[sdiy] positive/negative envelopes...

[greg montalbano]

I tried this one on my Pro One, and it works just fine...
http://www.solorb.com/anhevn/pro1.html


~GMM

At 09:15 AM 7/15/02 -0700, you wrote:
>Hello all-
>
>Anyone have an idea how to implement positive/negative going envelopes 
>from a positive
>envelope with one pot and one op-amp?
>
>I would like to put in a control that works like this:
>
>
>
>            neg    0    pos
>            ---/\/\/\/\---     VCF Env amt
>                   |
>                   |
>
>
>See what I am saying?
>
>I'm pretty sure this is possible, I just can't remember how to do it....
>
>                         -Duane
>
>
>
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>
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