| 摘要 |
PROBLEM TO BE SOLVED: To provide a dummy hammer of an electronic piano which gives a touch feeling very close to that of an acoustic piano and can precisely be manufactured at a low cost. SOLUTION: This hammer 12 is a dummy hammer of an electronic piano which has a hammer head 14 and rotates on a fulcrum 12a of rotation to perform dummy string hitting operation with the hammer head 14, and has the same weight and gravity center Gh1 with a hammer 32 of an acoustic piano. Moment of inertia regarding the fulcrum 12a of rotation is set equal to moment of inertia regarding the fulcrum 32a of rotation of the hammer 32 of the acoustic piano. |
