To add
to Bonnie's input:
The
voltage is usually 0-5v or 0-10v depending on the system.
Most
modulars have two types of signals being distributed- Audio signals and CV
signals.
Sometimes it is a good idea to use two different colors of patch cables
so you can quickly tell whats what.
Audio
signals are obviously continuously variable and typically more
complex.
CV
signals can be variable or static voltage levels. The CV signal path may
be altered in more than one place:
At the
Keyboard, you generate a CV to the Oscillators. Then if you add an LFO you are
applying CV to that signal.
The
resultant CV is then moved on to perhaps a filter, then EG/VCA
etc.
Depending on what you are trying to accomplish determines what kind of CV
you put to the input.
For
instance, if you want to add a vibrato to the pitch of an oscillator, you can
apply a slow varying CV to the oscillator's CV input.
Usually you would apply it with the output CV of an
LFO.
If you
want to alter a VCA with CV you get a tremolo or varying amplitude
effect.
You
can apply CV to a filter module to sweep the frequency of the filter as
well.
Get
the idea?
I am
not sure how the CV input on your Moog Source is set up- is it routable or is it
applied to a particular place in the synth.
Surely
someone on the list will know that one...
I
recommend you find a tutorial on modular synthesis to really understand the
applications of CV.
Anyone
got a good link for that?
Rory
McDonald
OldSynth Moderator
-----Original Message-----
From: Bonnie Goodwin [mailto:goodwinbonnie@...]
Sent: Tuesday, August 19, 2003 8:48 AM
To: oldsynths@yahoogroups.com
Subject: Re: [oldsynths] control voltage questionTo put it simply, synthesizers work with a one volt per octabe change.Adjust accordingly, whether you are feeding a solid voltage, an audio voltage, or some kind of a ramp. The control voltage will change accordingly.Bonnie *:>
Einar_Ekström <einarekstrom@...> wrote:hi all,
i have a moog source with a control voltage input (CV), but i'm not
really familiar with what it does and how it works.
i understand you can feed a signal in to the CV input, and somehow
control the synth.
what kind of signal should be fed in to the CV-input(any audio
signal??), and which parameters(pitch only??) are controllable with
the signal?
thanks for any help!
/einar
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