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The subband adaptive filter system has been applied to the acoustic echo cancellation problem in order to overcome the problems of slow convergence due to spectrally dynamic input and high computational costs associated with a single, long adaptive filter. Research into the convergence characteristics of subband acoustic echo cancelers (AECs) have either used Gaussian white noise, USASI noise (as an approximation for speech signals), or short term speech signals. More recently, research in thedoi:10.1109/icassp.1996.543282 dblp:conf/icassp/LeonE96 fatcat:he67nzhbwfexbefurq4zc2i4ja