Adaptive filter pitch extraction

Details Adaptive filter pitch extraction Adaptive filter pitch extraction

G - Physics

10

L

G10L 11/04 (2006.01)

Patent

CA 2569223

ABSTRACT An enhancement system extracts pitch from a processed speech signal. The system estimates the pitch of voiced speech by deriving filter coefficients of an adaptive filter and using the obtained filter coefficients to derive pitch. The pitch estimation may be enhanced by using various techniques to condition the input speech signal, such as spectral modification of the background noise and the speech signal, and/or reduction of the tonal noise from the speech signal.

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