[sdiy] Envelope to Gate/Trigger circuit?

[neil harper]

excellent, thanks!

On Thu, 2013-10-03 at 22:24 -0700, eidorian at aladan.net wrote:
> On 2013-10-03 22:16, neil harper wrote:
> > hey guys and gals,
> > i'm just wondering if there already exists a circuit that can output 
> > a
> > gate and trigger from an existing envelope?
> >
> > the gate part could be a comparator, going high with an input >0V. 
> > that
> > seems pretty straight forward. the trigger i suppose would go high 
> > when
> > a falling voltage starts rising again.. seems like an easy problem 
> > for a
> > microcontroller, but i have no clue how that would be done analog. 
> > any
> > ideas?
> 
> As often is the case, Ken's your man.  Assuming a straightforward ADSR 
> or AR envelope:
> 
> Gate (use the "rising" output) - 
> http://www.cgs.synth.net/modules/cgs62_sd.html
> Trigger (use the "rising" output from the Gate as its input) - 
> http://www.cgs.synth.net/modules/cgs24_gatetotrigger.html
> 
> Cheers,
> A.
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-- 
//neil harper
every wave is new until it breaks