Analysis arrangement based on a model of human neural responses

Details Analysis arrangement based on a model of human neural responses Analysis arrangement based on a model of human neural responses

1989-02-28

1990-02-27

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

3645135, 364487, 128419R, G10L 500

Patent

active

049052853

ABSTRACT:
A sensory type pattern such as a speech or other sound pattern is analyzed to obtain the spectral distribution of the neural response thereto. A plurality of logarithmically related neural response intensity threshold signals is formed. The frequency spectrum of the sensory type pattern is divided into a plurality of overlapping spectral portions and the waveform of each prescribed spectral portion is partitioned into successive time segments. For the current time segment of each spectral portion waveform, the time intervals between crossings of the neural response intensity threshold level signals by the spectral portion waveform are detected and signals representative of the counts of inverse time intervals between the crossings of the plurality of levels are generated to form an inverse time interval histogram for the spectral portion. The inverse time interval histogram signals for the plurality of spectral portions are combined to produce a signal corresponding to the spectral distribution of the neural response to the sensory type pattern of the time segment.

REFERENCES:
patent: 4075423 (1978-02-01), Martin et al.
patent: 4532930 (1985-08-01), Crosby et al.
patent: 4536844 (1985-08-01), Lyon
Electronics, vol. 57, "Recognition System Processes Speech the Way the Ear Does", J. R. Lineback, pp. 45-46.
IEEE ASSP Magazine, 1/85, "Cochlear Modeling", J. B. Allen, pp. 3-29.
Journal of the Acoustical Society of America, vol. 63, 1978, "Auditory-Nerve Response from Cats Raised in a Low-Noise Chamber", pp. 442-455, M. C. Liberman.

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