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AssigneeYamaha Corporation
InventorsYasuhiko Oba, Yoshinori Suzuki, Hiroshi Umeji, Masahiro Wada, Satoshi Inoue
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A grand piano is equipped with a sound controller for controlling qualities of a sound to be produced in a sound board and top boards of the grand piano, and the sound controller comprises a parameter switches for providing parameters indicative of qualities of a modified sound, sensors for detecting the qualities of the sound originally produced in the boards, a data processor responsive to the parameters for producing an actuating signal, and actuators associated with the boards for producing additional vibrations therein, wherein the additional vibrations are overlapped with the vibrations originally produced so that composite vibrations with the qualities indicated by the parameters take place in the boards, thereby controlling the acoustic sounds.
A sound controller for controlling qualities of a sound produced in an acoustic musical instrument having a sound generator responsive to a performance of a player for producing an acoustic sound, and vibrative means responsive to said acoustic sound for producing original vibrations corresponding to said acoustic sound, the sound controller comprising:
A sound controller associated with a piano having keys, key action mechanisms respectively linked with said keys, hammers respectively driven by said key action mechanisms, musical wires provided in association with said hammers and producing vibrations upon striking said associated hammers, and at least first, second and third boards vibrative in the presence of said vibrations for producing an acoustic sound indicated by original vibrations increased in magnitude, said controller comprising:
Dependencies are inferred from the claim text.