ACELP | ADPCM | AMBE | AMR | AMR-NB | CELP | Codebook | DTMF | G.723 | G.726 | G.729 | GSM | Interpolation | LPC | LSF | LSP | MELP | PCM | Perceptual | Pitch | PSOL | QCELP | Quantization | SMV | VAD | Vocoder

Hi Friends, in the g729a recommendation, the excitation is modelled using an "algebraic codebook". what is meant by an "algebraic" codebook ?? also, the postfiltering stage of the decoder uses a tilt compensation filter to compenstate for the spectral tilt of the short-term postfilter. but why does the short-term filter introduce a spectral tilt, when it is only supposed to emphasize the formant frequencies ?? Munish.

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