论文部分内容阅读
消回声处理是可视电话系统的一个问题，该文分析了基于ＰＳＴＮ的可视电话系统中声音传输产生的回声的特点，讨论了回声控制的方法及其关键技术。
Echo processing is a problem of videophone system. This paper analyzes the characteristics of echoes generated by audio transmission in videophone systems based on PSTN, and discusses the methods of echo control and its key technologies.