Abstract
The paper describes design optimization method of microphone array using beam forming simulation. Delay and Sum Beam Forming : DSBF is widely used technique to localize and separate sound sources (using microphone array),The performance of DSBF is changes significantly with microphone arrangement, but side lobes are well known problem .We define four indexes to describe directivity of beam forming and evaluation function showing the performance. Then we proposed beam forming simulator with arrangement evaluation function to optimize microphone array design. Finally, 128ch lower side lobes microphone array for mobile robot is automatically determined, and performed over 20dB of S/N ratio.
