Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:G6
Session:
Number:G6-1
A Packet Loss Concealment Algorithm Robust to Burst Packet Loss for CELP-type Speech Coders
Choong Sang Cho, Nam In Park, Hong Kook Kim,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
In this paper, we proposed a packet loss concealment algo-rithm for a CELP-type speech coder that reduces the degra-dation of speech quality due to packet loss. The proposed PLC consists of a voicing probability, a periodic/random excitation generation, and speech amplitude control. We evaluated the performance of the proposed algorithm on G.729 under random and burst packet loss rates of 3% and 5% and compare it with PLC employed in G.729. From the PESQ measure, an A-B preference tests and a waveform comparison, it was shown that the proposed PLC algorithm provided better speech quality than the PLC employed in G.279 under packet loss rates of 3% and 5%.