Ritual Electronics Repression User manual

Ritual Electronics
Répression
In
Thrsh CV
Threshold
Ritual Electronics
Above Bipolar
Below Equal
Répression

2
Summary
04................Warranty
05................Installation
06................Overview
07................Controls
08.................Operations
11................Topology
12................Patch Ideas

3
Répression
n.f. /’re.pre.sjc/
“the mission was to assess the lev-
el of labour repression and human
rights violations”

4
Répression
Thank you for purchasing Ritual Electronics Répression.
Your module has been assembled with care in our
studio in Marseille, France.
You can find your module on Modulargrid:
https://www.modulargrid.net/e/ritual-electronics-repression
For any remarks and informations, contact us at:
[email protected]
For video demos and patch ideas check:
https://www.youtube.com/ritualelectronics
https://www.instagram.com/ritualelectronics
Limited warranty
Ritual Electronics warrants this product to be free of defects in
materials or construction for a period of one year from the date
of purchase.
Malfunction resulting from wrong power supply voltages, backwards
or reversed eurorack bus board cable connection, abuse of the
product or any other causes determined by Ritual Electronics to be
the fault of the user are not covered by this warranty, and normal
service rates will apply.
During the warranty period, any defective products will be repaired
or replaced, at the option of Ritual Electronics, on a return-to-Ritual
Electronics basis with the customer paying the transit cost to Ritual
Electronics. The return of your module is on us.
Ritual Electronics implies and accepts no responsibility for harm to
person or apparatus caused through operation of this product.

5
Installation
Always turn your eurorack case off before plugging
or unplugging a module.
Do not touch any electrical terminals when attaching any
Eurorack bus board cable.
As the 1U series does not have a shrouded header,
so remember:
RED STRIPE DOWN
Ritual Electronics Guillotine requires:
53mA on +12V
26mA on -12V
0mA on +5V
You will need 12HP of free space in your Eurorack case to
install Krach. The module is 35mm deep.
Répression is a 1U module, you will need a 1U rack space -
Intellijel format.

6
Overview
Répression is a feature packed CV controllable
comparator.
Répression compares two signals. One at the Input. The
other defined by the threshold pot and the CV Thrsh which is
added to the pot. It outputs 4 signals based on the result of the
operation.
Above is high if the Input is above the threshold.
Below is high if the Input is below the threshold.
Equal outputs a trigger when the input and threshold values
are the same.
Bipolar is a +/-5V version of the Above output. Very useful
when using the comparator for audio duties. I.e. PWM
generator, complex oscillator…
The Threshold knob has a +/- 8.2V range

7
Répression controls
Input
Input goes to the + terminal of the
comparator
Bipolar Out
+/- 5V (10Vpp) version of the
Above output
Above Out
Sends a gate when the input is
above the threshold
Threshold CV
Threshold CV is added to the
Threshold potentiometer
It goes to the - terminal of the
comparator
Equal Out
Sends a trigger when Input =
Threshold
Equal Out
Sends a gate when the input is
below the threshold
Threshold potentiometer
Sets the threshold from -8.2V to
+8.2V
No center detent for finer settings
around 0V
Répression
In
Thrsh CV
Threshold
Ritual Electronics
Above Bipolar
Below Equal

8
Operations
Threshold
Input
Below Above
Equal Equal Equal Equal
Above
Below Below
Fixed threshold
Here we have a steady threshold defined by the Threshold
potentiometer and a triangle signal plugged into Répression’s
Input.
Répression’s outputs will change state according to the
comparison of the input against the threshold voltage.

9
Operations
Threshold
Input
Below Above
Equal Equal Equal Equal
Above
Below Below
CV controlled threshold
Once a fixed threshold has been defined with the
potentiometer a good way to introduce some jitter is to have
an attenuated CV in the Thrsh CV input to have the Threshold
“dance around” the potentiometer offset.
This is only one way to think about CV controlled Threshold.
Try using stepped sequences in the Thrsh CV.

