A Nonlinear Regression Analysis Method for Frame Erasure Concealment in VoIP Networks
Seung-Ho Choi, Hosang Sung · The Journal of the Institute of Webcasting, Internet and Telecommunication · 2009
Frame erasure is one of the most difficult problems in voice over IP (VoIP) networks and is a major source of speech quality degradation. In this paper, a frame erasure concealment algorithm based on nonlinear regression analysis is presented to minimize speech quality deterioration in code-excited linear prediction (CELP) based coders. We applied the proposed scheme to the ITU-T G.729 standard and obtained improved perceptual evaluation of speech quality (PESQ) scores compared to the conventional methods.