OK, so this thread is almost a month old, but I think this is a simpler
patch, that actually works better than the others proposed. The
question was, how to use a DSG/DTG to get a true attack/decay envelope,
which can be retriggered before completely decaying.
trigger in -> DSG #1 trig. in
DSG #1 fall full right
DSG #1 output -> DSG #2 input
DSG #2 rise full right
DSG #2 output -> envelope out
Then set your envelope rise time on DSG #1 rise, and your fall time on
DSG #2 fall. Since DSG #1 falls instantly, it can be retriggered as
soon as it finishes rising, and DSG #2 will obligingly follow it up as
fast as it wants to go. (DSG #1 could be any DTG, and DSG #2 could be a
DTG with the signal input jack option.) You can also easily VC the
rates.
Re John Lofflink's patch, in addition to needing an extra module,
setting rise time is more fiddly: you have to set it the same on both
DSG/DTG stages. (However, that patch will work with two vanilla DTGs,
since it doesn't need the signal in.)
Re James Coplin's (modified) patch, I don't understand why you want a
rising edge out of DSG #1 into DSG #2 input - only the trig. in would
care about a rising edge. With the nonlinear rise on DSG #1, you either
get a nonlinear envelope, or again you have to set DSG #2's rise time
to be the same as the effective rise time on DSG #1. Actually the above
patch is the same as your original (linear) patch, with the knobs set
differently.
Bob
patch, that actually works better than the others proposed. The
question was, how to use a DSG/DTG to get a true attack/decay envelope,
which can be retriggered before completely decaying.
trigger in -> DSG #1 trig. in
DSG #1 fall full right
DSG #1 output -> DSG #2 input
DSG #2 rise full right
DSG #2 output -> envelope out
Then set your envelope rise time on DSG #1 rise, and your fall time on
DSG #2 fall. Since DSG #1 falls instantly, it can be retriggered as
soon as it finishes rising, and DSG #2 will obligingly follow it up as
fast as it wants to go. (DSG #1 could be any DTG, and DSG #2 could be a
DTG with the signal input jack option.) You can also easily VC the
rates.
Re John Lofflink's patch, in addition to needing an extra module,
setting rise time is more fiddly: you have to set it the same on both
DSG/DTG stages. (However, that patch will work with two vanilla DTGs,
since it doesn't need the signal in.)
Re James Coplin's (modified) patch, I don't understand why you want a
rising edge out of DSG #1 into DSG #2 input - only the trig. in would
care about a rising edge. With the nonlinear rise on DSG #1, you either
get a nonlinear envelope, or again you have to set DSG #2's rise time
to be the same as the effective rise time on DSG #1. Actually the above
patch is the same as your original (linear) patch, with the knobs set
differently.
Bob
--- In SergeModular@yahoogroups.com, "cuari7" <medejd@t...> wrote:
> Anybody know of a way to turn a DSG/DTG into a true Attack/Decay EG?
> I don't mean what one can get by feeding a pulse/gate into
> the "trigger" input (the result of this is an AD envelope which
> unfortunately WON'T retrigger until it decays back to zero. I don't
> want this!!).
> I want the ability to have an AD EG that can be retriggered with any
> speed desired, without having to wait 'till it decays off.
> Anybody know anybody who can monkey with this thing and turn it into
> the above?
> Let me know.
> cuari7
---------------------------------------------
Robert A. Hearn
rah@...
http://www.swiss.ai.mit.edu/~bob/