Gain-smoothing in wideband speech and audio signal decoder

Gain-smoothing in wideband speech and audio signal decoder

CN
  • CN 1,391,689 A
  • Filed: 11/17/2000
  • Published: 01/15/2003
  • Est. Priority Date: 11/18/1999
  • Status: Abandoned Application
First Claim
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1. produce the method for the code vector of a gain-smoothing in the decode procedure of the broadband signal of encoding from one group of wideband signal coding parameter, described method comprises:

  • Find out with described group in a code vector of at least one first wideband signal coding relating to parameters;

    Calculate the factor I of representing sounding in the broadband signal, to respond at least one the second wideband signal coding parameter in described group;

    Calculate the factor of the described broadband signal stability of representative, to respond at least one the 3rd wideband signal coding parameter in described group;

    Calculate the level and smooth gain factor-related with described first and second;

    AndUse described level and smooth gain to amplify the code vector that is found, thereby produce the code vector of described gain-smoothing.

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