Speech signal fundamental period extractor

Details Speech signal fundamental period extractor Speech signal fundamental period extractor

G - Physics

10

L

354/53

G10L 11/04 (2006.01)

Patent

CA 1061906

ABSTRACT OF THE DISCLOSURE For an analysis of the sound source of speech, a fre- quency spectrum analysis is previously effected and the speech wave is applied to a circuit having a characteristic inverse to the frequency spectrum to make the frequency spectrum substantially flat and a residual value composed of an impulse train of the sound source or a noise is picked up and analyzed, whereby a sound source signal is extracted. For an economical construction of such a speech analyzer, unneces- sary high frequency components contained in the residual value are cut off by a low-pass filter to enable low-bits quantiza- tion of the residual value and the correlation coefficient of the residual value is utilized to thereby enable a speech fundamental period extractor to be, formed with low-speed elements. - 1 -

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