Systems and methods are provided performing autonomous tuning of a stringed instrument. Images of the stringed instrument are acquired by at least two cameras and processed to identify the location of a peg. A robotic peg actuator is then engaged to actuate rotation of a peg in order to rotate the peg to a tuned angular orientation, guided by feedback generated by processing acoustic signals recorded by an acoustic transducer while a string associated with the peg is agitated. In some example implementations, the cameras and peg actuator are rigidly mounted to a frame that is configured to support the stringed instrument during peg imaging and actuation. A robotic string actuator may be provided to facilitate vibration of the string during the tuning process. Multiple robotic peg actuators may be included for per-peg rotational actuation and/or a given peg actuator may be robotically translatable to actuate more than one peg.

An electric stringed musical instrument (e.g., guitar) system includes an acoustics system and an electronics system (module). The electronics system includes a base shaped to slidably engage the slot in the acoustics system. The module is held in place by respective sets of magnets in the acoustics system and the electronics system. The aggregate magnetic force near a bottom edge of the electronics system are stronger than the aggregate magnetic force near a top edge of the electronics system to ensure alignment of the bottom edges of the acoustics system and the electronics system.

An electric stringed musical instrument (e.g., guitar) system includes an acoustics system and an electronics system (module). The electronics system includes a base shaped to slidably engage the slot in the acoustics system. The module is held in place by respective sets of magnets in the acoustics system and the electronics system. The aggregate magnetic force near a bottom edge of the electronics system are stronger than the aggregate magnetic force near a top edge of the electronics system to ensure alignment of the bottom edges of the acoustics system and the electronics system.

A sound post, particularly for string instrument, having a variable length is described. The sound post consists of a first tubular component having a first end and a second end and a second tubular component having a first end and a second end, wherein the second tubular component is at least partially arranged in the first tubular component in a movable manner, and wherein a first pivotable end piece is arranged at the first end of the first tubular component. The sound post also comprises a counter-element and a tension fastener element which is rotatably arranged and suitable to be countered against the counter-element by rotation. A pivotable end piece is also arranged at the second end of the second tubular component. A sound post tool set for mounting the sound post in an instrument and a method for mounting the sound post in an instrument are also disclosed.

An apparatus for emulating a variety of string instruments with a variety of configurations in order to measure the resulting, actual tension of a string on that instrument. The tension may be measured in real-time.

An apparatus for emulating a variety of string instruments with a variety of configurations in order to measure the resulting, actual tension of a string on that instrument. The tension may be measured in real-time.

Apparatus and methods for securing a string to an acoustic, stringed instrument are disclosed. Example apparatus include string anchors secured to a bridge of the stringed instrument. The apparatus provide components enabling selective tensioning of the string. A seat arrangement provided by string anchors receives an anchor end of string and the string passes from the seat arrangement through a base arrangement and towards a headstock of the acoustic instrument.

Apparatus and methods for securing a string to an acoustic, stringed instrument are disclosed. Example apparatus include string anchors secured to a bridge of the stringed instrument. The apparatus provide components enabling selective tensioning of the string. A seat arrangement provided by string anchors receives an anchor end of string and the string passes from the seat arrangement through a base arrangement and towards a headstock of the acoustic instrument.

A universal tuning knob for stringed instruments is presented. The invention consists of a knob with an elongated and threaded cylindrical shaft. The shaft includes a lumen sized to receive the machine head post of any stringed instrument. The outside perimeter of the knob is configured for grip. The threaded cylindrical shaft includes a slot on its side wall to receive and retain a bushing. The bushing includes a second slot that can be notched (i.e. sized) to fit and lock the machine head post of any stringed instrument. A sleeve lock with internal threads is threaded onto the threaded cylindrical shaft of the knob thereby retaining the bushing. An optional second lumen on the head of the knob is configured to receive a mounting screw.

A universal tuning knob for stringed instruments is presented. The invention consists of a knob with an elongated and threaded cylindrical shaft. The shaft includes a lumen sized to receive the machine head post of any stringed instrument. The outside perimeter of the knob is configured for grip. The threaded cylindrical shaft includes a slot on its side wall to receive and retain a bushing. The bushing includes a second slot that can be notched (i.e. sized) to fit and lock the machine head post of any stringed instrument. A sleeve lock with internal threads is threaded onto the threaded cylindrical shaft of the knob thereby retaining the bushing. An optional second lumen on the head of the knob is configured to receive a mounting screw.