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TRANSITION FROM A TRANSFORM CODING/DECODING TO A PREDICTIVE CODING/DECODING

  • US 20160293173A1
  • Filed: 11/14/2014
  • Published: 10/06/2016
  • Est. Priority Date: 11/15/2013
  • Status: Active Grant
First Claim
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1. A decoding method for decoding a digital audio signal, comprising the following acts performed by a decoding device:

  • receiving the digital audio signal;

    decoding according to an inverse transform decoding of a previous frame of samples of the digital signal, received and coded according to a transform coding;

    decoding according to a predictive decoding of a current frame of samples of the digital signal, received and coded according to a predictive coding, wherein the predictive decoding of the current frame is a transition predictive decoding which does not use any adaptive dictionary arising from the previous frame;

    reinitializing at least one state of the predictive decoding to a predetermined default value; and

    an overlap-add act, which combines a signal segment synthesized by the predictive decoding of the current frame and a signal segment synthesized by inverse transform decoding, corresponding to a stored segment of the decoding of the previous frame.

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