About SUGAHARA AKIKO
About OKUBO KOHEI
About MIYAKE AKIO
About 東京理大 大学院
About LEE Hyojin
About 東大 生産技研
About SAKAMOTO SHIN'ICHI
About 東大 生産技研
About TAKEOKA SHIGETO
About 日本音響学会研究発表会講演論文集(CD-ROM)
About loudspeaker
About porous medium
About ratio
About building material
About acoustic characteristic
About crystal
About parametric loudspeaker
About phononic crystal
About absorption rate of sound
About porous material
About Sound-proofing,sound-insulation of buildings
About パラメトリックスピーカ
About 多孔質材料
About 斜入射
About 吸音率