A subband acoustic echo cancellation coupled with double talk detector

摘要：

A subband adaptive algorithm coupled with double talk detector is proposed for acoustic echo cancellation in communication systems. Through frequency decomposition technique and conjugate gradient algorithm, adaptive filters operate in each decimated subband. Coupled with a double talk detector based on an angle measure between two vectors comprising sam ples of input signal to the near-end microphone and the estimated echo at the output of the adaptive filter, the adaptive filter can freeze adaptation during the double talk periods immediately to avoid divergence. The proposed algorithm can ensure convergence with high speed and reduce computational complexity. Simulation results indicate that the algorithm demonstrates good performance for acoustic echo cancellation in communication systems, even with the disturbance of the double talk.

关键词： acoustic echo cancellation subband conjugate gradient algorithm double talk detector

作者: ZHAO Yue LI Nian Qiang ZHONG Tian Yu

作者单位: College of Information Science and Engineering University of Jinan Jinan China Huadian Electric Power Research Institute New Energy Institute Hangzhou China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 232-236

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）