基于DSP的回声抵消器的研究与设计

Research and design on acoustic echo canceller based on DSP

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。本文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NLMS算法,利用TI公司的DSP TMS320C5402作为处理单元实现了回声抵消。

Acoustic echo canceller is an indispensable device in the system of video conference and telephone conference.By discussing the principle and algorithms of acoustic echo canceller,a design scheme about echo canceller based on DSP is proposed in this paper.NLMS algorithm is adopted and echo canceller is implemented by using DSP TMS320C5402 of TI Co.as disposal unit.