An Improved Multiple Sound Source Localization Method Using a Uniform Concentric Circular Microphone Array

Sound source localization finds its applications in various scenarios, such as video conferences, human-robot interaction, intelligent robotics, transportation, fault detection and medical treatment. To overcome the conflict of low frequency resolution issue for the microphone array with small aperture and spatial aliasing issue caused by the microphone array with large aperture, this paper adopts a uniform concentric circular array topology and proposes an improved method based on delay and sum beamforming algorithm to realize the multiple sound sources localization. Experimental results illustrate the effectiveness of the proposed algorithm.