Method of recognizing speech pauses

Details Method of recognizing speech pauses Method of recognizing speech pauses

1983-11-17

1987-10-13

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

047003944

ABSTRACT:
Method of recognizing pauses in a speech signal when a slowly varying noise signal is superposed on the speech signal. For the purpose of pause recognition so-called short-time mean values connected with a clock pulse are continuously determined from the samples of the disturbed speech signal, which short time mean values are a measure of the average power of approximately 100 ms long sections of the disturbed speech signals. The sequence of these short-time mean values is then smoothed by linear filtration or by means of a median filter. In parallel with the smoothing operation an estimate for the noise signal power averaged over a few seconds is taken from the sequence of short-time mean values. If the smoothed short-time mean value is once or several times less than a threshold which is proportional to the above-mentioned estimate, then it is decided that there is a speech pause.

REFERENCES:
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4028496 (1977-06-01), LaMarche et al.
patent: 4052568 (1977-10-01), Jankowski
patent: 4531228 (1985-07-01), Noso et al.
patent: 4597098 (1986-06-01), Noso et al.

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