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Fast codebook selection method in audio encoding

  • US 20050075888A1
  • Filed: 09/29/2003
  • Published: 04/07/2005
  • Est. Priority Date: 09/29/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining a largest absolute value (LAV) within a group of data;

    identifying, based on the LAV, a difference table to be used for selecting an optimal Huffman codebook for the group of data, the difference table being associated with two of a plurality of Huffman codebooks;

    calculating one or more indexes for the group of data using an expression associated with the two of the plurality of Huffman codebooks;

    determining a size difference value for the group of data using the one or more indexes and the difference table; and

    selecting one of the two of the plurality of Huffman codebooks based on the determined size difference value.

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