Patent ID: 8445769

Claim:
A performance apparatus used with musical tone generating equipment, the apparatus comprising: a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand; an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value; an angular rate sensor provided held within the holding member, for detecting an angular rate sensor value of rotation of the holding member about an axis in the longitudinal direction of the holding member; and a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving the musical tone generating equipment an instruction of generating a musical tone, wherein the controlling unit comprises: a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit; a first rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on a variation of the angular rate sensor value during a period from a starting time when the player starts swinging down motion of the holding member to a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the first rotation angle calculating unit and for giving the calculated sound volume level of a musical tone to the sound-generation instructing unit.