triggered s&h, in phasers or modules?

[Rob]

Yes.. just about any standard vco/oscillator can be made to retrigger by
using a fet and some scheme to quickly discharge the cap that controls the
oscillation. Its not always the easiest thing to get to work right, but its
worth the trouble.

Rob

----- Original Message -----
From: Robert H. Rickner-III <rrickner at zoo.uvm.edu>
To: <synth-diy at mailhost.bpa.nl>
Sent: Wednesday, January 26, 2000 10:15 PM
Subject: Re: triggered s&h, in phasers or modules?


> Will this work with any LFO, ie could I add a trigger input to one LFO and
> run in a S&H for wacky LFO possibilities?
>
> On Tue, 25 Jan 2000, Rob wrote:
>
> > OH, BTW, I forgot a few things:
> >
> > 1)you need a flanger/phaser pedal (duh!)
> > 2)you have to find the LFO output and route back to the cap in the
feedback
> > loop (go to lepers schematics or look on the net; AFAIK, the SPEED/RATE
and
> > WIDTH are the ones that directly affect the LFO, start from the WIDTH
which
> > controls the LFO amplitude and route back until you get at that little
cap)
> > 3)THEN, you need gate/click/sync output from a synth or midi/cv or an
> > amplified audio trigger. The output of this will trigger the LFO fet and
> > cause the reset.
> > 4)To sync it, you merely play a note periodically or send out a click
track
> > at the rate at which you want to sync to, say, 1 bar, half bar, etc
> > 5)mess with the LFO rate on your pedal until you get the type of sound
you
> > want.. since you are retriggering the flanger, you can get some really
WILD
> > stuff out of it by having the LFO at various rates that dont match the
> > retrigger note/click.
> >
> > Ill put on some realaudio on my page and some pix of it (dying to try
out my
> > new camera!)
> >
> > Rob
> >
> >
> > ----- Original Message -----
> > From: Rob <cyborg_0 at iquest.net>
> > To: AH <Analogue at hyperreal.org>; Cyrus <cyrusjoaquin at my-deja.com>
> > Cc: synth-diy <synth-diy at mailhost.bpa.nl>
> > Sent: Tuesday, January 25, 2000 6:41 AM
> > Subject: Re: triggered s&h, in phasers or modules?
> >
> >
> > > Yes, there is! You just need to find the LFO on the phaser/flanger and
> > find
> > > a way to use a fet to reset the cap so that the sweep of the LFO can
be
> > > triggered. Look at the Arp odyssey docs for more info on how to do
this.
> > >
> > > Believe me, you WILL NOT regret doing this! I have a trigger jack on
my
> > DOD
> > > flanger pedal, and its wonderful.
> > >
> > >
> > > Rob
> > >
> > > ----- Original Message -----
> > > From: Cyrus <cyrusjoaquin at my-deja.com>
> > > To: AH <Analogue at hyperreal.org>
> > > Cc: synth-diy <synth-diy at mailhost.bpa.nl>
> > > Sent: Monday, January 24, 2000 10:06 PM
> > > Subject: triggered s&h, in phasers or modules?
> > >
> > >
> > > > ---
> > > > Hey,
> > > > I've heard tunes where the sample-and-hold on a phaser or other
> > filter/fx
> > > was in time with the beat or triggered by each new note.  Can anyone
tell
> > me
> > > how this is done?  Are there prefab fx boxes or synths that trigger
each
> > > step of the s&h from an external clock, or from the incoming audio?
Are
> > > there modules that can be configured to do this?
> > > > Thanks!
> > > > Cyrus
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --== Sent via Deja.com http://www.deja.com/ ==--
> > > > Share what you know. Learn what you don't.
> > > >
> > >
> > >
> >
> >
>
>