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Method of measuring degree of enhancement to voice signal

  • US 7,818,168 B1
  • Filed: 12/01/2006
  • Issued: 10/19/2010
  • Est. Priority Date: 12/01/2006
  • Status: Active Grant
First Claim
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1. A method of measuring the degree of enhancement made to a voice signal, comprising the steps of:

  • a) receiving, on a digital signal processor, the voice signal;

    b) identifying, on the digital signal processor, a user-definable number of formant regions in the voice signal;

    c) computing, on the digital signal processor, stationarity for each formant region identified in the voice signal;

    d) enhancing, on the digital signal processor, the voice signal;

    e) identifying, on the digital signal processor, formant regions in the enhanced voice signal that correspond to those identified in step (b);

    f) computing, on the digital signal processor, stationarity for each formant region identified in the enhanced voice signal;

    g) comparing, on the digital signal processor, corresponding results of step (c) and step(f); and

    h) calculating, on the digital signal processor, at least one user-definable statistic of the results of step (g) as the degree of enhancement made to the voice signal.

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