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Subject: search.filters.subject.Adaptive echo canceller

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    Adaptive lattice structure filters using variable step-size algorithm for echo cancellation
    (2007-12-01)
    Sukhumalwong, S.
    ;
    Satayarak, N.
    ;
    Benjangkaprasert, C.
    In this paper, we propose a novel variable step-size algorithm for the adaptive lattice form structure filter for the echo canceller in telephone network. By the proposed techniques, it is demonstrated that the proposed algorithm yields the performances over the previous one. Computer simulation results in terms of Echo Return Loss Enhancement (ERLE) are provided to confirm the performances of the proposed algorithm. ©ICROS.
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    Performance comparison of adaptive algorithms for multiple echo cancellation in telephone network
    (2007-12-01)
    Tingchan, W.
    ;
    Benjangkaprasert, C.
    ;
    Sangaroon, O.
    In this paper presents the comparison of the performance of the variable step-size LMS adaptive algorithm and the fixed step-size LMS adaptive algorithm for cancels multiple echoes signal in telephone networks. The core of this paper is a multiple delay estimator, which estimates and distributes delays to each individual fixed length short echo canceller. It is shown that the variable step-size LMS adaptive algorithm yields the performances over the fixed step-size LMS algorithm. Computer simulation results are provided to confirm the performances of the variable step-size LMS algorithm. ©ICROS.