Abstract
This paper presents a microphone array design which can be used for capturing a sound selectivity and locally at 3-dimensional space. Capturing a sound by microphone array is achieved by method of Delay and Sum Beam Forming (DSBF). In this method, microphone arrangement have a large effect on the directivity. Using beamforming simulation, we have investigated on optimized arrangement of concentrically spherical microphone array which minimizes sidelobes, and improves the basic performance of beamforming. As a result, we have obtained a high directional quality arrangement consisted of truncated icosahedron and regular icosahedron.
