System, method and apparatus for cancelling noise

  • US 6,363,345 B1
  • Filed: 02/18/1999
  • Issued: 03/26/2002
  • Est. Priority Date: 02/18/1999
  • Status: Expired due to Term
First Claim
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1. An apparatus for canceling noise, comprising:

  • an input for inputting an audio signal which includes a noise signal;

    a frequency spectrum generator for generating the frequency spectrum of said audio signal thereby generating frequency bins of said audio signal; and

    a threshold detector for setting a threshold for each frequency bin using a noise estimation process and for detecting for each frequency bin whether the magnitude of the frequency bin is less than the corresponding threshold, thereby detecting the position of noise elements for each frequency bin.

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