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A New Variable Threshold and Dynamic Step Size Based Active Noise Control System for Improving Performance

2010/03/07 by P. Babu, Babu, P., A. Krishnan +1
Computer Science · Engineering · #Advanced Adaptive Filtering Techniques #FOS: Computer and information sciences #Other Computer Science (cs.OH) #Sound (cs.SD) #Speech and Audio Processing #Vehicle Noise and Vibration Control #cs.OH #cs.SD

paper · pdf · doi:10.48550/arxiv.1003.1509

Pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS, Vol. 7 No. 2, February 2010, USA. ISSN 1947 5500, http://sites.google.com/site/ijcsis/

arxiv created 2010/03/07 · openalex publication_date 2010/03/07 · arxiv updated 2010/04/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Several approaches have been introduced in literature for active noise control (ANC) systems. Since FxLMS algorithm appears to be the best choice as a controller filter, researchers tend to improve performance of ANC systems by enhancing and modifying this algorithm. In this paper, modification is done in the existing FxLMS algorithm that provides a new structure for improving the tracking performance and convergence rate. The secondary signal y(n) is dynamic thresholded by Wavelet transform to improve tracking. The convergence rate is improved by dynamically varying the step size of the error signal.

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