Guitar Effects Noise Gate A guitar pickup is actually much like a vibrant microphone coil. For many years, dynamic microphones have been sent with the voice coil attached with the primary of the microphone's transformer, and perhaps not introduced to floor (‘floating'). The microphone's situation is normally connected to the cable guard, that is attached to the mike amplifier's floor (see Rane's web site for more discussion).
By and big, powerful microphones are extremely quiet devices consequently of the mix of transformer isolation and balanced, suspended transmission lines throughout, as well as shielded, humbucking coils.
Therefore why don't you guitars? Guitars are once plagued by noise. Humbucking pickups are merely a partial (though essential!) solution. The most obvious option is always to float your guitar pickup to a balanced output, as being a microphone. A similar strategy was published that 2001 patent application like this Guitar Effects Noise Gate?