基于WebRTC的Android数字楼宇对讲系统回声消除

Study of echo canceller technology of Android digital building intercom system based on WebRTC

针对现在Android数字楼宇对讲系统中的回声消除问题,采用WebRTC的回声消除模块实现Android本地实时回声消除,并设计了多线程编程技术实现音频采集、播放的同步,最后利用JNI技术将Android楼宇对讲系统回声消除程序进行封装,解决了Android楼宇对讲系统的回声问题,达到很好的回声消除效果,便于不同Android平台的移植应用。

To the echo canceller problems of Android Digital Building Intercom System, WebRTC echo cancellation module is utilized for Android local real-time echo cancellation, and multi-threaded programming techniques are designed to achieve synchronization of audio capture and playback.Finally, Android JNI （Java Native Interface） technology is used to package our echo cancellation programs for building intercom system, which solves Android echo problems of building intercom sys- tem, achieves good results for echo cancellation, and is convenient for the application of different Android platforms.