Piano pedal operating device for people with disabilities, which allows for said operation by pressure exerted by the back of a user, wherein said piano comprises a first, vertical axis that may move longitudinally operated by means of the right pedal; a second, transverse axis joined to the first axis; strings operated by means of keys, designed to produce sounds; and dampers operated by the second axis, designed to prolong or extinguish the sounds produced by the strings. The device comprises a magnet attached to the first axis; an electro-permanent suction cup placed above the magnet, which it attracts in order to move the dampers away from the strings; a cable that conducts an electric current to the electro-permanent suction cup, in order to annul its attraction over the magnet, and thus bring the dampers closer to the piano strings; and a switch designed to cut the current flow.

A pressing surface of a hammer and a to-be-pressed surface of a key switch have relatively-concaved shapes in a longitudinal direction of the hammer. When a switch body is pressed by the hammer, an inclination caused by an overall curvature of the switch body that results from the fact that the switch body is pressed by the hammer from an oblique direction is canceled by an inclination of the switch body caused by partial compression and deformation that results from the relatively-concaved shapes, so that movable contacts in the switch body frontally face stationary contacts and come into contact with the stationary contacts, respectively.

The object of the invention is a device and a method for damping of aliquot tones, which solve the technical problem of the damping of aliquot tones in instruments that have a large number of strings (6) mounted between two fastening points (7) of the string, wherein a musician does not touch the strings (6) with his fingers or with a hand-held accessory. Such instruments are for instance the piano and the upright piano. The invention is technically configured in a way that the string (6) proximal to one of both fastening points (7) of the string, via the actuator (4), is pressed with the pressing material (2) which is preferably an elastic material, wherein the pressing of the pressing material (2) causes the damping of aliquot tones. The device (1) for damping of aliquot tones comprises at least the pressing material (2), with which the pressure against the strings (6) is carried out by way of the pressing element (8), the movable element (3) which causes a pressing force, and the actuator (4) linked to the linkage (5), with which the pressure against the strings (6) is actuated, thus dampening the aliquot tones.

The object of the invention is a device and a method for damping of aliquot tones, which solve the technical problem of the damping of aliquot tones in instruments that have a large number of strings (6) mounted between two fastening points (7) of the string, wherein a musician does not touch the strings (6) with his fingers or with a hand-held accessory. Such instruments are for instance the piano and the upright piano. The invention is technically configured in a way that the string (6) proximal to one of both fastening points (7) of the string, via the actuator (4), is pressed with the pressing material (2) which is preferably an elastic material, wherein the pressing of the pressing material (2) causes the damping of aliquot tones. The device (1) for damping of aliquot tones comprises at least the pressing material (2), with which the pressure against the strings (6) is carried out by way of the pressing element (8), the movable element (3) which causes a pressing force, and the actuator (4) linked to the linkage (5), with which the pressure against the strings (6) is actuated, thus dampening the aliquot tones.

A vibrator includes: a movable portion connected to a vibratable member; a driver configured to drive the movable portion to cause vibration of the movable portion to vibrate the vibratable member; and a driver supporter secured to a support member and configured to support the driver such that the driver is pivotable about an axis extending in a direction intersecting a movable direction of the movable portion.

A vibrator includes: a movable portion connected to a vibratable member; a driver configured to drive the movable portion to cause vibration of the movable portion to vibrate the vibratable member; and a driver supporter secured to a support member and configured to support the driver such that the driver is pivotable about an axis extending in a direction intersecting a movable direction of the movable portion.

The object of the invention is a device and a method for damping of aliquot tones, which solve the technical problem of the damping of aliquot tones in instruments that have a large number of strings (6) mounted between two fastening points (7) of the string, wherein a musician does not touch the strings (6) with his fingers or with a hand-held accessory. Such instruments are for instance the piano and the upright piano. The invention is technically configured in a way that the string (6) proximal to one of both fastening points (7) of the string, via the actuator (4), is pressed with the pressing material (2) which is preferably an elastic material, wherein the pressing of the pressing material (2) causes the damping of aliquot tones. The device (1) for damping of aliquot tones comprises at least the pressing material (2), with which the pressure against the strings (6) is carried out by way of the pressing element (8), the movable element (3) which causes a pressing force, and the actuator (4) linked to the linkage (5), with which the pressure against the strings (6) is actuated, thus dampening the aliquot tones.

The object of the invention is a device and a method for damping of aliquot tones, which solve the technical problem of the damping of aliquot tones in instruments that have a large number of strings (6) mounted between two fastening points (7) of the string, wherein a musician does not touch the strings (6) with his fingers or with a hand-held accessory. Such instruments are for instance the piano and the upright piano. The invention is technically configured in a way that the string (6) proximal to one of both fastening points (7) of the string, via the actuator (4), is pressed with the pressing material (2) which is preferably an elastic material, wherein the pressing of the pressing material (2) causes the damping of aliquot tones. The device (1) for damping of aliquot tones comprises at least the pressing material (2), with which the pressure against the strings (6) is carried out by way of the pressing element (8), the movable element (3) which causes a pressing force, and the actuator (4) linked to the linkage (5), with which the pressure against the strings (6) is actuated, thus dampening the aliquot tones.

Aspects of the disclosure provide for mechanisms for providing muting functions for a piano system. In some embodiments, a piano system according to the disclosure includes a plurality of linkage structures coupled to a plurality of keys, a plurality of strings corresponding to the plurality of linkage structures, and a muting unit configured to place at least one elastic structure at a first position to implement a first mode for the piano system. In some embodiments, the first position is located between the linkage structures and the strings. In the first mode, the elastic structure may be placed at the first position to prevent an interaction between at least one of the linkage structures and the strings when one of the plurality of keys is depressed.

The present disclosure relates to a method and system for calibrating a musical device. In some embodiments, a method for calibrating a musical device includes: energizing an actuator to actuate a key using a force corresponding to a first intensity level; obtaining, from a sensor, a first sensor signal representing motion information of the key corresponding to application of the force; and calibrating the musical device based on the first sensor signal.