Estimation of excitation parameters

Details Estimation of excitation parameters Estimation of excitation parameters

1994-04-04

1998-02-03

Macdonald, Allen R.

395 232, G10L 302

Patent

active

057153655

ABSTRACT:
A method of encoding speech analyzes a digitized speech signal to determine excitation parameters for the digitized speech signal. The method includes dividing the digitized speech signal into at least two frequency bands, performing a nonlinear operation on at least one of the frequency bands to produce a modified frequency band, and determining whether the modified frequency band is voiced or unvoiced. The nonlinear operation is an operation that emphasizes a fundamental frequency of the digitized speech signal so that the modified frequency band signal includes a component corresponding to the fundamental frequency even when the at least one frequency band signal does not include such a component.

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