Quantization noise estimation for log-PCM

Mohamed Konate, Peter Kabal
2011 2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE)  
ITU-T G.711.1 is a multirate wideband extension for the wellknown ITU-T G.711 pulse code modulation of voice frequencies. The extended system is fully interoperable with the legacy narrowband one. In the case where the legacy G.711 is used to code a speech signal and G.711.1 is used to decode it, quantization noise may be audible. For this situation, the standard proposes an optional postfilter. The application of postfiltering requires an estimation of the quatization noise. In this paper we
more » ... view the process of estimating this coding noise and we propose a better noise estimator.
doi:10.1109/ccece.2011.6030680 dblp:conf/ccece/KonateK11 fatcat:yajq7etjqrflpgdm3f6yndep6i