[sdiy] AHDSR schemo

[elmacaco]

Anyone know if you can do this with an expander and the tracking gens??


----- Original Message ----- 
From: "Scott Gravenhorst" <music.maker at gte.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, March 18, 2004 4:43 PM
Subject: Re: [sdiy] AHDSR schemo


> [my opinion mode]
> Though both methods will work, I believe that a one-shot would be the
better
> way.  The reason is that to use clipping, the ADSR signal has to be
variably
> amplified.  In doing so, the sustain part of the signal, which is also a
> controllable level, will also be amplified.  Because of this, the clipping
> amplification setting will interact with the sustain level.  With the one
> shot method, no such interaction will occur, regardless of the time dialed
up
> for punch.  Jim's method, which I also presented, can do this with only
> passive components, a cap, a pot and a diode and can also be applied to
> designs I've seen that use a threshhold detector and RS flipflop.
> [end]
>
> "Roman" <modular at go2.pl> wrote:
> >just a thought
> >take any ADSR, the best would be the kind with adjustable peak level,
> >and clip it. Without punch it'd work at normal level and look like ADSR.
> >When punch is activated, peak level wil increase, but output buffer would
> >be clipped at constant level, giving flat top for some time and AHDSR.
> >
> >Roman
> >
> >----- Original Message -----
> >From: "The Old Crow" <oldcrow at oldcrows.net>
> >To: <synth-diy at dropmix.xs4all.nl>
> >Sent: Thursday, March 18, 2004 7:13 PM
> >Subject: Re: [sdiy] AHDSR schemo
> >
> >
> >>
> >>   Seems to me the simplest way to add punch delay is with a small
one-shot
> >> (series pot, cap to ground, diode clamp to ground to snub the
> >> negative-going impulse and perhaps a buffer/inverter gate) in the logic
> >> line that changes state when the attack cycle reaches the point it
> >> transistions in the decay.
> >>
> >> Crow
> >> /**/
> >>
> >
>
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