论文部分内容阅读
如何实现全双工的工作方式和如何消除回声，是音频会议电话２个关键技术问题。本文介绍了利用ＤＳＰ技术和分时服务的方法实现二线电话的全双工通话，同时采用自适应数字滤波器（ＡＤＦ）和最小均方法（ＬＭＳ）来消除回声，在二线电话实现音频会议电话的功能。
How to achieve full-duplex work and how to eliminate the echo, is the audio conference call two key technical issues. This article describes the use of DSP technology and time-sharing services to achieve full-duplex two-wire telephone conversation, using both adaptive digital filter (ADF) and the least mean square method (LMS) to eliminate the echo in two-wire telephone audio conference call Features.