標題: Perceptual-Based Playout Mechanisms for Multi-Stream Voice over IP Networks
作者: Wu, Chun-Feng
Chang, Wen-Whei
Chiang, Yuan-Chuan
電信工程研究所
Institute of Communications Engineering
關鍵字: voice over IP;E-model;playout buffer
公開日期: 1-五月-2011
摘要: Packet loss and delay are the major network impairments for transporting real-time voice over IP networks. In the proposed system, multiple descriptions of the speech are used to take advantage of the packet path diversity. A new objective method is presented for predicting the perceived quality of multi-stream voice transmission. Also proposed is a multi-stream playout buffer algorithm, together with an adaptive parameter adjustment scheme, that maximizes the perceived speech quality via delay-loss trading. Experimental results showed that, compared to FEC-protected single-path transmission, the proposed multi-stream transmission scheme achieves significant reductions in delay and packet loss rates as well as improved speech quality.
URI: http://dx.doi.org/10.1587/transinf.E94.D.1018
http://hdl.handle.net/11536/8888
ISSN: 0916-8532
DOI: 10.1587/transinf.E94.D.1018
期刊: IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS
Volume: E94D
Issue: 5
起始頁: 1018
結束頁: 1025
顯示於類別:期刊論文


文件中的檔案:

  1. 000292619600009.pdf