騒音源信号の白色化機能を有する単一の適応フィルタを用いた高速アクティブノイズコントロールシステム

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2020/03/01

タイトル(英語): Fast Convergence Active Noise Control System Using Single Adaptive Filter with a Whitening Function of Noise Source Signal

著者名: 小林　正樹（中部大学大学院 工学研究科）

著者名(英語): Masaki Kobayashi (Graduate School of Engineering, Chubu University)

キーワード: デジタル制御，情報通信，アクティブノイズコントロール，ノイズ除去，高速適応フィルタ　　digital control，information communication，active noise control，noise rejection，fast convergence adaptive filter

要約(英語): It has been shown that it is possible to construct an ideal ANC system in which the noise source signal is a white signal by applying a dither signal having a power spectrum that is the inverse of the noise source signal. The noise source signal is a random signal that has reached to the microphone via the plural number of long distance acoustic paths. Therefore, the deviation of the frequency characteristic of the power spectrum is considered to be large. The nature of the system that the noise source signal is equivalently replaced by a white signal is extremely significance. The main aim of the paper is to verify the basic principle of this high speed ANC system to the actual noise. A method of generating an external dither signal with a power spectrum that is in reciprocal relation to the power spectrum of the noise source signal is discussed. Also, a practical normalized adaptive algorithm and a range of stable step size are derived. Finally, numerical verifications with actual noise source signal is performed by computer simulation, and the features and effectiveness of the proposed system are summarized.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.3 （2020） 特集Ⅰ：スマートシステムと計測・制御技術―IoT時代の計測・制御技術―　特集Ⅱ：産業応用をにらんだ高周波システム・電子デバイス・回路・材料技術

本誌掲載ページ: 384-390 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/140/3/140_384/_article/-char/ja/