About YAMAMOTO IO
About OGA JURO
About NEGISHI HIROKAZU
About ミックス音研
About MAEDA KAZUAKI
About TOA
About OISHI KUNIO
About 日本音響学会研究発表会講演論文集(CD-ROM)
About ultrasonic motor
About driving circuit
About modification
About vibrator
About loudspeaker
About frequency characteristic
About ホーンスピーカ
About digitalization
About Audio equipment
About 振動子
About 超音波モータ
About 駆動回路
About デジタル化