About SHIKAKURA JUNJI
About 栗本鐵工所
About INOUE KATSUO
About AMAKAWA KYOICHI
About 野村不動産
About OKAWA SHUICHIRO
About 周音響計測
About OKAWA HEIICHIRO
About 住環境総合研究所
About 日本建築学会技術報告集
About floor impact sound
About sound insulation
About performance
About noise source
About numerical value
About frequency characteristic
About noise level
About sphere
About tire
About interchangeability
About concrete slab
About floor material
About A weighting
About L-value
About ball
About sound insulation performance
About heavy floor impact sound
About impact source
About Floors,ceilings
About Sound-proofing,sound-insulation of buildings
About Propagation of sound waves
About 衝撃源
About 互換性