A projection-correlation algorithm for acoustic echo cancellation in the presence of double talk

TitleA projection-correlation algorithm for acoustic echo cancellation in the presence of double talk
Publication TypeConference Paper
Year of Publication2000
AuthorsCreasy, T., and T. Aboulnasr
Conference NameAcoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Pagination436 -439 vol.1
Keywordsacoustic correlation, acoustic echo cancellation, adaptation rate, adaptive filters, double talk, echo suppression, initial convergence, instantaneous average, long-term averages, performance, projection vectors, projection-correlation algorithm, robustness, steady state misadjustment, telephone sets, tracking ability, variable-step-size affine projection adaptive algorithm
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

URLhttp://dx.doi.org/10.1109/ICASSP.2000.862003
DOI10.1109/ICASSP.2000.862003

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