Dual-step sound pattern matching

Details Dual-step sound pattern matching Dual-step sound pattern matching

1986-04-30

1988-10-04

Kemeny, Manuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

047760176

ABSTRACT:
A sound or speech recognition system is made faster by first using data-reduced patterns to find candidates in preliminary testing, and then making a final decision by testing against full-data patterns. Specifically, a signal is transformed to a time-sequence of spectral vectors, which forms a full-data pattern. Then, a predetermined number of vectors representing the beginning or front-end of the signal are duplicated and summed to form a sum spectral vector which is used as the data-reduced pattern for preliminary testing.

REFERENCES:
patent: 3969698 (1976-07-01), Bollinger et al.
patent: 4516215 (1985-05-01), Hakaridani et al.
patent: 4677673 (1987-06-01), Ukita et al.

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