Speech processor

Details Speech processor Speech processor

G - Physics

10

L

330/39, 354/54

G10L 15/20 (2006.01) G10L 11/02 (2006.01) G10L 15/00 (2006.01) G10L 21/02 (2006.01)

Patent

CA 1310418

ABSTRACT SPEECH PROCESSOR In a speech processor such as a speech recogniser, the problem of distortion of extracted features caused by adaption of the input automatic gain control (AGC) during feature extraction is solved by storing the AGC's gain coefficient along with the energy level of each extracted feature. At the end of the sampling period the stored gain coefficients are set equal to the minimum stored coefficient and the associated energy levels adjusted accordingly. The AGC circuit may comprise a digitally switched attenuator under the control of a microprocessor performing the speech recognition.

538514

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