| 摘要 |
PURPOSE:To easily perform rotating operation by the hand as to the musical sound controller of an electric musical instrument. CONSTITUTION:A turntable 22 which is provided on an electronic musical instrument main body rotatably on a vertical shaft part with a screw hole and rotated horizontally by hand operation on the top surface and a control signal detecting means which detects the start of the rotating operation of this turntable 22 and outputs a musical sound control signal in response, and this control signal detecting means is composed of a movable contact provided on the reverse surface of the turntable 22 and a 1st and a 2nd fixed contact provided on a circuit board 44 below the movable contact. |
