| 摘要 |
PROBLEM TO BE SOLVED: To provide a performance device, even when a stick is obliquely swung and moves parallel thereto, capable of producing sound at a tone of a position of the stick at an original shot timing.SOLUTION: A CPU 11 estimates a rotary axis direction of a stick part 10 during a performance operation on the basis of an angular velocity, calculates an angular velocity of a tip end of the stick part 10 on the basis of an angular velocity obtained by removing a longitudinal axis component of the stick part 10, calculates a position of a world coordinate system of the stick part 10 after a lapse of a prescribed time on the basis of the estimated latest rotary axis direction and the calculated latest angular velocity of the tip end of the stick part 10, calculates a moving distance on the basis of an acceleration and corrects the position of the world coordinate system of the stick part 10 after a lapse of the prescribed time on the basis of the calculated position and the calculated moving distance. |
