Title :
Decision of double-talk and time-variant echo path for acoustic echo cancellation
Author :
Jenq, J.C. ; Hsieh, S.F.
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
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.
Keywords :
acoustic correlation; acoustic signal detection; echo suppression; iterative methods; sensitivity analysis; speech processing; AEC; acoustic echo cancellation; double-talk detection; hands-free conversation; iterative maximal-length-correlation algorithm; likelihood ratio test; receiver operating characteristic; speech processing; time-variant echo path; Acoustic signal detection; Adaptive filters; Computer simulation; Degradation; Iterative methods; Loudspeakers; Microphones; Multilevel systems; Speech; Testing;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.817169
