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Voice activity detector

  • US 8,374,861 B2
  • Filed: 08/13/2012
  • Issued: 02/12/2013
  • Est. Priority Date: 05/12/2006
  • Status: Active Grant
First Claim
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1. A voice activity detection method, comprising:

  • calculating, by a processor, a variance of a signal-to-noise ratio across a plurality of portions of a signal;

    calculating, by the processor, a value based on the variance of the signal-to-noise ratio;

    performing, by the processor, a comparison between the value and a threshold; and

    identifying, by the processor, whether the signal contains speech based on the comparison between the value and the threshold.

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