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PREPROCESSING METHOD, PREPROCESSING APPARATUS AND CODING DEVICE

  • US 20100232540A1
  • Filed: 03/15/2010
  • Published: 09/16/2010
  • Est. Priority Date: 03/13/2009
  • Status: Active Grant
First Claim
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1. A preprocessing method, comprising:

  • obtaining characteristic information of a current frame signal;

    identifying whether the current frame signal requires no coding operation of removing Long Term Correlation (LTC) according to the characteristic information of the current frame signal and preset information; and

    if the current frame signal requires no coding operation of removing LTC, performing a coding operation of removing Short Term Correlation (STC) for the current frame signal;

    if the current frame signal requires the coding operation of removing LTC, performing coding operations of removing both LTC and STC for the current frame signal.

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