Auto Tune Efx A guitar collection is basically just like a dynamic microphone coil. For many years, active microphones have been wired with the voice coil attached to the primary of the microphone's transformer, and not referenced to soil (‘floating'). The microphone's case is usually connected to the cable shield, that will be connected to the microphone amplifier's ground (see Rane's internet site for more discussion).
By and big, dynamic microphones are extremely quiet units consequently of the combination of transformer isolation and balanced, suspended indication lines all through, in addition to shielded, humbucking coils.
So why don't you instruments? Guitars are notoriously affected by noise. Humbucking pickups are only an incomplete (though important!) solution. The obvious answer would be to float practicing the guitar pickup to a balanced production, just like a microphone. The same idea was printed that 2001 patent request like this Auto Tune Efx?