[sdiy] Idea: oddly timed envelope gen thingy

[Peter Grenader]

Excuse the rather complicated title of this post.  I prersent to you the
first annual SDIY design challenge competition.  First one who does it gets
something.

...wondering if anyone has ever made anything that does what I'm wishing for
right now:

A Beer Generator.  You put a pulse in, and....

kidding.

What I am wanting is an envelope that has two outputs.  One just boilerplate
AR, and the other which is attack only that is exactly timed so that
whatever length is dialed into the combined attack and decay, the A only
output will give an attack which last exactly as long as that combined A/R
time constant.

What I am wanting this for is (I think) fairly obvious.  You have an
amplitude envelope gating a sound and you want that sound to be swept
through a filter that is constantly rising, even when its amplitude is
fading out.  This is easy with careful settings of two envelopes, but how
about when you want to vc the overall length of the amp envelope so each
sounding is slightly different.  then this set-up become complicated so it
will work right in every instance.  t'would be nice if there was a jack that
just gave you that constant rise.

I think it would be (fairly) easy.  The output of the AR envelope internally
wired through a comparator, with a lag at it's output, right?  Yes, it could
be done using tow modules that do these functions- but why tie them up for
this I say?

somebody should work on this (for me).  Jim Patchell, Magnus and JH are
great candidates for this as their designs are terrific.

guys?

seriously - has anyone ever done this?

lemme know and thanks,

Peter