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TE-PR-NAKAYAMA-K-1958.pdf617.72 kBAdobe PDF
タイトル: Alternative Learning Algorithm for Stereophonic Acoustic Echo Canceller without Pre-Processing
著者: Hirano, Akihiro link image link image
Nakayama, Kenji link image
Someda, Daisuke
Tanaka, Masahiko
平野, 晃宏
中山, 謙二
発行日: 2004年 8月
雑誌名: IEICE transactions on fundamentals of electronics, communications and computer sciences
ISSN: 0916-8508
巻: E87-A
号: 8
開始ページ: 1958
終了ページ: 1964
キーワード: Pre-processing
Stereophonic acoustic echo canceller
抄録: This paper proposes an alternative learning algorithm for a stereophonic acoustic echo canceller without pre-processing which can identify the correct echo-paths. By dividing the filter coefficients into the former/latter parts and updating them alternatively, conditions both for unique solution and for perfect echo cancellation are satisfied. The learning for each part is switched from one part to the other when that part converges. Convergence analysis clarifies the condition for correct echo-path identification. For fast and stable convergence, a convergence detection and an adaptive step-size are introduced. The modification amount of the filter coefficients determines the convergence state and the step-size. Computer simulations show 10 dB smaller filter coefficient error than those of the conventional algorithms without pre-processing.
URI: http://hdl.handle.net/2297/5648
関連URI: http://www.ieice.org/eng/index.html
資料種別: Journal Article
権利関係: (社)電子情報通信学会の許諾を得て登録
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/5648



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