Title :
Expanded CLMS algorithm for double-talk echo cancelling
Author :
Asharif, Mohammad R. ; Shimabukuro, Atsushi ; Hayashi, Takahiro ; Yamashita, Katsumi
Author_Institution :
Dept. of Inf. Eng., Ryukyus Univ., Okinawa, Japan
Abstract :
The correlation LMS (CLMS) algorithm has been proposed to solve the double-talk problem in echo cancelling for a teleconference system. This algorithm has the unique characteristic that it uses a correlation function of the input signals instead of the input signals itself. But this algorithm does not have a sufficient performance yet. Therefore, we propose an expanded CLMS algorithm in which the MSE is obtained for the sum of lagged squared errors. The proposed algorithm obtains a better performance than the CLMS algorithm in the double-talk situation
Keywords :
correlation methods; echo suppression; least mean squares methods; teleconferencing; correlation function; correlation least mean squares algorithm; double-talk echo cancelling; expanded CLMS algorithm; lagged squared errors; teleconference system; Adaptive algorithm; Convergence; Degradation; Echo cancellers; Feedback; Finite impulse response filter; Least squares approximation; Loudspeakers; Microphones; Signal processing;
Conference_Titel :
Systems, Man, and Cybernetics, 1999. IEEE SMC '99 Conference Proceedings. 1999 IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5731-0
DOI :
10.1109/ICSMC.1999.814229
