[sdiy] Varible phase curves of envelopes.

[Peter Grenader]

Guys/gal:

Has anyone here ever made an envelope generator which will allow the user to
not only dial in the time for each phase, but it's curve (linear, log and
degree of severity) as well?

I would LOVE to see it if you have.

I've been playing around with doppler effect and noticed that the shape of
the envelope is everything.  The acceleration/deacceleration of the attack
and decay is instrumental in achieving a natural effect. I have been able to
get it with real real complicated VC of both the attack and decay (I have
Blacet envelopes, they let me VC each phase independently - thanks for this,
J)).  He had a trimmer inside to adjust the curve for all phases, but I was
hoping for one where I could set that independently for each phase and of
course, bring that to the faceplate along with VC's for it and for the time.

This has been pestering me since I saw the specs for Native Instruments' FM7
whereby you can do this, via grab-able handles in the operator edit window,
much like vernier curves in Illustrator.  Way cool.

My 'fantasy' envelope generator (sick idea), would be one that gave me
separate controls for time and direction of curve of each phase, VC for each
on each phase, onset delay, trigger (AR) and gate (AD/ADSR) recognition with
a sensitivity pot which would allow it to be triggered on variable threshold
levels, manual and VC control of overall EG length (time constant), EG ON
high pulse, end of cycle pulse, Positive and inverted positive baised EG
output.

Most of this I've figured out how to do via analog.  The overall length and
variable curve thing has me stumped though.  suggestions?

Peter