@article{oai:ir.kagoshima-u.ac.jp:00012749, author = {柚木, 謙一 and YUNOKI, Kenichi and 神崎, 重光 and KANZAKI, Shigemitsu and 五十嵐, 寿一 and IGARASHI, Juichi}, journal = {鹿児島大学工学部研究報告, The Research Reports of the Faculty of Engineering, Kagoshima University}, month = {Dec}, note = {Correlation method is applied to measure sound diffraction at circular apertures. At first, the principle of the method is explained in detail for the setup. In theory, two quantities defined by values of the correlation function are presented to indicate characteristics of directivity, transmission-power level and attenuation from the apertures. These characteristics are calculated with normal procedure by the quantities obtained by experimental datas. Comparing the characteristics obtained by the theory of circular piston vibration with these characteristics, the former coincides with the latter almost. In this connection, we discuss on the results and operational methods.}, pages = {69--73}, title = {相関法による音の回折の測定}, volume = {18}, year = {1976} }