Crazy idea for hum reduction in single coils.

[LeftyStrat]

So I know there is the Suhr-Illitch BPSSC, and I know many people have used a dummy coil to reduce hum.

The problem with the dummy coil is it tends to reduce the sparkle associated with single coils.

From what I've read about the BPSSC, it's more effective when built into the guitar than when used as a backplate. Another downside is the questionable patent that makes it expensive.

So imagine having a dummy coil installed in your guitar, on the same plane as your pickups, but it has it's own output into a stereo cable. The stereo cable runs to a special pedal, where the output level of the regular signal is monitored, and the subtraction of the dummy coil signal is applied in inverse proportion to the output signal level.

In other words, when you're not playing, the dummy coil hum pickup is subtracted for minimum amplitude. When the regular signal of the guitar goes up, less subtraction is applied.

Seems a microprocessor could do this, and the regular signal could go through without modification. The microprocessor monitors the signal and adjusts the resistance between the out of phase dummy coil and ground.

Interesting idea, or have I had too many beers?

[Reeltarded]

I just play with the buzz. Maybe I need a beer?

[LeftyStrat]

I just play with the buzz. Maybe I need a beer?

Maybe Garlin will buy you one.

[Reeltarded]

Maybe I'll just drink grain alcohol then.

[LeftyStrat]

Maybe I'll just drink grain alcohol then.

He'll just complain about your buzz.

[d95err]

A microprocessor would not be necessary. All you need is a simple envelope follower, like in a compressor, noise gate, etc.

[LeftyStrat]

Yes, it could be done with an envelope follower. But you'd need some kind of additional switching in Strats with the RW middle pickup.

With a microprocessor I think you could do phase detection to know when to invert the signal of the dummy coil.

Perhaps with a microprocessor you could do analysis of the dummy coil signal and re-synthesize or filter the dummy coil signal to better match the noise from the pickup. I know the BPSSC has an adjustment for high frequency components.