Nonlinear active noise control for headrest using virtual microphone control
نویسندگان
چکیده
1 Nonlinear active noise control for headrest using virtual microphone control Debi Prasad Das, Danielle J. Moreau, Ben S. Cazzolato School of Mechanical Engineering, The University of Adelaide SA 5005, AUSTRALIA *Process Engineering and Instrumentation Cell, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, India [email protected], [email protected] [email protected] [email protected] Abstract: 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.
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