Utilizing LiDAR Data for 3D Sound Source Localization

Abstract

This paper introduces a visualization system of 3D sound pressure distribution using a minimum variance distortionless response (MVDR) beamformer with Light Detection and Ranging (LiDAR) technology to estimate the sound source localization. By using LiDAR to capture 3D data, the proposed system calculates the time-averaged output power of the MVDR beamformer at the virtual source position for each point in the point cloud data. The results are then superimposed onto the 3D data to estimate sound sources. The proposed system provides a more visually comprehensible display of the sound pressure distribution in 3D.