Codebook Gain Functions

These functions can be used to predict, quantize, decode, and control fixed- and adaptive-codebook gains both in G.729 encoding and decoding procedures.

• DecodeGain_G729
  Decodes the adaptive and fixed-codebook gains.
• GainControl_G729
  Calculates adaptive gain control.
• GainQuant_G729
  Quantizes the codebook gain using a two-stage conjugate-structured codebook.
• AdaptiveCodebookContribution_G729
  Updates target vector for codebook search by subtracting adaptive codebook contribution.
• AdaptiveCodebookGain_G729
  Calculates the gain of the adaptive-codebook vector and the filtered codebook vector.

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