Effect of adaptive howling canceler in active noise control

Shinya Kijimoto, Hiroshi Shimojima

研究成果: ジャーナルへの寄稿記事

抄録

In active noise control, the transfer characteristic of an acoustic feedback path has a considerable influence on the stability of the control system. When the acoustic system has a feedback path, the control system often causes unstable behavior called howling. An adaptive howling canceler designed to prevent thin howling is studied in this paper. This adaptive howling canceler estimates the acoustic feedback path and acts to suppress the howling. In this paper, the effect of this adaptive howling canceler was considered for two different adaptive noise control algorithms. One was the conventional filtered-x LMS (least mean squares) algorithm and the other was the frequency-domain adaptive algorithm proposed by the authors. From computer simulations, it was shown that the howling canceler works effectively with the filtered-x LMS algorithm. On the other hand, the control system became unstable with the frequency-domain adaptive algorithm. To alleviate this unstable behavior, variable output gain was considered. A good result was obtained with this variable gain.

元の言語英語
ページ(範囲)2272-2277
ページ数6
ジャーナルNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
62
発行部数598
DOI
出版物ステータス出版済み - 1 1 1996
外部発表Yes

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Active noise control
Acoustics
Adaptive algorithms
Feedback
Control systems
Acoustic variables control
Computer simulation

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

これを引用

Effect of adaptive howling canceler in active noise control. / Kijimoto, Shinya; Shimojima, Hiroshi.

:: Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 巻 62, 番号 598, 01.01.1996, p. 2272-2277.

研究成果: ジャーナルへの寄稿記事

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