10
Operations
Comparing two signals
If you set the threshold potentiometer to 0V (12 o’clock) the
Thrsh CV inputs will be passed directly to the second input of
the comparator with no offset.
This is useful to compare two signals against each other.
Threshold
Input
Below Below Below BelowAbove >Above
Equal Equal Equal Equal Equal= =

11
Topology
The controls on Répression have names like “in”, “threshold” or
“above” which make them easy to understand. But a comparator
can do more than just comparing let’s take a look at the guts of the
module.
The input is connected to the + terminal of an opamp.
The CV Thrsh is going to the - terminal of the op amp.
The threshold pot is summed to the CV Thrsh and goes to the - terminal
too.
Input
Output
CV Thrsh
Threshold
-8.2V +8.2V

12
Patch ideas
Patch #1 - Fuzz amp
First easy unconventional use of the comparator would be a
fuzz amp. If you set the threshold to 0V even the tiniest signal
crossing 0V will be turned into a 10Vpp square output at the
Bipolar jack.
Bonus: the Equal output fires twice per cycle. Meaning you
have an octave up there. Just mix it the Bipolar signal for
gorgeous lead tones.
Patch notes
Instrument ------------ Répression, In
Répression, Bipolar out ------------ Mixer, In
Répression, Equal out ------------ Mixer, In
Répression
In
Thrsh CV
Threshold
Ritual Electronics
Above Bipolar
Below Equal
Guillotine
In/Out
In/Out
Réseaux
Out/In I Out/In II Out/In III Out/In IV
Out/In I Out/In II Out/In III Out/In IV

13
Patch ideas
Patch #2 - Fireplace & random gates
Use a noise output and process it with Répression.
Start with a high threshold and back it down slowly to hear
the first crackles of the fire. This technic can work for audio or
to generate random gates.
Use an LFO or enveloppe to change the density of the gates or
he blaze size
Patch notes
Krach, Noise out ------------ Répression, In
Répression, Bipolar out ------------ Audio / Gates
LFO, out ------------ Comparator, CV
White Hiss
Pink Rumble
Krach
Répression
In
Thrsh CV
Threshold
Ritual Electronics
Above Bipolar
Below Equal
Anima
Attack
Curve
Decay
_+
_+_+
_+_+_+
Attack
Curve
Decay
_+
Unipolar
Bipolar
Attack I Curve I
Out IOut IEOC IEOC I
Decay I
Gate I 1V/Oct I
Attack II Curve II
Out IIOut IIEOC IIEOC II
Decay II
Gate II 1V/Oct II

14
Patch ideas
Patch #3 - Oscillator
Turn your comparator into an interesting oscillator by patching
it to a filter. No need for resonance here, the feedback
patching is doing the trick. Adjust the feedback until you get to
a good sound.
Try an other oscillator modulating the In (+) input for sync-
like sounds. You may need to run the modulation through an
attenuator/offset to get the range needed for the task.
Patch notes
Filter, Out ------------ Répression, CV Thrsh
Répression, Bipolar out ------------ Filter, In
Oscillator, Out ------------ Attenuator, In
Attenuator, Out ------------ Répression, In
Anima
Attack
Curve
Decay
_+
_+_+
_+_+_+
Attack
Curve
Decay
_+
Unipolar
Bipolar
Attack I Curve I
Out I
Out I
EOC I
EOC I
Decay I
Gate I 1V/Oct I
Attack II Curve II
Out II
Out II
EOC II
EOC II
Decay II
Gate II 1V/Oct II
_+ _+
_+
Out
Out
1V/OctFreq CVIn
Répression
In
Thrsh CV
Threshold
Ritual Electronics
Above Bipolar
Below Equal
Guillotine
In/Out
In/Out
Réseaux
Out/In I Out/In II Out/In III Out/In IV
Out/In I Out/In II Out/In III Out/In IV