回声消除器中自适应滤波器的研究  

The Study of the Adaptive Filter in the Echo Cancellor

作　　者：范锦宏[1] 赵红怡[1] 

机构地区：[1]北方工业大学电子信息工程学科,北京100041

出　　处：《电子科技》2004年第12期44-46,共3页Electronic Science and Technology

摘　　要：文中介绍了一种用于IP电话的自适应回声消除器,采用NLMS算法自适应滤波器来实现。首先通过MATLAB进行了NLMS算法的步长选择,并用生成的符合G.168要求的带限CSS测试信号对回声消除器的性能进行了测试。The adaptive echo cancellor in IP phone is introduced, which is implemented by NLMS. The choice of step size is made by using MATLAB and the generated bandlimited CSS signal which meets the requirement of G.168 is used to test the performance of the echo cancellor.

关 键 词：NLMS算法 回声消除 自适应滤波器 MATLAB 

分 类 号：TN713[电子电信—电路与系统]