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Signal processing using pilot based coding

  • US 7,774,199 B2
  • Filed: 10/09/2006
  • Issued: 08/10/2010
  • Est. Priority Date: 10/05/2005
  • Status: Active Grant
First Claim
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1. A method for processing a signal using pilot based coding (PBC), the method comprising:

  • generating, by an audio coding apparatus, one or more pilot difference values using data elements and a pilot reference value;

    entropy-encoding the pilot difference values using a particular entropy table among multiple entropy tables used for decoding the pilot difference values;

    generating entropy table index identifying the particular entropy table;

    obtaining a codeword corresponding to an entropy-encoded entropy table index by entropy-encoding the entropy table index, wherein variable bits are allocated to the codeword based on frequency for use; and

    transferring the codeword and the entropy-encoded pilot difference value,wherein;

    the entropy table index comprises a largest absolute value (LAV) among multiple indexes included in the particular entropy table,a quantity of the pilot difference values is equal to a quantity of the data elements,the pilot reference value is a single value which applies to all of the data elements, andeach pilot difference value corresponds to each data element.

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