基于DSP的声回声抵消器的设计  

Design of Acoustic Echo Canceller Based On DSP

作　　者：杨洋[1] 

机构地区：[1]辽宁工业大学信息科学与工程学院,辽宁锦州121001

出　　处：《电子科技》2007年第10期45-48,共4页Electronic Science and Technology

摘　　要：回声抵消器是视频会议系统和电话会议系统中一种必不可少的设备。在讨论回声抵消器原理和算法的基础上,给出了基于DSP的回声抵消器的设计方案。在设计中采用了变步长LMS算法,利用TI公司的DSP TMS320VC5402作为处理单元实现了回声抵消。Acoustic echo canceller is an indispensable ence systems. Based on a discussion of the principles and device in video conference and telephone conferalgorithms of acoustic echo canceller, a design scheme of DSP - based echo canceller is proposed in this paper. NLMS algorithm is adopted and echo canceller is implemented using DSP TMS320C5402 by TI Co. as the disposal unit.

关 键 词：自适应滤波器 LMS算法 变步长 回声抵消 DSP 

分 类 号：TN713.2[电子电信—电路与系统]