Speech recognition system in which voiced intervals are broken i

Details Speech recognition system in which voiced intervals are broken i Speech recognition system in which voiced intervals are broken i

1989-10-20

1990-12-18

Shaw, Dale M.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 41, G10L 708, G10L 906

Patent

active

049792121

ABSTRACT:
In a speech recognition system which performs a frequency analysis of speech input and determines its spoken interval, a time-normalized pattern (matching pattern) is prepared for use in similarity calculations. In the time-normalization, the time axis is segmented in such a manner as to cancel the effects of differences in the length of syllables in the input speech. With such normalization, it is possible to achieve high performance in linear matching of the input speech pattern against reference patterns using simple processing and a small memory space even when there are variations in the speaking rate.

REFERENCES:
patent: 3582559 (1971-06-01), Hitchcock
patent: 4481593 (1984-11-01), Bahler
patent: 4696042 (1987-09-01), Goudie
Lamel et al., "An Improved Endpoint Detector for Isolated Word Recognition", IEEE Trans. on ASSP, vol. ASSP-29, No. 4, Aug. 1981.
1985 IEEE, pp. 842-845, "Speaker Independent Telephone Speech Recognition", Hiroshi Iizuka.

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