Perceptual-based playout mechanisms for multi-stream voice over IP networks

Chun Feng Wu*, Yung Le Chang, Wen-Whei Chang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Packet loss and delay are two essential problems to realtime voice transmission over IP networks. In the proposed system, multiple descriptions of the speech are transmitted to take advantage of largely uncorrelated delay and loss characteristics on different network paths. Adaptive playout scheduling of multiple voice streams is formulated as an optimization problem leading to a better delay-loss tradeoff. Also proposed is a perceptually motivated optimization criterion based on a simplified version of the ITU-T E-model. Experimental results show that the proposed multi-stream playout algorithm improves the delay-loss tradeoff as well as speech reconstruction quality.

Original languageEnglish
Pages (from-to)1087-1091
Number of pages5
JournalEuropean Signal Processing Conference
StatePublished - 1 Dec 2009
Event17th European Signal Processing Conference, EUSIPCO 2009 - Glasgow, United Kingdom
Duration: 24 Aug 200928 Aug 2009

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