Speech analysis system

Details Speech analysis system Speech analysis system

1983-04-21

1987-01-13

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

046370463

ABSTRACT:
A speech analysis system in which segments of digitized speech are transformed into amplitude spectrums. For the voiced/unvoiced decision use is made of the peak value or spectral intensity in each amplitude spectrum. Basically a voiced decision is made when the spectral intensity increases monotonically over several segments by more than a given factor. An unvoiced decision is made if the spectral intensity drops below a given fraction of the maximum spectral 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), Sommague
patent: 4351983 (1982-09-01), Crouse et al.
patent: 4359604 (1982-11-01), Dumont
patent: 4441200 (1984-04-01), Fette et al.
Rabinev et al., IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-24, No. 5, Oct. 1976, pp. 399-418.

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