Linear Prediction Analysis Functions

Functions described in this section implement LSP coding (quantization) and decoding, as well as transformation between LPC, LSP and LSF coefficients.

• AutoCorr_G729
  Estimates the autocorrelation of a vector.
• LevinsonDurbin_G729
  Calculates LP coefficients from the autocorrelation coefficients.
• LPCToLSP_G729
  Converts LP coefficients to LSP coefficients.
• LSFToLSP_G729
  Converts Line Spectral Frequencies to LSP coefficients.
• LSFQuant_G729
  Performs quantization of LSF coefficients.
• LSFDecode_G729
  Decodes quantized LSFs.
• LSFDecodeErased_G729
  Reconstructs quantized LSFs in case when a frame is erased.
• LSPToLPC_G729
  Converts LSP coefficients to LP coefficients.
• LSPQuant_G729
  Quantizes the LSP coefficients.
• LSPToLSF_G729
  Converts LSP coefficients to LSF coefficients.
• LagWindow_G729
  Applies 60Hz bandwidth expansion.

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