A novel adaptation scheme in the NLMS algorithm for echo cancellation

被引：47

作者：

Liu, JF ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs Shanghai, Shanghai 200030, Peoples R China

来源：

IEEE SIGNAL PROCESSING LETTERS | 2001年 / 8卷 / 01期

关键词：

double talk; echo cancellation; echo path change; normalized least mean square (NLMS);

D O I：

10.1109/97.889639

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new normalized least mean square (NLMS) adaptation scheme for echo cancellation. The scheme combines the advantages of the conventional Geigel algorithm with some initiative ideas. The Geigel is used for rough detection of double talk or echo path change within (a) over dot short delay period, while a new control mechanism is proposed for further accurate discrimination of double talk and echo path change and the corresponding real-time updating. Experiments show that stable performance is ensured during abrupt changes. Efficiency as well as effectiveness is increased.

引用

页码：20 / 22

页数：3