[sdiy] low voltage filters

[Gordonjcp]

On Wed, Apr 19, 2017 at 02:38:13PM -0500, Chris McDowell wrote:

> - MS-20 Style, like the monotron 

This is probably your best bet.  There was also a "guitar synth" design floating about that appeared to be a single-supply 6V version of the Steiner Synthacon filter, which might be okay.

> - Vactrol, H11F1, or similar 

Whatever the problem, vactrols are never the solution.

> The point of this is that I have DCOs and ADSRs working wonderfully in a 3.3V environment. Some dirt is okay, I say. Super ideally, I want to implement an SVF with a single 3.3V supply, suggestions toward reality / sacrifices are welcome. I imagine this would work fine with vactrols, but I don't want to design anything with parts I can't buy from mouser, hehe. 

You could try working with a +3.3V/+6ishV supply and treating 3.3V as "analogue ground".

-- 
Gordonjcp MM0YEQ