A new structure for feedforward active noise control systems with improved online secondary path modeling

作     者：Akhtar, MT Abe, M Kawamata, M 

作者机构：Tohoku Univ Grad Sch Engn Dept Elect Engn Sendai Miyagi 9808579 Japan 

出 版 物：《IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING》 (IEEE Trans Speech Audio Process)

年 卷 期：2005年第13卷第5期

页      面：1082-1088页

核心收录：

主　　题：active noise control averaging FxLMS algorithm online secondary path modeling 

摘      要：This paper proposes a new structure for feedforward active noise control (ANC) systems with online secondary path modeling. The proposed method: 1) uses the same error signal for updating the noise control process as used for the secondary path modeling process and 2) incorporates an adaptive filtering with averaging based filtered-reference algorithm in the noise control process. The computer simulations have been conducted with both narrowband and broadband noise signals. It is shown that in the proposed ANC system the residual noise signal and the secondary-path-modeling error can be reduced at a faster convergence rate than the existing methods. This improved performance is achieved at the expense of a slightly increased computational complexity.