高效DSP自适应声回波对消系统的实时实现  

On Real-Time Implementation of an Efficient DSP Adaptive Acoustic Echo-Cancelling System

作　　者：李康辉[1] 何培宇[1] 王永德[1] 夏秀渝[1] 黄强[1] 

机构地区：[1]四川大学电子信息学院,成都610064

出　　处：《四川大学学报（自然科学版）》2004年第5期978-981,共4页Journal of Sichuan University(Natural Science Edition)

摘　　要：报道了自主开发的基于作者提出的一种高效自适应声回波对消算法的DSP实时系统.该系统实时实现扬声器 房间 麦克风(LRM)通道中声回波的自适应对消,且声回波抑制比超过25dB.着重研究了算法的DSP软件实时实现问题,及硬件设计和系统性能的测试.An adaptive acoustic echo-cancelling real-time DSP system has been developed based on an efficient adaptive algorithm that we proposed recently. This real-time system realized the acoustic echo cancellation of a Loudspeaker-Room-Microphone (LRM) channel. More than 25dB RELE has been obtained with good effectiveness. In addition, more research was put on the DSP software real-time implementation of the proposed algorithm, the hardware design and the performance test of the DSP system.

关 键 词：实时实现 回波 DSP 自适应对消 扬声器 麦克风 算法 实时系统 系统性能 软件 

分 类 号：N1[自然科学总论] TN911[电子电信—通信与信息系统]