[sdiy] On Logon's Human-Capacitor Filter

[Aaron Lanterman]

He demoed this for me the other day. The lowpass mode does have a big 60 
hertz hum, as Logon said, but he found he could reduce this by staying 
away from the lab equipment and anything metal - even being near the 
cabinets or the metal chairs made a difference.

However - he has a way to switch it to a _highpass_ mode that's quite 
musically useful and obviously cuts out the 60 Hz in general by default.

In the lowpass mode, when he cranks the resonance, it turns into this way 
cool uncontrollable psychotic theramin. (Didn't seem to want to 
self-resonate in highpass mode).

Anyway, I deemed it cool. It's also kindof creepy, since he runs it 
wearing a groundstrap on his wrist and wearing a rubber glove (got better 
capacitance that way, or something.)

- Aaron