SOUND SOURCE SEARCH METHOD, SOUND SOURCE SEARCH DEVICE, AND SOUND SOURCE SEARCH PROGRAM

摘要

PROBLEM TO BE SOLVED: To enhance a resolution compared with that in the conventional delay summation method, as to a sound source search method or the like for specifying a source position.;SOLUTION: Time-serial data in a plurality of generated channels are acquired by picking up sounds emitted from a sound source existing on an x-y plane of Z=Z_S by a plurality of microphones arrayed on an x-y plane of Z=Z_H, a spectrum of multichannel desired angular frequency ω is generated by discrete-Fourier-transforming the acquired multichannel time-serial data in every channel, a matrix element is calculated based on the generated spectrum of multichannel desired angular frequency ω, and a simultaneous equations are calculated substituted with the calculated matrix element.;COPYRIGHT: (C)2009,JPO&INPIT