OPERATING CONDITION DETECTING DEVICE FOR PERFORMANCE OPERANT, OPERATING CONDITION DETECTING METHOD FOR PERFORMANCE OPERANT, AND PERFORMING DEVICE HAVING PERFORMANCE OPERANT

摘要

PROBLEM TO BE SOLVED: To detect a plurality of operating conditions of a performance operant with a low-cost constitution. ;SOLUTION: A zone where resistance is low to an operated key 103, is a zone the key travels after its pressing is started till a hammer 111 reaches a cushion material 130, and the cushion material 130 is disposed in a position close to the position where the hammer 111 originally hits a string and detects the key-pressing speed at which the key 103 is pressed. A zone where resistance is high to the operated key 103 is a zone where the hammer 111 presses up the cushion material 130 disposed in the position close to the position where the hammer 111 originally hits a string, and an increased key-pressing pressure is detected acting on the key 103 being operated. In this way, the key-pressing speed is detected based on the positions of the key 103 and on the time it travels between the positions while, by providing a zone where resistance becomes high to the operated key 103, the key-pressing speed is detected based on the position of the key 103 in this zone, and therefore two kinds of operating conditions, the key-pressing speed and key-pressing pressure, are detected by using one analog sensor 142.;COPYRIGHT: (C)2000,JPO