用快速自适应和相关度检测算法的回声抵消器  

Echo canceller based on improved PNLMS and quick correlation DTD algorithms

作　　者：黄本雄[1] 王进军[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2004年第6期4-6,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目 (2 0 0 2AA0 0 10 0 9)

摘　　要：介绍了一种使用快速PNLMS自适应算法和快速相关度检测算法的新回声抵消器算法FPNLMS .快速PNLMS自适应算法通过快速判定自适应滤波器的更新步长方法 ,提高了自适应滤波器的收敛速度并减小计算复杂度 ;快速相关度检测算法能够在低信噪比的情况快速准确地判断出双端通话状态 .测试表明 。An echo cancellation algorithm was introduced based on improved PNLMS and quick correlation Double-Talk Detector (DTD) algorithms. The improved PNLMS algorithm was a quick method to determine each proportionate step-size with faster convergence speed and lower complexity. The quick correlation DTD algorithm gave a new way to compute correlation based on LEAKY method, which can produce more extract detecting result in low SNR situation.

关 键 词：回声抵消器 回声抵消算法 比例归一化最小均方差 双端通话状态检测 

分 类 号：TN912.3[电子电信—通信与信息系统]