Improved packet loss concealment for PCM VoIP
Q. Li, Maha Mohamed Elsabrouty, Martin Bouchard · Canadian acoustics · 2004
A high-performance concealment algorithm for pulse code modulation (PCM) coded speech was presented. The new concealment technique uses a linear prediction with a large order filter to model the speech. A threshold, based on the fact that voiced speech tends to be more energetic in the residual signal, was determined. It was found by the PESQ-MOS scores that the proposed algorithm exhibits a superior high-quality concealment performance in all cases.