Speech detection apparatus not affected by input energy or backg

Details Speech detection apparatus not affected by input energy or backg Speech detection apparatus not affected by input energy or backg

1991-04-09

1994-03-08

Fleming, Michael R.

G10L 900

Patent

active

052935884

ABSTRACT:
A speech detection apparatus capable of reliably detecting speech segments in audio signals regardless of the levels of input audio signals and background noises. In the apparatus, a parameter of input audio signals is calculated frame by frame, and then compared with a threshold in order to judge each input frame as one of a speech segment and a noise segment, while the parameters of the input frames judged as the noise segments are stored in the buffer and the threshold is updated according to the parameters stored in the buffer. The apparatus may utilize a transformed parameter obtained from the parameter, in which the difference between speech and noise is emphasized, and noise standard patterns are constructed from the parameters of the input frames pre-estimated as noise segments.

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P. DeSouza, IEEE Transactions on Acoustics, Speech, and Signal Processing, "A Statistical Approach to the Design of an Adaptive Self-Normalizing Silence Detector", vol. ASSP-31, No. 3, Jun. 1983, pp. 678-684.

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