Journal
CONTROL ENGINEERING PRACTICE
Volume 21, Issue 4, Pages 544-555Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.conengprac.2012.11.007
Keywords
Active noise control; Filtered-S LMS algorithm; Virtual ANC; Nonlinear ANC; Harmonic nonlinearity; Transformer noise
Funding
- Department of Science and Technology, Govt. of India under BOYSCAST Fellowship program
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In this paper, a feed-forward nonlinear active noise control algorithm is developed using the Filtered-S LMS (FSLMS) algorithm and virtual microphone. control for an active headrest application. Virtual microphone control is implemented to attenuate noise at the ears of the headrest occupant using the physical microphones placed at remote locations. The proposed nonlinear virtual microphone control algorithm is verified in real-time in a headrest. Different nonlinear noise processes are studied and it is shown that in all cases, the FSLMS algorithm outperforms the FXLMS algorithm in controlling nonlinear primary noise at a virtual location. (C) 2012 Elsevier Ltd. All rights reserved.
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