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SPEECH SIGNAL PITCH DETECTOR USING PREDICTION ERROR DATA

  • US 3,740,476 A
  • Filed: 07/09/1971
  • Issued: 06/19/1973
  • Est. Priority Date: 07/09/1971
  • Status: Expired due to Term
First Claim
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1. A signal analyzer for determining the fundamental period of a speech signal, which comprises, adaptive predictor means supplied with samples of said speech signal for predicting the present value of each sample on the basis of a weighted summation of a number of prior sample values of said speech signal, means for subtracting said predicted speech value from the actual speech value to develop a difference signal, and means for determining the fundamental frequency of said difference signal as an indication of the fundamental period of said speech signal.

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