Title :
A projection-correlation algorithm for acoustic echo cancellation in the presence of double talk
Author :
Creasy, T. ; Aboulnasr, T.
Author_Institution :
Sch. of Inf. Technol. & Eng., Ottawa Univ., Ont., Canada
Abstract :
This paper presents a novel variable-step-size affine projection adaptive algorithm for acoustic echo cancellation. The adaptation rate is controlled by a measure of the correlation between instantaneous and long-term averages of the projection vectors. The proposed algorithm offers excellent robustness against double talk, good initial convergence and tracking ability, and low steady state misadjustment. Simulation results confirming improved performance are provided
Keywords :
acoustic correlation; adaptive filters; echo suppression; telephone sets; acoustic echo cancellation; adaptation rate; double talk; initial convergence; instantaneous average; long-term averages; performance; projection vectors; projection-correlation algorithm; robustness; steady state misadjustment; tracking ability; variable-step-size affine projection adaptive algorithm; Acoustic measurements; Adaptive algorithm; Adaptive filters; Convergence; Echo cancellers; Finite impulse response filter; Microphones; Speech enhancement; Telephony; Variable structure systems;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.862003
