Method and apparatus for simulating aural response information

Details Method and apparatus for simulating aural response information Method and apparatus for simulating aural response information

G - Physics

10

K

354/1

G10K 9/10 (2006.01) G10K 7/04 (2006.01) G10L 11/00 (2006.01) H04R 25/00 (2006.01)

Patent

CA 1219953

METHOD AND APPARATUS FOR SIMULATING AURAL RESPONSE INFORMATION ABSTRACT OF THE DISCLOSURE Speech and like signals are analyzed based on a model of the function of the human hearing system. The model of the inner ear is expressed as signal pro- cessing operations which map acoustic signals into neural representations. Specifically, a high order transfer function is modeled as a cascade/parallel filterbank network of simple linear, time-invariant second-order filter sections. Signal transduction and compression are based on a half-wave rectification with a non-linearly coupled, variable time constant automatic gain control network. The result is a simple device which simulates the complex signal transfer function associated with the human ear. The invention lends itself to implementation in digital circuitry for real-time or near real-time processing of speech and other sounds.

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