標題: Perceptual-Based Playout Mechanisms for Multi-Stream Voice over IP Networks
作者: Wu, Chun-Feng
Lee, Cheng-Lung
Chang, Wen-Whei
電信工程研究所
Institute of Communications Engineering
公開日期: 2007
摘要: cPacket loss and delay are two essential problems to real-time voice transmission over best-effort packet 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 playout buffer algorithm improves the delay-loss tradeoff as well as speech reconstruction quality.
URI: http://hdl.handle.net/11536/9656
ISBN: 978-1-60560-316-2
期刊: INTERSPEECH 2007: 8TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION, VOLS 1-4
起始頁: 205
結束頁: 208
顯示於類別:會議論文