Method for determining the fundamental frequency of a voice signal
First Claim
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1. A method of determining the fundamental frequency of a voice signal comprising:
- feeding the original voice signal to a predictor to form an estimated voice signal;
subtracting said estimated voice signal from said original voice signal to form a difference signal;
auto correlating only the significant characteristic of said difference signal; and
determining the maxima of the correlation coefficients as a measure of the fundamental frequency.
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Abstract
A method of determining the fundamental frequency or pitch period of a voice signal from a difference signal, formed with the aid of predictors, between the original voice signal and the voice signal estimated by the predictor. Only the significant characteristics of the difference signal are then auto-correlated and the maxima of the correlation coefficients determine the fundamental frequency or pitch period.
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7 Claims
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1. A method of determining the fundamental frequency of a voice signal comprising:
feeding the original voice signal to a predictor to form an estimated voice signal;
subtracting said estimated voice signal from said original voice signal to form a difference signal;
auto correlating only the significant characteristic of said difference signal; and
determining the maxima of the correlation coefficients as a measure of the fundamental frequency.- View Dependent Claims (2, 3, 4, 5, 6, 7)
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