A percussion instrument driving device includes an actuator and an actuator mount. The actuator includes an actuator surface configured to vibrate in response to an electrical signal to vibrate a vibration surface of a percussion instrument from outside of the percussion instrument. The actuator mount is disposed outside the percussion instrument having a vibration surface. The actuator mount is configured to mount the actuator to the percussion instrument from outside of the percussion instrument, with the actuator surface facing the vibration surface and spaced from the vibration surface.

[Technical problem] Circulatory sound regulation that changes environmental sound into input sound, converted sound with arbitrarily regulatory frequency component, arbitrarily regulatory amplitude or both of them, output sound, another input sound synthesized with this output sound and an environmental sound, and another converted sound made from this input sound. [Solution] Apparatus comprising: input means that receives environmental sound from arbitrary environment as an input sound; conversion means that converts the input sound into a converted sound that contains arbitrarily regulatory frequency component including frequency component that approximates to principle oscillator, arbitrarily regulatory amplitude or both; and output means that transmits the converted sound to environment as an output sound; whereby the input means receives synthetic sound synthesized with the output sound and environmental sound as an input sound again, and the conversion means converts this input sound further into another converted sound.

A stringed instrument pickup and feedback system, comprising a sound pickup device disposed on a string instrument. The sound pickup device comprises a transducer and at least one pickup, a sound processing circuit and a power supply. The pickup activates the transducer to realize resonance enhancement on the instrument body. The transducer is disposed on the string instrument unrestricted by internal bracing. The instrument can be any of pickup, guitar, ukulele, violin, Guqin, Guzheng and Mandolin. The present invention enables the construction of stringed instrument to add vibration and amplify sound of a stringed instrument using the transducer and thus reduce the dependence on rare woods in manufacturing these instruments.

A switch lock apparatus for a guitar having a pickup selector switch is disclosed herein for locking a position of the pickup selector switch. The switch lock apparatus may include a body plate, a mounting hole, a switch opening defined in the body plate which is configured to receive the pickup selector switch. The switch lock apparatus may also include at least one first side receptacle positioned along the first switch opening side and at least one second side receptable positioned along the second switch opening side. The at least one second side receptacle may be offset from the at least one first side receptacle along the switch opening length to define a central passageway that enables free movement of the pickup selector switch. The switch lock apparatus may define a locked position when the pickup selector switch is received by one of the first or second side receptacles.

The disclosure provides a keyboard device and an electronic musical instrument. The keyboard device includes: a plurality of keys 60 arranged in a left-right direction (scale direction); a base member 50 supporting the keys 60; a vibration transmission member 70 being in contact with the base member 50 across an arrangement region of the keys 60 in the left-right direction; and a vibrator 72 fixed to the vibration transmission member 70 and vibrating based on pressing of the key 60. Therefore, the vibration of the vibrator 72 is transmitted to each of the keys 60 (base member 50) arranged on the left and right via the vibration transmission member 70. As the vibration transmission member 70 has higher rigidity than the base member 50 made of resin, the vibration of the vibrator 72 is easily transmitted in the left-right direction through the vibration transmission member 70.

A stringed instrument, for example an electric guitar, comprises a neck and a body defining a neck and body joint. The neck and body joint includes a neck having a tapered tenon, and a body having a complementary tapered mortise surrounding the tapered tenon. The tapered tenon may be held within the tapered mortise with a tensioning device without the use of adhesives between surfaces of the tapered tenon and surfaces of the tapered mortise.

An electronic drum, comprising: a bottom member; a drum head; a drum sensor comprising: a passive resonant circuit mounted on the drum head and having a resonant frequency; and an active resonant circuit mounted on the bottom member and configured to excite the passive resonant circuit at the resonant frequency; a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency; and a detector to detect a level of RF signal from the driven active resonant circuit for sensing a position and/or velocity of the drum head; and a signal processor, coupled to the detector, configured to process the detected level of RF signal to sense a position and/or velocity of the drum head for determining when the drum head is hit.

A sensing system for a computer input device. The sensing system comprises an actuator to attach to a key top or button. The actuator is moveable along an axis or hinged. The sensing system further comprises a biasing element to exert a biasing force on the actuator directed along the axis. The sensing system further comprises an actuator motion sensor associated with the actuator. The actuator motion sensor comprises a passive resonant circuit configured to be moved by the actuator and having a resonant frequency, an active resonant circuit configured to excite the passive resonant circuit at the resonant frequency, a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency, and a detector to detect a level of RF signal from a driven actuator motion sensor for sensing a position and/or velocity of the actuator.

A sustaining device is described for prolonging the vibration of the strings of a stringed musical instrument, such as an electric guitar having two or three electromagnetic pickups. The pickups are all low impedance transducers that can function either as pickups or driver transducers, depending on whether they are connected to the input of the instrument pickup amplifier or to the output of the sustainer amplifier, respectively. When a transducer is being used as a sustainer driver, it cannot be simultaneously used as a pickup. Different methods of selecting transducers to function as pickups or drivers are described. The transducers, having only hundreds of wire turns instead of the usual thousands of turns for common pickups, have a flat audio frequency response that can be modified to produce a multitude of common pickup sounds by manipulating the transducer resonance frequency, bandwidth, and amplifier gain.

A method, apparatus and kit for forming a pickup for a musical instrument comprises a ferromagnetic core having an electrical winding wound therearound, the electrical winding having an output wire operable to output a signal for receipt by an amplifier representing sound vibrations produced by the musical instrument, an activation magnet, and a flexible mount wherein one of the ferromagnetic core and the activation magnet are rigidly secured to the musical instrument and wherein the flexible mount is located the ferromagnetic core and activation magnet so as to permit a degree of movement by the other of the ferromagnetic core and activation magnet relative to the musical instrument under vibration thereof.