Automatic player piano equipped with monitoring system on key action for improving fidelity of reproduced music

摘要

A controller module associated with a mechanical piano memorizes a plurality sets of parameters produced from detected trajectories of depressed keys in a floppy disk in a recording mode of operation, and restores the trajectories on the basis of the sets of parameters for driving an actuator array associated with a keyboard in a playback mode, thereby exactly reproducing a music without sacrifice of the memory capacity.