Electronic simulator of non-linear and active cochlear spectrum

Details Electronic simulator of non-linear and active cochlear spectrum Electronic simulator of non-linear and active cochlear spectrum

1992-11-02

1995-03-28

Isen, Forester W.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 60, H04R 2500

Patent

active

054024935

ABSTRACT:
A model simulating cochlear spectrum analysis is disclosed which includes a pair of matched all pole lattices interconnected by a plurality of tip couplers providing non-linear distributed bilateral signal processing. One of the lattices along with the tip couplers corresponds to the organ of Corti found in the cochlea and the second lattice corresponds to the basilar membrane also found in the cochlea such that the model provides a striking resemblance in structure to the physical properties of the cochlea itself. With the cochlea model disclosed, distortion products and otoacoustic emissions are simulated. An intermediate model is also disclosed which provides bilateral signal processing but lacks distributed amplification.

REFERENCES:
patent: 3989904 (1976-11-01), Rohrer et al.
patent: 4536844 (1985-08-01), Lyon
Introduction to Distributed Amplification by Harry Stockman, Second Editioin, 1956, Preface p. vii.
Article entitled Digital Signal Processing With the TMS320C25 by Rulph Chassaing et al, published by Wiley-Interscience Publication, 1990, pp. xiii-14.
Article entitled Micromechanical Models of the Cochlea by Jont Allen et al, published in Physics Today, Jul. 1992, pp. 40-47.
Article entitled Adequacy of auditory models to predict human internal representation of speech sounds by Oded Ghitza, published in the J. Accoust. Soc. Am. 93 (4), Apr. 1993, pp. 2160-2171.
Article entitled Electronic Amplifier Circuits - Theory and Design, by Joseph M. Pettit et al, published by McGraw-Hill, New York, 1961, pp. 147-163.

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