MUSICAL PERFORMANCE RECORDING DEVICE OF KEYBOARD MUSICAL INSTRUMENT AND MUSICAL PERFORMANCE REPRODUCING DEVICE THEREFOR

摘要

PURPOSE: To faithfully record the complicated motion of keys and faithfully reproduce the motion, and to decrease the amount of information in the recording. ;CONSTITUTION: A sensor 36 detects the track of a key and an MPU 43 divides the track into plural sections and applies parabolas corresponding to respective the sections to store on a floppy disk 39 with parameters showing the respective parabolas. The parameters stored on the floppy disk 39 are read in the MPU 43, which then calculates the parabolas from the parameters and controls a driving circuit 46 to outputs a driving signal to a solenoid 35 according to the parabolas, thereby reproducing the key track.;COPYRIGHT: (C)1993,JPO&Japio