PMID: 3745660Jul 1, 1986Paper

A hardware cochlear nonlinear preprocessing model with active feedback

The Journal of the Acoustical Society of America
E Zwicker

Abstract

A hardware model of the nonlinear preprocessing established in the inner ear consisting of 90 sections corresponding to a frequency range from 900 to 8000 Hz is described. The model is based on assumptions described by Zwicker [Biol. Cybern. 35, 243-250 (1979)]: The outer hair cells act as saturating nonlinear mechanical amplifiers which feed back to the vibration of the basilar membrane while only the inner hair cells transfer information towards higher centers. The model shows many effects which correlate very closely to physiological and psychoacoustical counterparts. Quantitative data on the level-dependence of frequency responses and phase responses as well as an example of suppression are outlined.

Citations

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