A keyboard instrument, in particular a piano, has a keyboard (11) with a multiplicity of keys (12) and also at least two supporting elements (21, 22) for supporting the keyboard (11). A panel-form keybed (10) made of a wood material forms a console, and therefore a rest for the keyboard (11). It is Borne by the at least two supporting elements (21, 22). A groove (33) is provided in the keybed (10). The groove (33) in the keybed (10) is provided parallel to an imaginary connecting line (23) between the two supporting elements (21, 22) and perpendicularly to the keys (12). The groove (33) is arranged on the underside (31) of the keybed (10). A threaded rod (41) is positioned in the groove (33). The keybed (10) can be prestressed by means of the nuts (37, 38) which are arranged in the keybed (10) and surround the threaded rod (41).

The invention is a micro-tuning device for pianos and other keyboard-operated stringed musical instruments. A mass is secured to a single string or choir of strings in the musical instrument by an attachment device between the bridge and the agraffe, nut or V-bar, thereby reducing the speaking length and increasing the pitch of the string.

The invention is a micro-tuning device for pianos and other keyboard-operated stringed musical instruments. A mass is secured to a single string or choir of strings in the musical instrument by an attachment device between the bridge and the agraffe, nut or V-bar, thereby reducing the speaking length and increasing the pitch of the string.

To provide a soundboard speaker of a digital piano that displays more favorable acoustics by devising the arrangement of the vibration unit and ribs. In a soundboard speaker of a digital piano which transmits vibration generated by a vibration unit mounted at one face side of a diaphragm by ribs Ka to Kd mounted at the other face side of the diaphragm so that sound is produced from the whole of the diaphragm, the vibration unit disposed at a position to overlap the rib Kb when the soundboard speaker is viewed head on. The diaphragm in a horizontally long rectangular shape, and the ribs Ka to Kd consisting of prismatic members are disposed on the surface of the diaphragm parallel to each other and in an inclined manner with respect to the vertical direction.

A keyboard instrument, in particular a piano, has a keyboard (11) with a multiplicity of keys (12) and also at least two supporting elements (21, 22) for supporting the keyboard (11). A panel-form keybed (10) made of a wood material forms a console, and therefore a rest for the keyboard (11). It is Borne by the at least two supporting elements (21, 22). A groove (33) is provided in the keybed (10). The groove (33) in the keybed (10) is provided parallel to an imaginary connecting line (23) between the two supporting elements (21, 22) and perpendicularly to the keys (12). The groove (33) is arranged on the underside (31) of the keybed (10). A threaded rod (41) is positioned in the groove (33). The keybed (10) can be prestressed by means of the nuts (37, 38) which are arranged in the keybed (10) and surround the threaded rod (41).

A keyboard instrument, in particular a piano, has a keyboard (11) with a multiplicity of keys (12) and also at least two supporting elements (21, 22) for supporting the keyboard (11). A panel-form keybed (10) made of a wood material forms a console, and therefore a rest for the keyboard (11). It is Borne by the at least two supporting elements (21, 22). A groove (33) is provided in the keybed (10). The groove (33) in the keybed (10) is provided parallel to an imaginary connecting line (23) between the two supporting elements (21, 22) and perpendicularly to the keys (12). The groove (33) is arranged on the underside (31) of the keybed (10). A threaded rod (41) is positioned in the groove (33). The keybed (10) can be prestressed by means of the nuts (37, 38) which are arranged in the keybed (10) and surround the threaded rod (41).

A keyboard instrument includes keys containing a woody material and including natural note keys and accidental note keys. Each natural note key includes a first playing surface played to produce a natural note. Each accidental note key includes a second playing surface played to produce an accidental note. The first playing surface has a first colorimetric value representing a first color, and the second playing surface color has a second colorimetric value representing a second color. Each of the first and second colorimetric values is derived in accordance with an SCI method in an L*a*b* color space. The first and second colorimetric values satisfy at least one of: a first condition: E*ab17, or a second condition: H*<15 and 1.7<L*/c*<1.7. The first and second playing surfaces differ from each other in at least one of optical reflectance or surface roughness.