KEYBOARD DEVICE OF ELECTRONIC MUSICAL INSTRUMENT, AND ELECTRONIC PIANO

摘要

PROBLEM TO BE SOLVED: To obtain an accurate touch response over the entire keyboard and improve successive key operability. SOLUTION: A jack tail sensor detects a jack tail equivalent member abutting at a 2nd specific position of a keyboard stroke before a let-off and a jack sensor detects the flank 28b of a jack equivalent member 28 abutting at a 1st specific position S1 of the keyboard stroke. The positions S1 and S2 can be arranged at deep stroke positions and the let-off does not affect the detection, so the positions S1 and S2 are stably detected and the time difference is obtained over the entire keyboard. The timing and intensity of sounding are controlled according to the detection data, so a touch response which is similar to that of an acoustic piano and accurately and stable over the entire keyboard is obtained at the time of sounding and even if the stroke becomes narrow at a deep side like successive key depression, accurate detection is enable and no break of sounding is generated.