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Speech analysis-synthesis apparatus and method

  • US 4,776,015 A
  • Filed: 12/05/1985
  • Issued: 10/04/1988
  • Est. Priority Date: 12/05/1984
  • Status: Expired due to Fees
First Claim
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1. A speech analysis apparatus comprising:

  • means to input speech;

    analyzing means for analyzing the speech input to obtain spectral envelope information;

    means for determining an impulse response from said spectral envelope information;

    means for determining a factor for effecting perceptual weighting in a manner to correspond to a sound source pulse number;

    means for determining a cross-correlation between the input speech and said impulse response, wherein both are perceptually weighted on the basis of said factor;

    means for determining an auto-correlation from the impulse response which is perceptually weighted on the basis of said factor; and

    means for generating sound source information necessary for the speech analysis from said cross-correlation, said auto-correlation and said sound source pulse number.

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