Speech analysis system

Details Speech analysis system Speech analysis system

1983-04-21

1986-11-25

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

046253270

ABSTRACT:
Speech analysis system in which segments of speech are analyzed. For the voiced/unvoiced decision use is made of the average magnitude or waveform intensity of successive speech segments. Basically a voiced decision is made when the waveform intensity increases monotonically over several segments by more than a given factor. An unvoiced decision is made if the waveform intensity drops below a given fraction of the maximum waveform intensity in the current voiced period. Refinements in the decisions are made by the use of fixed and adaptive thresholds.

REFERENCES:
patent: 4015088 (1977-03-01), Dubnowski et al.
patent: 4331837 (1982-05-01), Soumagne
patent: 4351983 (1982-09-01), Crouse et al.
patent: 4359604 (1982-11-01), Du Mont
patent: 4441200 (1984-04-01), Fette et al.
Rabiner, et al., "A Comparative Performance Study of Several Algorithms", IEEE Trans. on Acoustics, S and SP, Oct. 1976, pp. 399-418.

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