| 摘要 |
PURPOSE:To provide the piano automatic player which faithfully reproduces the strength of key depression of a player. CONSTITUTION:Key depression strength data SD indicating the strength of key depression is converted to key depression strength data SD7 based on a key depression strength data conversion table in a ROM 37 for the purpose of correcting the characteristic error of a plunger. Key depression strength data SD' is corrected by a key depression strength data correction table in the ROM 37 to obtain key depression strength data HSD. By this correction, the difference of force required for driving each key is compensated to obtain a key driving speed corresponding to key depression strength data SD. The force required for driving the key is varied by the position in the arrangement direction of the key, the weight of the key, and the distance between the center of shake of the key and the acting force transmission point of a solenoid to the key. |
