Wired Keyboard And Mouse Best A electric guitar pickup is basically just like a dynamic microphone coil. For decades, dynamic microphones have been wired with the voice coil mounted on the principal of the microphone's transformer, and perhaps not introduced to ground (‘floating'). The microphone's event is normally connected to the cable shield, that is attached to the microphone amplifier's soil (see Rane's website for more discussion).
By and large, energetic microphones are very calm products consequently of the mixture of transformer solitude and healthy, floating sign lines during, along with shielded, humbucking coils.
So why don't you guitars? Guitars are notoriously affected by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious option is to float practicing the guitar pickup to a healthy output, being a microphone. A similar idea was published this 2001 patent application such as Wired Keyboard And Mouse Best?