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Method of determining uncertainty associated with acoustic distortion-based noise reduction

  • US 7,289,955 B2
  • Filed: 12/20/2006
  • Issued: 10/30/2007
  • Est. Priority Date: 05/20/2002
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • reducing noise in a representation of a portion of a noisy signal to produce a representation of a portion of a noise-reduced signal using an acoustic-environment model;

    identifying an uncertainty associated with reducing the noise by computing a difference between an expectation for the square of the portion of the noise-reduced signal and the square of the expectation for the portion of the noise-reduced signal; and

    using the uncertainty and the portion of the noise-reduced signal to decode a pattern state.

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