A keyboard device is provided, and includes multiple keys and multiple hinges. Each of the keys is supported by a support member. Each of the hinges has: a pair of base parts, joined to the support member and separated from each other with a predetermined gap therebetween in a width direction of the keys, and a connection part, connecting the pair of base parts and each of the keys to each other in a longitudinal direction of the keys. A dimension of the connection part in the longitudinal direction of the keys is set to be larger than dimensions of the base parts in the width direction of the keys.

A keyboard device for a keyboard instrument, including a key support mechanism assembled to a keyboard chassis, improved not only in the ease of assembly during manufacturing of the keyboard device but also in the ease of disassembly during maintenance of the same. The keyboard device includes a keyboard chassis, a key disposed on the keyboard chassis, and a key support mechanism which supports the key from below and causes, upon depression of the key, the depressed key to operate such that the key pivotally moves about a virtual pivot. The key support mechanism includes a first arm and a second arm which, when mounted on the keyboard chassis during assembly of the keyboard device, in a state where one of the arms is pivotally engaged with the keyboard chassis, the other can be mounted on the keyboard chassis while being connected to the one.

A signal processing method according to an embodiment of the present disclosure includes outputting a second sound signal by varying a level of a portion of a band of a first sound signal based on a second parameter corresponding to a displacement of each of a plurality of operators, the first sound signal being identified by a first parameter corresponding to the displacement, the second parameter being different from the first parameter.

A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k−1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.

A musical sound producing apparatus includes a plurality of keys, a sound production information generator that generates sound production information for producing a musical sound based on a first key operation on any key among the plurality of keys, a control information generator that generates control information for controlling, on the basis of a second key operation different from the first key operation, a mode of the musical sound produced on the basis of the first key operation, and a musical sound signal generator that generates a musical sound signal on the basis of the sound production information and the control information.

An operation detection device for a key operation of a keyboard device includes a conductive unit configured to be disposed on each of keys, a substrate configured to be disposed facing each of the keys in a pressing direction of the keys. The substrate is provided with a sensor including at least first and second coils, the sensor being configured to be disposed spaced from one key so that at least one of the first or second coil outputs a signal corresponding to a distance between the one key and the respective sensor. The operation detection device includes a detection unit configured to detect a displacement of the one key in at least one of a yaw direction or a roll direction based on signals output from the first and second coils during a key pressing stroke of the one key.

The present disclosure provides a generation device having a plurality of operators that receive a user operation that causes generation of a sound. The generation device includes: at least one first operator arranged in a first region and configured to receive a first user operation that causes generation of a rhythm sound signal; at least one second operator arranged in a second region and configured to receive a second user operation that causes generation of a melody sound signal; and at least one third operator arranged in a third region and configured to receive a third user operation that causes a sound effect to be applied to a synthesized sound signal of the generated rhythm sound signal and the generated melody sound signal. The first region, the second region, and the third region are different regions of the generation device from each other.

Different aspects of the invention implement a sensor module that can be configured as a keyboard module or as a pedal module, allowing to connect a plurality of keyboard and pedal modules to assemble a configuration to the user's liking, such as, for example, the usual configuration of an 87-key piano together with two pedals. The sensor module transmits information about detected key or pedal strokes to a computer application for playback, either aural or visual. At the same time, the sensor module allows, both in the keyboard module and pedal module configuration, to transmit the feeling of playing a real piano.

A method for assembling a keyboard instrument includes installing a keyboard unit on a lower case such that an insertion hole of a key-connecting part of the keyboard unit is positioned corresponding to a lower side installation part of the lower case; thereafter, placing a upper case on the keyboard unit such that an upper side installation part of the upper case is positioned inside the insertion hole of the key-connecting part of the keyboard unit and mates with the lower side installation part of the lower case; and while the upper side installation part of the upper case is positioned inside the insertion hole of the key-connecting part of the keyboard unit and mates with the lower side installation part, inserting a fastening member into the upper side installation part and the lower side installation part to fix the upper case to the lower case via the fastening member.

A musical keyboard interface capable of controlling either a string instrument or synthesizer controller includes a small, consistent keyboard interface that moves with each hand along one or both edges of a stationary ruler. The ruler segments measure the static location of each note in chromatic order. The keys are oriented in length perpendicular to the length of the ruler and each key is as wide as each ruler segment. As the keyboard moves along the ruler and its keys realign with new ruler segments, the keys become able to articulate the notes indicated by their position. The transformation is gradual, smoothly sliding notes and chords in varying magnitudes and directions simultaneously.