Linear predictive speech analysis-synthesis apparatus

Details Linear predictive speech analysis-synthesis apparatus Linear predictive speech analysis-synthesis apparatus

G - Physics

10

L

354/53

G10L 19/06 (2006.01)

Patent

CA 1328509

ABSTRACT A linear predictive speech analysis-synthesis apparatus has an exciting source signal generator for generating an exciting source signal in response to linear predictive coefficients and a pitch parameter and a speech synthesizing filter for filtering the exciting source signal by a function defined by the linear predictive coefficients and a damping factor. A cascade frequency characteristic of the spectral envelope frequency characteristic of the exciting source signal generator and the spectral envelope frequency characteristic of the speech synthesizing filter is designated to correspond to a spectral envelope characteristic of an input speech signal. The apparatus is capable of synthesizing a speech signal having excellent sound quality while avoiding concentration of energy and securing the accordance of the spec- tral structure between an input speech signal and a synthesized output speech signal.

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