Method and device for processing signal

Method and device for processing signal

  • CN 106,409,303 A
  • Filed: 04/29/2014
  • Published: 02/15/2017
  • Est. Priority Date: 04/29/2014
  • Status: Active Grant
First Claim
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1. a kind of method of process signal is it is characterised in that include:

  • Select M subband from N number of subband, described N number of subband is the frequency spectrum of the present frame to signalCoefficient division obtains, and the frequency range of described M subband is less than in described N number of subband except described M sonThe frequency range of K subband outside band, N is the positive integer more than 1, M and K is positive integer, MIt is N with K sum;

    Energy response according to described M subband and spectral characteristic, determine former to described M subbandOperation is revised in the execution of beginning envelope value;

    Respectively the original envelope value of described M subband is modified, to obtain described M subbandRevise envelope value;

    Correction envelope value according to described M subband and the original envelope value of described K subband are rightDescribed N number of subband carries out a bit distribution.

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