標題: Joint playout and FEC control for multi-stream voice over IP networks
作者: Wu, Chun-Feng
Chiang, Yuan-Chuan
Chang, Wen-Whei
傳播研究所
Institute of Communication Studies
關鍵字: playout buffer;forward error control;multiple description coding;voice quality prediction model
公開日期: 2013
摘要: Packet loss and delay are the major network impairments for transporting real-time voice over internet protocol (IP) networks. In the proposed system, multiple descriptions of the speech are used to take advantage of packet path diversity. A new objective method is presented for predicting the perceived quality of multi-stream voice transmission. Also proposed is a joint playout buffer and forward error control (FEC) adjustment scheme that maximizes the perceived speech quality via delay-loss trading. Experimental results showed that the proposed multi-stream voice transmission scheme achieves significant reductions in delay-and packet-loss rates as well as improved speech quality.
URI: http://hdl.handle.net/11536/21276
http://dx.doi.org/10.1080/02533839.2012.726334
ISSN: 0253-3839
DOI: 10.1080/02533839.2012.726334
期刊: JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
Volume: 36
Issue: 2
起始頁: 224
結束頁: 235
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