Patent ID: 7230178

Claim:
An apparatus for detecting a performance operation amount rendered by a performer, comprising: a grip part that is grasped by the performer and shaped to receive a dynamic pressure caused from grasping by the performer for inputting the performance operation amount; a conversion part that is provided for converting the dynamic pressure applied to the grip part in various directions by the performer into a force acting in a specified direction; and a detection part that is positioned to align a sensitivity thereof with the specified direction for sensing the force generated by the conversion part and outputting a signal indicative of the performance operation amount in response to the sensed force, wherein the grip part has a sleeve shape grasped by the performer to receive the dynamic pressure in radially inward directions of the sleeve shape, and the conversion part has a rod shape, an end portion of which is fitted into the sleeve shape of the grip part, the end portion of the rod shape is cut into a pair of split sections spaced from each other in the specified direction, the split sections being deformable for converting the dynamic pressure applied in the radially inward directions from the grip part into the force acting in the specified direction.