hearing Aids?
Message-ID: <10810@goofy.Apple.COM>
Date: 19 Oct 90 04:36:06 GMT
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
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References:<1990Oct16.163935.1954@ux1.cso.uiuc.edu> <33682@nigel.ee.udel.edu> <952@eplunix.UUCP>

There was a neat project going on when I was in college last year (I 
didn't get the chance to work on it). The basic idea was to apply pattern 
recognition techniques to the input audio signal, and recognize the voiced 
plosive phonemes (which are very troublesome in certain types of hearing 
imparments involving large high frequency attenuations). The recognized 
phonemes would then be substituted with "in-band" phonemes, synthesized or 
taken from a foreign language. Gradually the user would map the new, 
in-band phonemes to the lost voiced plosives.  Don't know how far it's 
come or if anyone other than the U. of Waterloo is working on it; know of 
any similar efforts?