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
To 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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