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Noise reduction using correction vectors based on dynamic aspects of speech and noise normalization

  • US 20050259558A1
  • Filed: 07/26/2005
  • Published: 11/24/2005
  • Est. Priority Date: 04/05/2002
  • Status: Active Grant
First Claim
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1. A method for reducing noise in a noisy input signal, the method comprising:

  • converting a frame of the noisy input signal into an input feature vector;

    selecting a mixture component of a trained model based at least in part on the input feature vector;

    identifying a correction vector that incorporates dynamic aspects of a pattern signal based on the selected mixture component, the correction vector having at least one delta coefficient; and

    adding the correction vector to the input feature vector to form a clean feature vector.

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