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Unified speech/audio codec (USAC) windows sequence based mode switching

  • US 10,622,001 B2
  • Filed: 05/15/2018
  • Issued: 04/14/2020
  • Est. Priority Date: 11/26/2008
  • Status: Active Grant
First Claim
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1. A signal processing method processed by a processor, comprising:

  • identifying a first window for a previous frame;

    identifying a second window for a current frame;

    modifying a left portion of the second window according to the first window, when a switching occurs between the previous frame and the current frame, andprocessing the current frame by performing overlap-add operation between the previous frame applied to the first window and the current frame applied to the second window having the modified left portion,wherein a slope of the left portion in the second window corresponding to an area for performing overlap-add operation with the first window is modified.

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