基于视频会议系统的回声问题分析  

Analysis of Echo Problems Based on Video Conference System

作　　者：吴成双[1] 李建武[1] 

机构地区：[1]中国电子科技集团公司第三十二研究所,上海200233

出　　处：《电子质量》2011年第5期47-49,共3页Electronics Quality

摘　　要：该文首先介绍了视频会议系统的发展需求,视频会议系统的整体结构以及分类,虽然大多数的视频会议产品都集成了回声消除器,但是由于产生回声的原因很多,所以并不能很好地完全抵消回声信号。该文分析了产生回声的原因,列举了几种常用的回声抵消方法,并对在回声抵消的过程中应该注意的方面进行了分析。In this paper we introduce the development needs of video conferencing systems,the overall structure and its classification.There are many reasons can give rise to echo phenomenon,thought most of video conferencing products with integrated echo canceller,it is difficult to cancel the echo signal completely.So in this article analyzes the cause of echo phenomenon,list several shared methods of echo cancellation,and point out what should be pay attention to in the process of echo cancellation.

关 键 词：视频会议 会议终端 回声抵消器 

分 类 号：TN948.63[电子电信—信号与信息处理]