Method and apparatus for speech message recognition

Details Method and apparatus for speech message recognition Method and apparatus for speech message recognition

1981-12-31

1985-04-02

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 100

Patent

active

045091862

ABSTRACT:
Speech recognition by first log-compressing the speech signal, then filtering into subband signals which are subtracted to form an indicator of voiced, unvoiced and silence intervals, whereby sequence and duration patterns are coded in +1, -1, and zero.

REFERENCES:
patent: 3261916 (1966-07-01), Bakis
patent: 3450989 (1969-06-01), Dickenson
patent: 3679830 (1972-07-01), Uffelman et al.
patent: 3846586 (1974-11-01), Griggs
patent: 3946157 (1976-03-01), Dreyfus
patent: 4297528 (1981-10-01), Beno

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