An accessory for modifying sound output of a musical instrument. The body of the instrument has a soundboard. The accessory includes a sound sensor, an actuator, a fastener, and a controller. The sound sensor engages the body and senses vibration of the body representing the sound output of the musical instrument. The actuator engages the soundboard and deforms the soundboard of the musical instrument so as to modify the sound output of the musical instrument. The sound sensor is preferably arranged distally to the actuator. The fastener engages the accessory to the musical instrument, to locate the actuator against the soundboard of the musical instrument. The controller is connected to the actuator and the sound sensor for receiving and analysing the sound output sensed by the sound sensor, and controlling the actuator in dependence on the sound output sensed by the sound sensor.

An electronic musical instrument includes: a chord-playing input device; a sounding part that emits chord sounds; and a display part that displays an image. The chord-playing input device includes: a chord designating button group assigned with chords; a chord changing button group assigned with change methods for changing an assignment state for the chord designating button group; a sounding information generating part that generates sounding information for making the sounding part emit the sound of the chord corresponding to operation for the chord designating button group and chord changing button group; and a display information generating part that generates display information for making the display part display a plurality of chord images and change method images in the same arrangement order as those of the chord designating button group and chord changing button group.

A keyboard with strum string apparatus for creating accurate guitar sounds with an electronic keyboard includes a microcontroller is coupled within a keyboard body. A power source, a pair of speakers, a plurality of control buttons, and a plurality of piano keys are coupled to the keyboard body and are in operational communication with the microcontroller. A plurality of piano keys is coupled to the keyboard body. A strum board is coupled to the keyboard body. The strum board has a strum base coupled to the keyboard body, a pair of bridges coupled to the strum base, a plurality of strings extending between the pair of bridges, and a pickup coupled to the strum base. The pickup is in operational communication with the microcontroller.

A multi-stringed musical instrument, such as a guitar, having a neck with a partially hollow interior containing a number of linear actuators, each connected to a fret which projects proud of the neck and is in contact with a taught string, wherein the linear actuators are controlled by means of a user-selected input signal via functional communication with a small control panel, tablet, smartphone, computer or laptop.

A signal processing device acquires information relating to a stringed instrument, and sets a parameter to an equalizer based on the acquired information relating to the stringed instrument.

This invention eliminates most mechanical switching in vibrational pickup circuits by using variable gains to combine signals of sensors in differential amplifiers as J−1 humbucking pairs for J>1 number of sensors, with the sensors matched to produce the same level and phase of unwanted hum from external sources. It can also combine J>1 number of matched sensors with K>1 number of dissimilar sensors which are matched only to each other in the same manner. This produces not only all the possible mechanically switched humbucking signals, but all the continuously-varying combinations of humbucking signals in between.

A set of new accessories for the violin family instrument, switch fingerboards, which includes an assembly of switches, suitable for violin learners. Switches are laid out regularly on the spots corresponding to the notes which are written on the fingerboards. Once a switch is turned on (pressed by a finger), a CPU will be triggered, and then output of the signal of a desired pitch will immediately cause the speaker to produce a sound of that pitch. Such a switch fingerboard will surely assist beginners to practice how to stop strings and to shift positions to get pitches more precisely and efficiently. Additionally, an n-like, switch assembly fingerboard is described, where all the switches are embedded into a rectangular plate in equal intervals. With the same CPU, ROM, amplifier and speaker system, any sound recorded from a performance in the violin family, corresponding to each note, can be replayed on command.

A set of new accessories for the violin family instrument, switch fingerboards, which includes an assembly of switches, suitable for violin learners. Switches are laid out regularly on the spots corresponding to the notes which are written on the fingerboards. Once a switch is turned on (pressed by a finger), a CPU will be triggered, and then output of the signal of a desired pitch will immediately cause the speaker to produce a sound of that pitch. Such a switch fingerboard will surely assist beginners to practice how to stop strings and to shift positions to get pitches more precisely and efficiently. Additionally, an n-like, switch assembly fingerboard is described, where all the switches are embedded into a rectangular plate in equal intervals. With the same CPU, ROM, amplifier and speaker system, any sound recorded from a performance in the violin family, corresponding to each note, can be replayed on command.

A musical instrument special effects device, comprising a special effects unit connected by wire between the musical instrument and an output device, where the unit is operatively arranged to selectively produce at least one of a plurality of preprogrammed special audio effects; and a controller is operatively arranged to wirelessly control the special effects unit.

The present embodiments relate to a digital music instrument that allows musicians to play and control synthesizers. An instrument neck assembly is provided with adjustable buttons. The neck assembly is attached to an instrument body with an attachment mechanism.