Frequency Domain Adaptive Algorithms for Stereophonic Acoustic Echo Cancellation Employing Tap Selection
نویسندگان
چکیده
The use of a tap-selection approach for stereophonic acoustic echo cancellation in frequency domain adaptive algorithms is investigated. We first provide an analysis showing how the exclusive-maximum (XM) tap-selection scheme can improve the conditioning of the covariance matrix, hence improving convergence performance. We then show how the XM tap-selection can be extended to the frequency domain adaptive structure by considering the frequency least-mean-square (FLMS) algorithm which employs a 50% input overlap. We also consider the case of XM tap-selection under any arbitrary overlapping factor. Simulation results show approximately 3-6 dB improvement in convergence compared to existing frequency domain adaptive algorithms.
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