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Acoustic signal enhancement system

  • US 20050222842A1
  • Filed: 05/24/2005
  • Published: 10/06/2005
  • Est. Priority Date: 08/16/1999
  • Status: Active Grant
First Claim
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1. A method for enhancing an input signal, the method comprising:

  • determining a time-frequency representation of a noisy input signal;

    estimating a background noise level and a signal-to-noise ratio;

    determining a matching low noise signal template for the time-frequency representation; and

    replacing a portion of the time-frequency representation with a mix of the time-frequency representation and the matching low noise signal template, the mix weighted by the signal-to-noise ratio.

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