【摘要】 <正> 1 简介随着IP组播技术日趋成熟和Mbone的逐渐普及,通过普通的Internet而不是专用线路进行交互式的音频/视频会议已经成为可能。IP组播技术不同于传统的单播技术,它大大削弱了会议的参与者之间的联系,这就使其具有很好的可扩展性,可以很好地支持上千人参与的大型交互会议。但是,由于在IP组播中更多还原

【Abstract】 With the development of IP multicast and the Internet multimedia backbone,it is possible to set up a interactive audio/video conference through Internet but appropriative link. Due to the poor tolerance of human being to audio quality, audio quality has become the most emergent problem to be solved in interactive conference applications. In this paper,we discuss how to measure the quality of audio and survey a number of packet-loss recovery techniques for streaming audio.更多还原