Provided is a musical instrument including a vibratable body; and a vibrator. The vibrator includes a vibrating body that vibrates in a predetermined direction; and a coupling member coupling the vibrating body and the vibratable body and that transmits vibration of the vibrating body to the vibratable body. The coupling member includes a shaft extending between the vibrating body and the vibratable body; a first wire rod coupling one end portion of the shaft and the vibrating body; and a second wire rod coupling another end portion of the shaft and the vibratable body. A resonance frequency of each of the shaft, the first wire rod, and the second wire rod is at least 10 kHz.

Provided is a musical instrument including a vibratable body; and a vibrator. The vibrator includes a vibrating body that vibrates in a predetermined direction; and a coupling member coupling the vibrating body and the vibratable body and that transmits vibration of the vibrating body to the vibratable body. The coupling member includes a shaft extending between the vibrating body and the vibratable body; a first wire rod coupling one end portion of the shaft and the vibrating body; and a second wire rod coupling another end portion of the shaft and the vibratable body. A resonance frequency of each of the shaft, the first wire rod, and the second wire rod is at least 10 kHz.

Provided is a musical instrument including a vibratable body; and a vibrator. The vibrator includes a vibrating body that vibrates in a predetermined direction; and a coupling member coupling the vibrating body and the vibratable body and that transmits vibration of the vibrating body to the vibratable body. The coupling member includes a shaft extending between the vibrating body and the vibratable body; a first wire rod coupling one end portion of the shaft and the vibrating body; and a second wire rod coupling another end portion of the shaft and the vibratable body. A resonance frequency of each of the shaft, the first wire rod, and the second wire rod is at least 10 kHz.

A long part-mounting structure of a piano, which makes it possible to mount a long part as a component part of a piano to a mounted member without causing warpage of the long part and maintain excellent appearance of the piano even when applied to a transparent piano. This long part-mounting structure is for mounting a keyslip as a component part of the piano to a keybed over the entire longitudinal length of the keyslip. The keyslip has a contact surface in contact with the keybed over the entire longitudinal length of keyslip and a mounting protrusion extending the entire longitudinal length of the keyslip and protruding a predetermined length toward the keybed from the contact surface. The keybed has a contacted surface with which the contact surface of the keyslip is brought into contact and a long groove into which the mounting protrusion is fitted.

A long part-mounting structure of a piano, which makes it possible to mount a long part as a component part of a piano to a mounted member without causing warpage of the long part and maintain excellent appearance of the piano even when applied to a transparent piano. This long part-mounting structure is for mounting a keyslip as a component part of the piano to a keybed over the entire longitudinal length of the keyslip. The keyslip has a contact surface in contact with the keybed over the entire longitudinal length of keyslip and a mounting protrusion extending the entire longitudinal length of the keyslip and protruding a predetermined length toward the keybed from the contact surface. The keybed has a contacted surface with which the contact surface of the keyslip is brought into contact and a long groove into which the mounting protrusion is fitted.

A long part-mounting structure of a piano, which makes it possible to mount a long part as a component part of a piano to a mounted member without causing warpage of the long part and maintain excellent appearance of the piano even when applied to a transparent piano. This long part-mounting structure is for mounting a keyslip as a component part of the piano to a keybed over the entire longitudinal length of the keyslip. The keyslip has a contact surface in contact with the keybed over the entire longitudinal length of keyslip and a mounting protrusion extending the entire longitudinal length of the keyslip and protruding a predetermined length toward the keybed from the contact surface. The keybed has a contacted surface with which the contact surface of the keyslip is brought into contact and a long groove into which the mounting protrusion is fitted.

A long part-mounting structure of a piano, which makes it possible to mount a long part as a component part of a piano to a mounted member without causing warpage of the long part and maintain excellent appearance of the piano even when applied to a transparent piano. This long part-mounting structure is for mounting a keyslip as a component part of the piano to a keybed over the entire longitudinal length of the keyslip. The keyslip has a contact surface in contact with the keybed over the entire longitudinal length of keyslip and a mounting protrusion extending the entire longitudinal length of the keyslip and protruding a predetermined length toward the keybed from the contact surface. The keybed has a contacted surface with which the contact surface of the keyslip is brought into contact and a long groove into which the mounting protrusion is fitted.

An information processing device (2) includes an acquisition unit (22) that acquires detection results of a plurality of sensors (1) that detects skill acquisition operation, and a processing unit (24) that processes the detection results of the plurality of sensors (1) which results are acquired by the acquisition unit (22). The plurality of sensors (1) includes a main sensor (11) that detects a state of a main operation target in the skill acquisition operation, and the processing by the processing unit (24) includes extracting a plurality of pieces of information in the skill acquisition operation on the basis of a detection result of the main sensor (11), calculating feature amounts acquired from the detection results of the plurality of sensors (1) in a generation period of each of the plurality of pieces of extracted information, and generating data (23b) in which the detection results of the plurality of sensors and the calculated feature amounts are organized and described for each of the plurality of pieces of extracted information.

An actuator is used for a piano includes a bridge and strings. The actuator includes: a vibrating body; and an attachment portion configured to attach the vibrating body to the piano, the attachment portion being configured to be sandwiched between the bridge and at least one string, among the strings of the piano.

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).