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Formant tracker

  • US 4,424,415 A
  • Filed: 08/03/1981
  • Issued: 01/03/1984
  • Est. Priority Date: 08/03/1981
  • Status: Expired due to Fees
First Claim
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1. A formant tracker for receiving an analog signal, said formant tracker comprising:

  • means for tracking a pitch associated with the analog signal and generating a fundamental frequency therefrom; and

    means operably coupled to the output of said pitch tracking means for receiving the fundamental frequency of the analog signal to determine at least one formant within a frequency spectrum in which the analog signal is found, said formant determining means includingmeans establishing an integer set including a plurality of integers associated with at least a selected frequency range containing said at least one formant and within said frequency spectrum in which the analog signal is found, andmeans for establishing within said integer set over the plurality of integers contained therein an optimal integer for said selected frequency range within said frequency spectrum from said integer set and a bandwidth associated with said optimal integer;

    said formant determining means generating said at least one formant in response to the product of said optimal integer and said fundamental frequency.

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