Patent ID: 7919708

Claim:
An electronic musical instrument having: a key manipulated by a player; a physical quantity sensor for sensing physical quantity concerning manipulation of the key; a reaction force applying device for applying a reaction force opposing the player's manipulation of the key to the key; an operator manipulated by the player to affect manipulation of the key according to the amount of manipulation of the operator; an operator manipulated amount sensor for sensing the amount of manipulation of the operator; a main reaction force determining portion for determining, by use of a main reaction force table storing main reaction forces which vary according to the physical quantity concerning manipulation of the key, a main reaction force corresponding to the sensed physical quantity concerning manipulation of the key; a first ancillary reaction force determining portion for determining, by use of a first ancillary reaction force table storing first ancillary reaction forces which vary according to the physical quantity concerning manipulation of the key and the amount of manipulation of the operator, a first ancillary reaction force corresponding to the sensed physical quantity concerning manipulation of the key and the sensed amount of manipulation of the operator; and a reaction force controller for adding the determined first ancillary reaction force to the determined main reaction force to calculate a composite reaction force to control the reaction force applying device on the basis of the composite reaction force so that the reaction force opposing the player's manipulation of the key will be the composite reaction force.