An new algorithm for acoustic echo cancellation with duplex talk protection
具有双方对讲保护的自适应回波消除新算法

The paper presents a new NLMS-like algorithm,which can protect the adaptive filter performance during duplex talk in acoustic echo cancellation of teleconference without setting a detector.Because the variety of the correlation of the far-end signal and near-end received signal can judge the duplex talk occurring or echo path changing,the correlation coefficient is directly used in the iteration formula to control the iteration speed of the filter.Simulation results indicates that the new algorithm has the good duplex talk protection performance and also has the fast tracking performance as the echo path changes but with less computational complexity contrast to the congener algorithm.