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A Variable Step-Size FXLMS Algorithm for Narrowband Active Noise Control

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4 Author(s)
Boyan Huang ; Harbin Inst. of Technol. (HIT), Harbin, China ; Yegui Xiao ; Jinwei Sun ; Guo Wei

In this paper, a variable step-size filtered-x LMS (VSS-FXLMS) algorithm is proposed for a typical narrowband active noise control system. The new algorithm converges much faster than the conventional FXLMS algorithm does, and indicates a convergence rate quite similar to that of the filtered-x recursive least square (FXRLS) algorithm in stationary noise environments. It also considerably outperforms these two existing algorithms in nonstationary situations. The proposed algorithm requires some more computations as compared with the FXLMS algorithm; however, its computational complexity is significantly less than that of the FXRLS algorithm. Numerous simulations for stationary and nonstationary scenarios are conducted to demonstrate the superior performance of the proposed VSS-FXLMS algorithm as compared with the FXLMS and the FXRLS algorithms.

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Audio, Speech, and Language Processing, IEEE Transactions on  (Volume:21 ,  Issue: 2 )