The September, 1998 issue of the IEEE Signal Processing Magazine had a
tutorial article on the design and performance of cochlear implants,
which attempt to provide audio information to profoundly deaf people
by stimulating the nerves in the inner ear. These devices don't all
use the same signal processing strategies, and researchers are always
trying to improve them.
The University of Arkansas at Little Rock has been acoustically
simulating the sound of these implants. To hear a series of
demonstrations with different numbers of channels and different depths
of insertion into the cochlea (which results in different amounts of
frequency shift) you can listen to WAV files from
http://giles.sgilab.ualr.edu/asd/cimplants/chome.htm
It uses frames, but works quite well with Lynx. The sampling rates
are a little odd, but the files should be playable.
-- Lloyd Rasmussen
Senior Staff Engineer, Engineering Section
National Library Service for the Blind and Physically Handicapped
Library of Congress 202-707-0535
(work) lras@loc.gov http://www.loc.gov/nls/
(home) lras@sprynet.com http://home.sprynet.com/sprynet/lras/
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