Global active noise control based on wavefront synthesis

Abstract

In this paper, we propose ta method to reduce noise globally in a certain area based on wavefront synthesis. In this method, multi-channel active noise control is used that is divided into two parts. One sub-system is to reproduce the same shape of wavefront of the noise into the target area. The other is to adjust the amplitude and phase of reproduced wavefront to be the anti-noise with Filtered-x LMS algorithm. The effectiveness of the proposed approach is verified by numerical simulation and experiment.