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Quantization and inverse quantization for audio

  • US 8,069,052 B2
  • Filed: 08/03/2010
  • Issued: 11/29/2011
  • Est. Priority Date: 09/04/2002
  • Status: Expired due to Term
First Claim
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1. In a computing device that implements an audio decoder, a computer-implemented method comprising:

  • receiving, at the computing device that implements the audio decoder, encoded audio information, the encoded audio information including information for plural quantization matrices;

    decompressing, at the computing device that implements the audio decoder, at least one of the plural quantization matrices using temporal prediction; and

    with the computing device that implements the audio decoder, decoding the encoded audio information, including applying the plural quantization matrices in inverse quantization, wherein the resolution of the plural quantization matrices varies during the decoding.

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