利用自适应与同态滤波抵消话音频段数据通信中回波的方法

^ A Method of Gountercting the Eches in the Voice Frequency Band in Data Communication by Making Use of Adaptive and Homomorphic Filters

就话音频段数据通信中利用自适应滤波器和同态滤波器的方法消除回波干扰的基本原理进行了描述，介绍了采用ＤＳＰ技术的滤波器的设计方法，并给出了硬件实现结构。

The paper gives an acoount of the basic principles on which the adaptive andhomomorphic filters are used to counteract the interference of echoes in the voice frequency bandin data communication and makes an introduction to the design of the filter with the DSP tech- nology as well as the hardware structure for its realization.