Euterpe Synthesizer Laboratories Vertice, User Manual

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Fine Tuning
In Percussive mode you can use the Release pot as a logarithmic Fine Tune. Use that to closely match
your input and modulation waves.
Combining Ext-GATE with Loop Mode
Injecting a GATE signal via external keyboard or via internal trigger button in Percussive mode causes
a nearly unpredictable decrease of the looping frequency. This is a very uncommon and sometimes
funny feature. Trying to get exact intervals from this lowering is not so easy and often luckiness do the most
part of the work.
[ 44 ] the Envelope Generator section
• Always active loop.
It's the regular situation, an infinite repeating cyclic waveform that can be quickened or slowed by the ADSR
controls. To achieve this feature you must have the Loop switch turned on and at least the Release control
different from zero enough. This is sufficient to effectively start the looping mode.
Attack = 0
Decay = 0
Sustain = max. Note that our EG, differently from other more classic designs, can loop with both Sustain to max
or minus, giving different results that you cannot obtain with other EGs
Release = not zero. This is necessary in this very analog structure. Loop has to have its "Release space". If not the
looping-EG remains steady because the point of the circuit that auto-triggers the loop is inhibited by too short
Release settings.
Starting with this configuration you can further modify the rate turning down the Sustain level, which causes a
fall of the CV emitted inside the given “Release space”, and an increase of the frequency rate.
So with the following settings you have great chances to activate the Loop fucntion:
Attack = 0
Decay = 0
Sustain = 0
Release = not zero
Attack settings
Note that the Attack is set to zero and everything goes fine. You can slightly turn it right to smooth a bit
the initial shape of the loop. But Attack is another tricky part of this circuit and it often turns off your
loop when in flat or more clockwise position, due to the "minimum Release space" previously argued. I mean
that Attack setting must always be short than Release setting for regular looping situations. Just know it.
When we chose to proceed with this design we knew this "problem". Simply we accept this limitation in order
to maintain the "unpredictable" character of this EG. It was a conscious choice, supported by the fact that this
"limit" can be avoided just reading the following note.
Perc-mode, smooth-difference
In Percussive mode only, Decay and Sustain don’t react exactly the same when increasing or decreasing
the loop rate. It's another practical consequence of our decision to implement this particular circuit design. In
particular Decay affects on the EG rate in a more intense way than Sustain, so you can prefer to play with it for
relatively-faster manipulations. In the Smooth and Slow position the behavior variations are unnoticeable.
Doubling Continuous Waves
Try to tune the EG audio-range loop congruently with your input audio waveform: both frequency and
amplitude modulation available here! Try some of this patches to inject very intense attitude to your timbre
via EG level pot.
This feature can give extremely interesting sound solutions, like hard beating timbres and some heavy
untuned manipulations. Use that to completely deconstruct your drone and bring out all the madness that
VERTICE can offer.
Need a stupid LFO?
We know that our EG design can lead to some disturbing reactions so, before take all things you have
under hands and crushing them into the wall please note that if you connect the Rear EG Out with the front
EG GATE In you'll obtain a regular, classic, boring, exactly-like-the-one-you-had-when-you-were-a-child LFO
(it deactivate Sust, Rel and Pushbutton).