An analog electronic cochlea

An analog electronic cochlea has been built in CMOS VLSI technology using micropower techniques. The key point of the model and circuit is that a cascade of simple, nearly linear, second-order filter stages with controllable Q parameters suffices to capture the physics of the fluid-dynamic traveling...

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Bibliographic Details
Published in:IEEE transactions on acoustics, speech, and signal processing speech, and signal processing, 1988-07, Vol.36 (7), p.1119-1134
Main Authors: Lyon, R.F., Mead, C.
Format: Article
Language:English
Subjects:
Circuit testing
CMOS technology
Hair
Nonlinear filters
Physics
Semiconductor device measurement
Semiconductor device modeling
Very large scale integration
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Summary:An analog electronic cochlea has been built in CMOS VLSI technology using micropower techniques. The key point of the model and circuit is that a cascade of simple, nearly linear, second-order filter stages with controllable Q parameters suffices to capture the physics of the fluid-dynamic traveling-wave system in the cochlea, including the effects of adaptation and active gain involving the outer hair cells. Measurements on the test chip suggest that the circuit matches both the theory and observations from real cochleas.< >
ISSN:0096-3518
DOI:10.1109/29.1639