Patent ID: 7514625

Claim:
An electronic keyboard musical instrument comprising: a sound board made of a vibratable plate member; a plurality of key operators; at least one pedal operator; a first performance signal generator for generating a first performance signal based exclusively on an operating state of said plurality of key operators and not based on an operating state of the pedal operator; a second performance signal generator for generating a second performance signal, which is different from the first performance signal, based on operation of said plurality of key operators and operation of the pedal operators; at least one speaker for generating musical tones based on the first performance signal generated by said first performance signal generator; and at least one vibrating device mounted to said sound board for vibrating said sound board based on the second performance signal generated by said second performance signal generator, wherein the first performance signal is for sounding a performance sound according to a pitch of an operated key operator and the second performance signal is for sounding a damper sound corresponding to a resonance sound sounded when a damper pedal is on in an acoustic piano.