I think this means the filter's cutoff frequency can be controlled
by injecting a CV into the filter via a pot. You'd wire say 5V DC to
one
lug of a 100K linear pot, the middle tap to the CV in of the filter,
and the
remaining lug to ground. Now, turn the knob and you will hear the
cutoff
frequency sweep.
As far as adding CV control of audio inputs and resonance: I have
wired up
CV control of resonance and audio input levels (HP/BP/LP) to my
CGS Steiner filter. it's pretty easy to do, but does require adding
some
external VCA's to Ken's design as Ken suggests below.
I am happy with the way it sounds after the mods. BTW, I have some of
the
VCA PCB's and Chips for sale if you want to try this mod, although
you could
probably use pretty much any 4 good VCA's and it'd work.
You can find info on the mod here:
http://www.charlielamm.com/synth/steiner/index.php
Info on the VCA's for this is here:
http://www.charlielamm.com/synth/duallinearvca.php
--Charlie Lamm
by injecting a CV into the filter via a pot. You'd wire say 5V DC to
one
lug of a 100K linear pot, the middle tap to the CV in of the filter,
and the
remaining lug to ground. Now, turn the knob and you will hear the
cutoff
frequency sweep.
As far as adding CV control of audio inputs and resonance: I have
wired up
CV control of resonance and audio input levels (HP/BP/LP) to my
CGS Steiner filter. it's pretty easy to do, but does require adding
some
external VCA's to Ken's design as Ken suggests below.
I am happy with the way it sounds after the mods. BTW, I have some of
the
VCA PCB's and Chips for sale if you want to try this mod, although
you could
probably use pretty much any 4 good VCA's and it'd work.
You can find info on the mod here:
http://www.charlielamm.com/synth/steiner/index.php
Info on the VCA's for this is here:
http://www.charlielamm.com/synth/duallinearvca.php
--Charlie Lamm
--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
> Frequency already has a CV control
>
> >Wait...what control do you mean by "CV already has one"?
> >
> >
> >
> >
> >
> >--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
> >> >Thanks for the info.
> >> >
> >> >Can you add CV in's to control the Frequency, Resonance,
> >and
> >> >Level?
> >>
> >> The others can't be CV controlled, short of adding CV
> >> circuitry (e.g. run the output through a VCA)
> >>
> >> Ken
> >>
> >>
> >__________________________________________________
> >_____________________
> >> Ken Stone sasami@h... or ken@c...
> >> Modular Synth PCBs for sale
> ><http://www.blaze.net.au/~sasami/synth/>
> >> Australian Miniature Horses & Ponies
> ><http://www.blaze.net.au/~sasami/>
> >
> >
> >
> >
> >See the following URLS for the CGS Modular Synth home page:
> >Main: http://www.cgs.synth.net/
> >Secondary: http://otherunicorn.0catch.com/synth/
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
____________________________________________________________
___________
> Ken Stone sasami@h... or ken@c...
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> Australian Miniature Horses & Ponies <http://www
.blaze.net.au/~sasami/>