TY - GEN
T1 - A packet loss recovery of G.729 speech using discriminative model and N-gram
AU - Nagano, Takeshi
AU - Ito, Akinori
PY - 2013/1/1
Y1 - 2013/1/1
N2 - In a VoIP application, packet losses degrade speech quality. Especially, IP network under a large-scale disaster should cause severe packet losses. We have investigated the relationship between parameter loss and speech quality for G.729 codec. In this paper, we propose packet loss recovery method under severe packet loss condition, where the relationship was modeled by Support Vector Machine (SVM). Compared with the 'repetition' method, the proposed method could improve speech quality. When we used both SVM and N-gram for concealing packet losses, we could obtain further improvement of speech quality.
AB - In a VoIP application, packet losses degrade speech quality. Especially, IP network under a large-scale disaster should cause severe packet losses. We have investigated the relationship between parameter loss and speech quality for G.729 codec. In this paper, we propose packet loss recovery method under severe packet loss condition, where the relationship was modeled by Support Vector Machine (SVM). Compared with the 'repetition' method, the proposed method could improve speech quality. When we used both SVM and N-gram for concealing packet losses, we could obtain further improvement of speech quality.
KW - G.729
KW - N-gram
KW - SVM
KW - packet loss recovery
UR - http://www.scopus.com/inward/record.url?scp=84904460909&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904460909&partnerID=8YFLogxK
U2 - 10.1109/IIH-MSP.2013.75
DO - 10.1109/IIH-MSP.2013.75
M3 - Conference contribution
AN - SCOPUS:84904460909
SN - 9780769551203
T3 - Proceedings - 2013 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2013
SP - 267
EP - 270
BT - Proceedings - 2013 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2013
PB - IEEE Computer Society
T2 - 9th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2013
Y2 - 16 October 2013 through 18 October 2013
ER -