Nonlinear adaptive filter-based simplified bilinear model for multichannel active control of nonlinear noise processes

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• 作者：Haiquan Zhao ; Xiangping Zeng ; Zhengyou He ; Tianrui Li ; Weidong Jin
• 关键词：Active noise control ; Adaptive Volterra filter ; Adaptive bilinear filter ; Leaky algorithm ; Filtered-x LMS algorithm
• 刊名：Applied Acoustics
• 出版年：2013
• 出版时间：December, 2013
• 年：2013
• 卷：74
• 期：12
• 页码：1414-1421
• 全文大小：1361 K

文摘

To circumvent nonlinear distortions which occur in multichannel nonlinear active noise control (ANC) systems used for practical applications, a simplified bilinear leaky filtered-x least mean square (SBLFXLMS) algorithm for nonlinear adaptive filter is presented in this paper. The performance of the simplified bilinear adaptive filter is evaluated in terms of computational complexity and convergence characteristics. Computer simulations have been carried out to verify that the nonlinear adaptive filter with the SBLFXLMS algorithm is more effective in eliminating nonlinear distortions in multichannel nonlinear ANC systems than the linear FXLMS, second-order Volterra FXLMS (VFXLMS) and filtered-s LMS (FSLMS) algorithms. Furthermore, the analysis of the computational requirements and simulations results both show that the SBLFXLMS algorithm requires less computations without suffering from any performance degradation of mutichannel nonlinear ANC systems.