基于DSP的回波抵消器的软件实现  

Software Implementation of Echo Conceller based on DSP

作　　者：李广慧[1,2] 陈兵[2] 

机构地区：[1]太原理工大学,太原030024 [2]北方自动化控制技术研究所,太原030006

出　　处：《电脑开发与应用》2009年第7期46-48,共3页Computer Development & Applications

摘　　要：随着通讯、数字信号处理和大规模集成电路技术的飞速发展,人们对语音通信质量的要求越来越高。回波抵消技术能有效的解决长距离电话网络、IP电话、免提电话和视频会议等通信系统中的回波问题,很好地改善了语音通信质量,具有广阔的市场前景。主要研究用于声音通讯系统中的声回波抵消技术。针对具体应用以及DSP芯片的特点,结合BEPNLMS算法,给出了一种基于TM S320VC 5402 DSP实现回波抵消的软件设计方案。With the rapid development of communication techniques, digital signal processing and VLSI techniques, people demand higher and higher speech quality in communication. Acoustic echo cancellation （AEC） technique It can effectively resolve the echo problems of long-distance telephone network and IP telephone and hands-free telephony and tele-conferencing with satisfactory speech quality. The technology of echo cancellation has been a very active research field in reeent years. This paper in focused on the AEC in communication system. Combining with BEPNLMS and the characteristic of DSP chip, here offers software implementation of the acoustic echo canceller based on TMS320VC5402 DSP.

关 键 词：回波抵消器 DSP BEPNLMS 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]