Adaptive filter pitch extraction

Details Adaptive filter pitch extraction Adaptive filter pitch extraction

2011-05-24

2011-05-24

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C708S300000, C705S042000, C704S271000, C704S258000, C704S223000, C704S219000, C704S217000, C704S208000, C381S092000, C375S240000

Reexamination Certificate

active

07949520

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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