Alternative Learning Algorithm for Stereophonic Acoustic Echo Canceller without Pre-Processing

Alternative Learning Algorithm for Stereophonic Acoustic Echo Canceller without Pre-Processing

フォーマット:

論文

責任表示:

Hirano, Akihiro ; Nakayama, Kenji ; Someda, Daisuke ; Tanaka, Masahiko

言語:

英語

出版情報:

2004-08-01

著者名:

掲載情報:

IEICE transactions on fundamentals of electronics, communications and computer sciences

ISSN:

0916-8508

巻:

E87-A

通号:

8

開始ページ:

1958

終了ページ:

1964

バージョン:

publisher

概要:

金沢大学大学院自然科学研究科情報システム<br />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. 続きを見る

URL:

http://hdl.handle.net/2297/5648

タイトル・著者・出版者が同じ資料

詳細

主題:	Pre-processing; Stereophonic acoustic echo canceller
受理日:	2004-08-01

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