Speech recognition apparatus

Details Speech recognition apparatus Speech recognition apparatus

1984-05-08

1987-12-08

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

047122439

ABSTRACT:
The present invention provides a speech recognition apparatus for recognizing speech by converting voice signal into digital data. The apparatus performs a two-stage Dynamic Programming (DP) operation comprising a pre-stage and post-stage operation. The pre-stage DP operation is conducted with regard to the inputted digital voice data selected along a time axis and standard pattern data formed in advance in correspondence with voice and stored in a memory, thereby selecting several standard pattern data as the candidates. The post-stage DP operation is further conducted with regard to the inputted digital voice signals and the selected candidates of standard pattern data. Thus, the DP operation time of the present apparatus is shortened and a work area of a memory is decreased.

REFERENCES:
patent: 4241329 (1980-12-01), Bahler et al.
patent: 4488243 (1984-12-01), Brown et al.
patent: 4559604 (1985-12-01), Ichikawa et al.
patent: 4593403 (1986-06-01), Kishi et al.

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