Kawai Digital Piano Instructions A guitar pickup is essentially similar to a dynamic mike coil. For decades, energetic microphones have already been sent with the voice coil attached to the primary of the microphone's transformer, and maybe not referenced to soil (‘floating'). The microphone's event is usually connected to the wire shield, which is connected to the mike amplifier's floor (see Rane's web site for more discussion).
By and big, dynamic microphones are very calm devices as a result of the mix of transformer isolation and balanced, floating transmission lines during, along with protected, humbucking coils.
So why not guitars? Guitars are notoriously overwhelmed by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The most obvious solution is to float the guitar pickup to a healthy production, being a microphone. A similar idea was published that 2001 patent program like this Kawai Digital Piano Instructions?