Smart fretboard
A sensing fretboard for stringed instruments is described herein with respect to a guitar. The present invention includes custom frets and a modular sensing array that can be incorporated into a fretboard and coupled to the guitar. By measuring the dynamic forces applied by the players on the frets and strings of the guitar, musicians can be warned in real time during practice, when their grip is too strong, and to help musicians learn and recover from injuries.
1. A device for measuring force used in playing a stringed musical instrument comprising:
a sensing fret having a force detecting unit, wherein the force detecting unit comprises a touchpoint and a sensor, wherein the touchpoint comprises a flexure and a strip of viscoelastic rubber disposed underneath a crown of the flexure;
a printed circuit wherein the sensor is disposed on a surface of the printed circuit and wherein the sensor is disposed between the surface of the printed circuit and the touchpoint; and
wherein a force applied to the touchpoint is detected by the sensor.
2. The device of claim 1 wherein the sensor comprises a photointerrupter.
3. The device of claim 1 wherein the force detecting units are formed from aluminum.
4. The device of claim 1 wherein the number of force detecting units per sensing fret is six.
5. The device of claim 1 further comprising twelve sensing frets.
6. The device of claim 2 wherein the photointerrupter is configured to detect a distance between the touchpoint and the photointerrupter.
7. The device of claim 1 wherein the sensor comprises one selected from a group consisting of a photoelectric sensor, force-sensitive resistor, force sensing linear potentiometer, a piezoresistive element, piezoelectric element, Velostat®, strain gauge, matrix of mechanical actuators, optical fibers, and sensors using changes in resistance due to applied force.
8. The device of claim 1 wherein the flexure has a cantilever shape.
9. The device of claim 1 wherein the sensor comprises a pair of conductive pads on either side of a dielectric.
10. The device of claim 1 further comprising a sensing array positioned on a back side of a neck of the stringed musical instrument.
11. The device of claim 1 further comprising additional sensors to monitor temperature and humidity.
12. A system for measuring force used in playing a stringed musical instrument comprising:
a sensing fret having a force detecting unit, wherein the force detecting unit comprises a touchpoint and a sensor;
wherein a force applied to the touchpoint is detected by the sensor and wherein the sensor is configured to transmit information related to the force applied; and
a non-transitory computer readable medium configured to receive the information related to the amount force applied and to provide feedback to a user about the force applied.
13. The system of claim 12 further comprising a printed circuit on which the sensor is disposed.
14. The system of claim 12 wherein the sensor comprises one selected from a group consisting of a photoelectric sensor, photointerrupter, force-sensitive resistor, force sensing linear potentiometer, a piezoresistive element, piezoelectric element, Velostat®, strain gauge, matrix of mechanical actuators, optical fibers, and sensors using changes in resistance due to applied force.
15. The system of claim 14 wherein the photointerrupter is configured to detect a distance between the touchpoint and the photointerrupter.
16. The system of claim 12 wherein the sensor comprises a pair of conductive pads on either side of a dielectric.
17. The system of claim 12 further comprising a sensing array positioned on a back side of a neck of the stringed musical instrument.
18. The system of claim 12 further comprising additional sensors to monitor temperature and humidity.