To the time warped modified transform coding of sound signal

To the time warped modified transform coding of sound signal

  • CN 102,592,602 B
  • Filed: 10/24/2006
  • Issued: 11/25/2015
  • Est. Priority Date: 11/03/2005
  • Status: Active Grant
First Claim
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1. , for a scrambler for the expression of sound signal of deriving, described sound signal has the first frame, follows the second frame after described first frame and follows the 3rd frame after described second frame, and described scrambler comprises:

  • Warp estimator, for estimating the first combination warp information of described first frame and described second frame and the second combination warp information for estimating described second frame and described 3rd frame, described combination warp information describes the Pitch Information of described sound signal;

    Frequency spectrum analyser, uses described first combination warp information to the first spectral coefficient of derive described first frame and described second frame and uses described second combination warp information to the second spectral coefficient of derive described second frame and described 3rd frame;

    Scalable encoder, warp information is combined as input for receiving described first combination warp information and described second, wherein, described scalable encoder is configured to quantize described first combination warp information and described second combination warp information and encode to obtain the coded representation of described first combination warp information and described second combination warp information;

    AndOutput interface, for exporting the coded representation of described first combination warp information and described second combination warp information and comprising the expression of described sound signal of described first spectral coefficient and described second spectral coefficient.

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