Keyboard instrument for selectively producing mechanical sounds without any mechanical vibrations on music wires

摘要

A keyboard musical instrument for selectively generating acoustic tones and electric tones, comprising: an acoustic piano (1) including a keyboard (1a) having plural keys (1g) selectively depressed for specifying pitches of tones to be produced, plural strings (1d) vibratory for producing said acoustic tones having the pitches different from one another, plural hammers (1c) selectively driven for rotation toward said plural strings (1d), and plural action units (1b) linked between said plural keys (1g) and said plural hammers (1c) so as to give rise to the rotation of the hammers (1c) when said plural keys (1g) are selectively depressed; and a silent system (2/ 3) including a stopper (2c) provided in associated with said plural hammers (1c) and changed between a free position (FP) out of trajectories of said plural hammers (1c) and a blocking position (BP) in said trajectories of said plural hammers (1c) so as to cause said plural hammers (1c) to rebound thereon before striking said plural strings the plural strings (1d), and an electric system (3) for generating electric tones having the pitches identical with the pitches of the acoustic tone to be produced, characterized in that said electric system (3) includes a tone generator (3m/ 3n/ 3o/ 3p/ 3q/ 3u) producing a tone signal based on music data codes representative of said electric tones to be produced and a signal propagation system (3w) connected to said tone generator (3m/3n/ 3o/ 3p/ 3q/3u ) for supplying said music data codes to said tone generator (3m/ 3n/ 3o/3p/ 3q/ 3u ).