Fast Time-Domain Spherical Microphone Array Beamforming

TitleFast Time-Domain Spherical Microphone Array Beamforming
Publication TypeConference Papers
Year of Publication2007
AuthorsLi Z, Duraiswami R
Conference NameApplications of Signal Processing to Audio and Acoustics, 2007 IEEE Workshop on
Date Published2007/10//

Capturing and reproducing 3D audio has several applications. Spherical array based beamforming is an important technique in this field. However, such a beamformer is very expensive to implement, especially for interactive applications. In this paper, we propose a fast spherical beamforming algorithm in the time domain. It uses pre-computed data and can be steered to arbitrary 3D directions. It is ideal for interactive audio applications such as 3D games, etc. Simulation and experimental results are demonstrated to verify our algorithm.