About HARADA KAZUNORI
About KAWAI KEIJI
About NAKAMURA TETSUO
About 熊本環境革新支援セ
About 日本騒音制御工学会研究発表会講演論文集
About Wood
About Kumamoto prefecture
About sound absorbing material
About acoustic wave absorption
About perforated plate
About acoustic resonator
About characteristic
About plywood
About conifer
About interior finishing material
About sound absorbing characteristics
About internal finishing material
About Helmholtz resonator
About 熊本県産木材
About Walls
About Propagation of sound waves
About 熊本
About 木材
About 吸音
About 有孔板
About 活用