回声消除在楼宇可视对讲系统中的实现  

Application of Echo Cancellation in Digital Visual Intercom System

作　　者：魏建云[1] 周卫斌[1] 吴勇[1] 孟涛[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2015年第1期51-55,共5页

摘　　要：数字楼宇可视对讲系统是采用网络进行通信的音视频通话系统。由于声音是外放的，所以必然存在声学回声，即说话者能听到自己的声音被传回来了，这将严重影响通话质量。因此需要在系统中增加回声消除模块。我们的可视对讲系统中存在windows和android两种平台，本文提出了在这两种平台上的回声消除的实现。经测试，在这两种平台上的回声消除的实现均获得较好的效果，人耳几乎听不到回声，满足实际应用需要。Digital building visual intercom system is the communication＇s system that uses network for audio and video intercom. There must be acoustic echo because the sound is loud, that is, the speaker can hear his own voice that is transmitted back, which will seriously affect call quality. Hence it＇s necessary to add the echo cancellation module in the system. Windows and android both exist in our video intercom system, so this paper proposes to achieve echo elimination on both platforms. After testing, echo cancellation that proposed on both platforms has received good results, in which the human ear can barely hear the echo, and it meets actual needs.

关 键 词：回声消除 可视对讲 WINDOWS ANDROID 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]