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Decision of double-talk and time-variant echo path for acoustic echo cancellation

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2 Author(s)
Jenq, J.C. ; Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Hsieh, S.F.

A new double-talk detection (DTD) method is proposed for acoustic echo cancellation (AEC) using the iterative maximal-length-correlation (IMLC) algorithm. Based on the assumption of uniformly distributed time-variant echo-path-change, we develop a simplified likelihood ratio test and plot the detection performance by a receiver operating characteristic. Computer simulation shows the proposed DTD method is effective in discriminating double-talk from time-variant echo-path-change.

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Signal Processing Letters, IEEE  (Volume:10 ,  Issue: 11 )