直方体エンクロージャ側面の円孔からの漏えい音による回折音場

概要

論文の詳細を見る
The diffraction sound field by a circular aperture in the surface of a rectangular enclosure containing a sound source inside is investigated theoretically and experimentally to examine the applicability of Pierce's approximate solution of diffraction sound for a three-sided semi-infinite barrier to finite three dimentional bodies and to grasp actually the properties of the diffraction sound field around the enclosure is computed by applying Pierce's approximate solution and actually measured with the sound visualizing device built as a trial, which consists of the electronic circuit system to switch three colored light emitting diodes attached to a microphone according to the magnitude of the sound pressure level, the microphone scanning device and a photograhing set. The computed results agree fairly well with the visualized ones.
一般社団法人日本機械学会の論文
1984-09-25