An electronic vibrato system for a stringed instrument comprises an actuator and microcontroller which are disposed within a chassis. The control arm moves the actuator from a resting position to non-resting, rotated positions. The system is below a face of a stringed instrument such that the system has a disposed fulcrum within the instrument. The rotated positions impart resistive forces on said actuator and imparting control signals. The microcontroller processes said control signal and modulates pitch.

Sonic improvement for all stringed instruments that employ a fulcrum tremolo bridge system with back of instrument counter tensioning springs. The improvement is provided by securing springs to claw assembly, as well as securing claw assemble to a flat plate of material which is in turn secured to instrument body. The claw and resonator plate can be fabricated as two individual pieces then fastened together or as a combined one piece assemble that is then fastened to instrument body.

Sonic improvement for all stringed instruments that employ a fulcrum tremolo bridge system with back of instrument counter tensioning springs. The improvement is provided by securing springs to claw assembly, as well as securing claw assemble to a flat plate of material which is in turn secured to instrument body. The claw and resonator plate can be fabricated as two individual pieces then fastened together or as a combined one piece assemble that is then fastened to instrument body.

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 method of outputting a parameter of a sound processing device receives an audio signal, obtains information of the parameter of the sound processing device, which corresponds to the received audio signal, by using a trained model obtained by performing training of a relationship among a training output sound of the sound processing device, a training input sound of the sound processing device, and a parameter of sound processing performed by the sound processing device, the parameter of the sound processing device being receivable by a user of the sound processing device, and outputs obtained information of the parameter of the sound processing device corresponding to the received audio signal.

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.

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.

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 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 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.