A piano pedal system includes a pedal pivotable, over a full range of movement, between a first position and a second position; a sensor configured to output an electrical signal indicative of a position of the pedal; and a biasing member coupled to the pedal, the biasing member configured to apply a biasing force on the pedal in response to displacement of the pedal from the first position. The biasing force is substantially linear over the full range of movement.

A reaction force generator includes a hollow elastic member made of an elastically deformable material and a protrusion protruding from an outer surface of the hollow elastic member, the protrusion being tiltable in at least a first direction and a second direction, the first and second direction being symmetric with each other about a neutral position of the protrusion, wherein at least one of physical dimensions and material properties of the hollow elastic member is asymmetric with respect to the neutral position of the protrusion along the first direction and the second direction such that a first reaction force that would be generated by the protrusion when tilted in the first direction and a second reaction force that would be generated by the protrusion when tilted in the second direction are asymmetric with respect to the neutral position of the protrusion.

A keyboard apparatus includes: a key; a hammer assembly; a first member having a step; a second member slidable relative to the first member and configured to be moved in a direction in which the second member moves over the step, when the key is pressed; and a third member configured to guide the second member such that the second member is not located at a distance greater than or equal to a predetermined distance from the first member. The third member has a shape at a region of the third member such that the third member does not contact the second member in a state in which the second member is in contact with the first member. When the second member moves over the step, the region is opposed to the second member in the direction in which the second member moves over the step.

A keyboard apparatus includes: a key disposed so as to be pivotable with respect to a frame; a first member, an elastic member being disposed on at least a portion of a surface of the first member; a second member configured to be moved on the elastic member while elastically deforming the elastic member in response to pivotal movement of the key; and a hammer assembly connected to the key via the first member and the second member so as to pivot in response to pivotal movement of the key.

A keyboard apparatus includes: a key disposed to be pivotable with respect to a frame; a hammer assembly disposed to be pivotable in response to pivotal movement of the key; a first member; a second member disposed to be slid and moved on the first member when the hammer assembly pivots in response to pivotal movement of the key; and a third member connected to the first member and configured to guide the second member such that the second member is not located at a distance greater than or equal to a predetermined distance from the first member, the third member having a shape in which a second contact area that is an area of contact between the second member and the third member is less than a first contact area that is an area of contact between the first member and the second member.

A musical instrument comprising a mouthpiece and an elongated body, the elongated body comprises a plurality of finger contacts. The finger contacts comprise a first set of contacts arranged such that they may be simultaneously contacted by the little, ring, middle and index finger of the right hand and a second set of contacts arranged such that they may be simultaneously contacted by the little, ring, middle and index finger of the left hand. It further comprises a first thumb contact for contact by the right thumb and a second thumb contact for contact by the left thumb. The instrument comprises a tone generator controlled by the plurality of contacts, such that a first set of successive half tones is generated under control of the second set of contacts when the first thumb contact is operated, a second set of successive half tones is generated under control of the first set of contacts when the second thumb contact is operated, a third set of successive half tones is generated under control of the second set of contacts when the first thumb contact is freed; and a fourth set of successive half tones is generated under control of the first set of contacts when the second thumb contact is freed.

Disclosed is a wearable electronic music system including a plurality of first finger mountable implements, each having at least one surface engageable element operatively connected thereto. The system further includes a second finger mountable implement with a state altering element being disposable in a first state or a second state. A sound producing subsystem operatively communicates with the plurality of first finger mountable implements and the second finger mountable implement. In operation, when the state altering element is disposed in the first state, the sound producing subsystem causes a first output to be produced when at least one of said plurality of first finger mountable implements contacts the solid surface, and when the state altering element is disposed in the second state, the sound producing subsystem causes a second output to be produced as the at least one of said plurality of first finger mountable implements contacts the solid surface.

An electronic musical instrument includes an instrument body and a plurality of keys, each of which has an operation surface operated by a player's finger is provided on an external surface of the instrument body. Among the plurality of keys, at least two keys are disposed to be adjacent to each other, and the operation surfaces of the at least two keys are configured to be inclined to descend toward between the at least two keys when viewed from a left-right direction of the electronic musical instrument.

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.

A reaction force generator includes a hollow elastic member made of an elastically deformable material and a protrusion protruding from an outer surface of the hollow elastic member, the protrusion being tiltable in at least a first direction and a second direction, the first and second direction being symmetric with each other about a neutral position of the protrusion, wherein at least one of physical dimensions and material properties of the hollow elastic member is asymmetric with respect to the neutral position of the protrusion along the first direction and the second direction such that a first reaction force that would be generated by the protrusion when tilted in the first direction and a second reaction force that would be generated by the protrusion when tilted in the second direction are asymmetric with respect to the neutral position of the protrusion.