A directional spatial active noise control system with a sound field separation algorithm

Abstract

Spatial active noise control (ANC) systems aim to control noise fields within the entire region of interest. However, current spatial ANC systems commonly lack the spatial selectivity to target a specific noise field from the whole noise fields, which cannot satisfy user requirements in some cases. This paper designs a directional spatial ANC system to control noise fields selectively based on the direction of arrival (DOA). The key idea is to introduce a DOA-informed sound field separation (SFS) algorithm to design the directional spatial ANC system. In detail, the directional spatial ANC system is designed to control noise fields selectively, with the ability to select the target sound field introduced by the SFS algorithm. Simulation results demonstrate that the designed directional spatial ANC system can control noise fields selectively within the region of interest in a noisy environment.