【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。更多还原

【Abstract】 Acoustic echo canceller is an indispensable device in video conference and telephone confer- ence systems.Based on a discussion of the principles and algorithms 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.更多还原