@article{oai:muroran-it.repo.nii.ac.jp:00008036, author = {西田, 公至 and NISHIDA, Kohshi and 岩倉, 正雄 and IWAKURA, Masao}, journal = {室蘭工業大学研究報告. 理工編, Memoirs of the Muroran Institute of Technology. Science and engineering}, month = {Nov}, note = {application/pdf, In this paper, a method of measuring acoustic intensity automatically is presented. The method uses measur-ments of the cross spectrum of the pressures at two closely spaced microphones. The acoustic intensity probe used is composed of two microphones which are arranged in parallel and with a short distance slided along those axes, and combined symmetrically with respect to a holder axis. The holder can be turned around its axis by steps of a constant angle for measuring three directional components of an acoustic intensity vector. The acoustic intensity at a field point can be automatically measured by using such composed microphones. A transfer function technique is used for approximately correcting the phase-mismatch error between the instru-mentation of the signal channels of two microphones. This method of measuring acoustic intensity automatical-ly is actually applied to a visualization technque of the flow pattern of sound energy emitted from one aperture of an enclosure with a speaker inside. The experimental results show that the acoustic intensity probe used is an appropriate sensor for the auto-matic measuremend of spatial acoustic intensity vectors.}, pages = {71--79}, title = {3次元音響インテンシティの自動計測用プローブ}, volume = {35}, year = {1985}, yomi = {ニシダ, コウシ and イワクラ, マサオ} }