Title :
A CMOS VLSI cochlea
Author :
Lyon, Richard F. ; Mead, Carver A.
Author_Institution :
Schlumberger Res., Palo Alto, CA, USA
Abstract :
An analog electronic cochlea has been built in CMOS VSLI technology using micropower techniques to achieve the goal of usefulness via realism. The key point of the model and circuits 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 cochlea
Keywords :
CMOS integrated circuits; VLSI; biomedical electronics; ear; filtering and prediction theory; filters; physiological models; CMOS VLSI cochlea; active gain; adaptation; analog electronic cochlea; controllable Q parameters; filter cascade; fluid-dynamic traveling-wave system; micropower techniques; outer hair cells; second-order filter stages; test chip; Auditory system; CMOS technology; Circuit testing; Damping; Filters; Hair; Nervous system; Semiconductor device modeling; Systems engineering and theory; Very large scale integration;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197063
