[sdiy] low voltage filters

[Quincas Moreira]

Check out the filter in Ray Wilson's battery powered noiseboxes. I've made
the WSG filter a few times, works great. The Noise Toaster has one too.

http://musicfromouterspace.com/index.php?CATPARTNO=WSG001&PROJARG=WSG2010%2Fwsg_page1.html&MAINTAB=SYNTHDIY&SONGID=NONE&VPW=1097&VPH=585

On Wed, Apr 19, 2017 at 3:22 PM, Oren Leavitt <obl64 at ix.netcom.com> wrote:

>
>
> On 4/19/17 3:10 PM, Gordonjcp wrote:
>
>> 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".
>>
>> Some of the old PAiA 2720 filter designs might work, too.
>
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-- 
Quincas Moreira
Test Pilot at VBrazil Modular
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