Patent ID: 7750231
Filing Date: 2010-07-06
Classification: G10H

Abstract:
1. A keyboard apparatus of an electronic musical instrument comprising: a keyboard containing a plurality of keys having a reaction force mechanism for exerting a reaction force at each key-depression; a key-depression detecting portion for detecting a depressed key position and a key-depression velocity on the basis of a key-depression on the keyboard; and a velocity generating portion for generating a velocity in accordance with a specified velocity generation rule on the basis of the depressed key position and the key-depression velocity detected by the key-depression detecting portion, the velocity generation rule including: a velocity response rule for providing a small velocity for a key-depression having a small key-depression velocity, and providing a large velocity for a key-depression having a large key-depression velocity if positions of the depressed keys are identical; and a touch response correction rule for providing a large velocity for a key exerting an excessive reaction force at a key-depression, and providing a small velocity for a key exerting an insufficient reaction force at a key-depression if the keys are depressed with an identical velocity.