PLAN B analog blog

OK I think I found my answer.  You just make the same circuits as
usual but use vactrols in place of some pots.  Correct me if I'm
wrong.

Monroe

On Sat, Feb 21, 2009 at 9:59 PM, Monroe Eskew <monroe.eskew@gmail.com> wrote:
> Hello,
>
> What is the basic architecture of a vactrol based filter?  Do you put
> a fixed voltage through the LDR and run the audio signal through the
> LED?
>
> I know that in VCA mode the audio goes through the LDR and the CV
> controls the light, causing smooth attenuation, so this is my best
> guess for how to make a filter out of it.
>
> Thanks,
> Monroe
>