Binary autocorrelation processor

Details Binary autocorrelation processor Binary autocorrelation processor

1985-08-05

1989-08-22

Harkcom, Gary V.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 43, 36472807, G10L 908, G10L 708, G06F 15336

Patent

active

048603570

ABSTRACT:
A system for converting known speech segments into machine storable binary signals for the purpose of later attempting a match between a stored signal and an incoming signal using autocorrelation techniques. Through the use of a clipper and a sample and hold register, the system converts an incoming speech signal into a bit stream signal. Two successive groups of bits called frames are stored in separate registers. A bit-by-bit correlation is performed on the bits stored in the separate registers and a counter is indexed as a function of the correlation. A memory is provided for maintaining a record of the counts associated with each speech segment for later attempting computer pattern matching against received unknown speech segments.

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patent: 4477925 (1984-10-01), Avery et al.
patent: 4593378 (1986-06-01), McWhirter et al.
patent: 4715065 (1987-12-01), Parker
patent: 4775951 (1988-10-01), Iwahashi et al.

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