Sound source search system

摘要

It is possible to simultaneously identify the sound coming direction from a sound source in all directions and estimate the sound intensity of the sound source. A plurality of microphones ( 11 ) are arranged on the surface of a baffle ( 10 ) of a shape such as a sphere and polyhedron so that sound from all directions are acquired. A calculation device ( 40 ) calculates the amplitude characteristic and the phase characteristic of acoustic signals acquired by the microphones ( 11 ). The signal information and information on sound field analysis around the baffle are integrated and calculation to emphasize a sound coming from a particular direction is performed for all the directions so as to identify the sound coming direction from a sound source. According to these calculation results and the distance input by an input device ( 70 ), it is possible to estimate the sound intensity of the sound source at a plurality of portions generated at the sound source or boundary surface.