VoIP中一种基于WebRTC的回声消除改进算法

回声现象是语音通信系统中的常见问题,一直困扰和影响着通信质量。提出一种基于WebRTC(Web Real-Time Communication)开源框架的回声消除算法。该算法针对定点运算框架的局限性,采取浮点算法实现,提高了算法的效率和精度,同时还满足实时性要求。在移动设备上的仿真结果表明,所提算法在复杂度相当的前提下比原有算法有更高的回声返回损耗增益值,具备更好的回声消除性能。

VoIP Acoustic Echo Cancellation Algorithm Based on WebRTC

Echo phenomenon is a common problem in voice communication system,which affects the communication quality.This paper presented an echo cancellation algorithm based on WebRTC (Web Real-Time Communication).As the fixed-point realization is limited,the algorithm uses floating-point computation to improve algorithm efficiency and accuracy,while maintains algorithm speed.The experimental results based on mobile equipments show that the proposed algorithm outperforms the original one on echo return loss enhancement with comparable complexity.