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Method for coding an audio signal

  • US 6,424,939 B1
  • Filed: 10/06/1999
  • Issued: 07/23/2002
  • Est. Priority Date: 07/14/1997
  • Status: Expired due to Term
First Claim
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1. A method for coding an audio signal, comprising the following steps:

  • transforming a temporal audio signal to the frequency domain in order to obtain spectral values of the temporal audio signal;

    performing a prediction of the spectral values in relation to frequency in order to obtain spectral residual values;

    detecting noise areas in the spectral residual values;

    noise-substituting the spectral residual values in the noise areas; and

    introducing information concerning the noise areas and the noise-substitution in side information of a coded audio signal.

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