About TAKADA MASAYUKI
About 九大 大学院芸術工学研究院
About business machine
About impulsive sound
About sound pressure level
About evaluation test
About noise level
About printer
About impact sensitivity
About frequency characteristic
About A-weighted sound pressure level
About numerical value
About パンチ音
About Other noises and vibration
About オフィス
About 衝撃音
About 評価