Blend on an envelope filter

Started by mills, May 27, 2008, 11:11:42 PM

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mills

Hi everyone,

So, I traced out the circuit to one of my envelope filters to rebuild, but I'd wanted to tack a clean blend onto it...  I read the B-blender pages and was going to use the minimal JFET  (http://www.seanm.ca/stomp/minblend.html) version for simplicity and so I could cram everything into a smaller enclosure, but I had a quick question about the best place to join it into the circuit.

I know that I could probably just join the "send" on the minimal blender to the "in" of the effect, but I was wondering if there would be a better place to split the signal since the blend will be wired into the effect, not in a separate box?

The input of the circuit goes into half of a dual op-amp, then splits in two... with one part going to an op-amp for the filter, and one to an op-amp for the envelope follower (at least, I think that's how it works).  To me it would make sense to bring a third part off here for the JFET blend, although I'm not sure if this is actually somehow beneficial...  It just seems like it should be.  Would there be anything wrong with taking the signal for the blend  here?  I think I should drop the input impedance of the minimal blender as well, but I'm not totally sure... I think that I can figure that part out, with some reading though.

Thanks!