| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic field plane wave spreading technology capable of spreading a plane wave even if a microphone array is cylindrical.SOLUTION: A spread angle storage section 2 stores a discretization angle (&thetas;,&phgr;)(d=1, ..., D) with D as a predetermined positive integer and a plane wave spread section 3 uses a sound pressure signal P(k) generated on the basis of signals collected by a microphone to compute a plane wave spread signal P(k) corresponding to each discretization angle (&thetas;,&phgr;) read from the spread angle storage section while considering a change of a transfer route caused by baffling a rigid body. |
