Keyboard instrument selectively entering into an acoustic mode and a silent mode through a sliding motion of a stopper

摘要

A keyboard instrument selectively enters into an acoustic sound mode for producing piano tones and into an electronic sound mode for producing synthetic tones, and comprises an acoustic piano (100), an electronic sound generating system (200) and a mode controlling system (300), wherein the mode controlling system has a stopper slidable along strings (150) of the acoustic piano so that the strings are struck by or blocked from hammers (145) of the acoustic depending upon the position of the stopper. IMAGE