| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device capable of performing, both automatic playing and haptic control at low cost. <P>SOLUTION: A mass body and a compression spring are set so that the weight in a returning direction to the initial position, which is given to a pedal by both the mass body and the compression spring shown by a dotted line in Fig.2(A) is larger than the performance reaction force to be given to a player by the pedal which is shown by a solid line in Fig.2(A). An actuator unit is set so that a force is applied in the rotating direction to a push out position. A central processor unit (CPU) for controlling the keyboard device generates a force in which the solid line is subtracted from the dotted line, and performance reaction force shown by the solid line is imparted to the player by the pedal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
