Dual transient generator

[<<marjan>>]

> Yes it all makes sense and should all work. It would be a really nice
> modification to the basic curcit. But keep in mind everything you do will
> affect the cycle function in some way. If you intend to use the cycle function
> don't use the 100R resistor. And use the output of the opamp for threshold.
> This helps keep the rise/fall rates equal for tri LFO. BTW I have not tried
> this but the 555 has a CV input. Maybe the envelope could be modulated.

good idea,it'll modulate output where pots are but it'll affect
both rise and fall

one more thing,if you make mods for release control I mentioned
you can add one 2M log pot in series with that diode ,resistor
and switch to reset pin (4) - you get release control 

and if you diconnect fall diode from (6) as I said and connect it 
to wiper of 10k pot with one end at vcc and other to discharge pin
(1) of 556 you get sustain control

see what I mean of :
http://www.ecr.mu.oz.au/~ndf/synth/gifs/adsr.gif



marjan