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Re: AUDITORY Digest - 18 Jul 2009 (#2009-164)

lots of interesting questions.

Look at the following paper, for our best guess:
Allen, Jont and Li, Feipeng (2009). Speech perception and cochlear signal processing, IEEE Signal Processing Magazine, Invited: Life-sciences, 26(4), pp 73-77, July 

There is a preprint pdf and a djvu galley, on line at
http://hear.ai.uiuc.edu/wiki/Main/Publications/

Also I suggest you look at:
S. A. Phatak, Y. Yoon, D. M. Gooler, and J. B. Allen. Consonant loss profiles for hearing impaired listeners, J. Acoust. Soc. Am., (2008) (Accepted with minor revisions 6/9/09) 
Again, a pdf is available on the website.

Also ck out the "Demos" at
http://hear.ai.uiuc.edu/wiki/Files/VideoDemos
http://hear.ai.uiuc.edu/wiki/Files/
A detailed resp to your important questions would talk an hour, and the issues you ask about are discussed in the papers, hither and yon. 

Some of the questions are answered in:
Feipeng Li and Jont B. Allen. (2009) Manipulation of Consonants in Natural Speech; which as it says, is "In preparation." 

Jont

AUDITORY automatic digest system wrote:

There is 1 message totalling 69 lines in this issue.

Topics of the day:

  1. AUDITORY Digest - 17 Jul 2009 to 18 Jul 2009 - Special issue (#2009-163)

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Date:    Sat, 18 Jul 2009 16:43:44 -0700
From:    Margaret Mortz <migsmortz@xxxxxxxxxxxx>
Subject: Re: AUDITORY Digest - 17 Jul 2009 to 18 Jul 2009 - Special issue (#2009-163)

Jont,

You have just reminded us of the terrific pioneering research that was
done at Bell Labs by many, yourself included.  The unfortunate closing
of the Labs and the spreading out of Bell people may have energized
many other institutions.

I went to your website to look at your recent  research on hearing aids.
http://www.ece.illinois.edu/news/headlines/hl-allen-hearing-aid.html
 As a long-term hearing aid wearer (childhood measles/mumps; later
Meniere's), I agree that hearing aids don't work well, especially in
noisy situations. The latest models have many helpful features, but
there's still a performance gap.

If your testing can find the critical cochlear and post-cochlear
components of an individual's hearing loss, what type of signal
processing would be needed to compensate?  Phonak and other aids have
some noise reduction algorithms, adaptive directional mikes, multiband
frequency channels, and adaptive compression in multiple listening
programs.  Still something seems missing.  What else is needed?

I'm also curious on how the olivocochlear connections to the cochlea
affect the ability of a healthy ear to understand speech in noise,
specifically "cocktail" party noise..  Are there any connections  fast
enough to respond to the pitch/prosody of speech that could allow
real-time cochlear tuning?

Margaret


les of the outer hair cells to improve hearing aids.  In a healthy
ear, how does the feedback back from the brain adapt the coch to allow
better hearing in a cocktail situation?  Is the


Assuming you can find electronics that can




On Sat, Jul 18, 2009 at 11:24 AM, AUDITORY automatic digest
system<LISTSERV@xxxxxxxxxxxxxxx> wrote:

AUDITORY Digest - 17 Jul 2009 to 18 Jul 2009 - Special issue (#2009-163)

Table of contents:

AUDITORY Digest - 16 Jul 2009 to 17 Jul 2009 (#2009-162) (3)

AUDITORY Digest - 16 Jul 2009 to 17 Jul 2009 (#2009-162)

Re: AUDITORY Digest - 16 Jul 2009 to 17 Jul 2009 (#2009-162) (07/18)
From: Jont Allen <jontalle@xxxxxxxx>
Re: AUDITORY Digest - 16 Jul 2009 to 17 Jul 2009 (#2009-162) (07/18)
From: Christine Rankovic <rankovic@xxxxxxxxxxxxxxxx>
Re: AUDITORY Digest - 16 Jul 2009 to 17 Jul 2009 (#2009-162) (07/18)
From: Jont Allen <jontalle@xxxxxxxx>

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End of AUDITORY Digest - 18 Jul 2009 (#2009-164)
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