Perceptual Pre-weighting and Post-inverse weighting for Speech Coding

  title={Perceptual Pre-weighting and Post-inverse weighting for Speech Coding},
  author={N. Shetty and J. Gibson},
  journal={2007 Conference Record of the Forty-First Asilomar Conference on Signals, Systems and Computers},
We investigate the effect on voice quality of perceptual pre-weighting of the input speech to a codec, and post- inverse weighting the output of the codec. The G.726 adaptive differential pulse code modulation (ADPCM) codec and the AMR narrowband (AMR-NB) code excited linear prediction (CELP) codec are employed in our experiments. The weighting function used has the same form as that of the perceptual weighting function for the analysis-by-synthesis codebook search in AMR- NB. We observe a… CONTINUE READING