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Data organizational scheme for enhanced selection of gain parameters for speech coding

  • US 6,397,178 B1
  • Filed: 09/18/1998
  • Issued: 05/28/2002
  • Est. Priority Date: 09/18/1998
  • Status: Expired due to Term
First Claim
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1. A method of constructing a gain-vector-quantizer table for speech coding of a speech signal, the method comprising the steps of:

  • establishing fixed excitation gain values, gc, for representation of a first component of the speech signal and adaptive excitation gain values, gp, for representation of a second component of the speech signal as entries within the table;

    arranging the established entries in the table such that successive entries of the fixed excitation gain values increase with respect to one another and the adaptive excitation gain values retain their association with corresponding fixed excitation gain values;

    organizing respective groups of the arranged entries into corresponding two-dimensional bins; and

    ordering the entries in each of the bins in increasing order with respect to the adaptive excitation gain values gp within each bin.

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