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http://dx.doi.org/10.5370/KIEE.2010.59.5.1001

Nonlinear ANC using a NPVSS-NLMS algorithm and online modelling of an acoustic linear feedback path  

Seo, Jae-Beom (한양대학교 전자컴퓨터통신공학과)
Nam, Sang-Won (한양대학교 융합전자공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.59, no.5, 2010 , pp. 1001-1004 More about this Journal
Abstract
Acoustic feedback and background noise variation can degrade the performance of an active noise control (ANC) system. In this paper, nonlinear ANC using a non-parametric VSS-NLMS (or NPVSS-NLMS) algorithm and online feedback path modeling is proposed, whereby the conventional linear ANC with online acoustic feedback-path modeling is further extended to nonlinear Volterra ANC with a linear acoustic feedback path. In particular, the step-size of the NPVSS-NLMS algorithm is controlled to reduce the effect of background noise variation in the ANC system. Simulation results demonstrate that the proposed approach yields better nonlinear ANC performance compared with the conventional nonlinear ANC method.
Keywords
Acoustic feedback path; adaptive Volterra filter; nonlinear active noise control (ANC);
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