摘要
自适应回波抵消技术是模数模保密机走向实用的关键。详细介绍了如何用TMS320C50实现自适应回波抵消技术。由于使用了本方无话检测和双向通话检测,回波抵消的收敛速度和精度达到了满意的效果。
Adaptive echo cancellation techniques play an importantrole in the application of analog-digital-analog encryption machine. This article introduced how to implement the adaptive echo canceller. We can achieve better performance in convergence rate and precision by using no-word detectionand two-direction-communication detection.
出处
《通信技术》
2001年第7期84-86,共3页
Communications Technology
关键词
模数模保密机
保密通信
回波抵消器
echo canceller, two-four conversion , minimum variation algorithm, two-direction-communication detection
