Three-dimensional intensity probe, three-dimensional sound source direction detection device and three-dimensional sound source direction facing control device using the probe

摘要

PROBLEM TO BE SOLVED: To provide a three-dimensional intensity probe by which sound waves from respective directions in a three-dimensional space are separated easily and which is of high detection accuracy.;SOLUTION: A center microphone 11 and a first peripheral microphone 12 to a third peripheral microphone 14 which are respectively nondirectional are provided. The first to third peripheral microphones 12 to 14 are arranged and constituted so as to draw a right-angled triangular pyramid in which the faces of right-angled congruent isosceles triangles form three faces excluding the base when the sound-wave incident-face centers 15, 21, 22, 23 of the microphones 11 to 14 are connected.;COPYRIGHT: (C)2004,JPO