Ritual Electronics Amnis Manuel utilisateur
Ritual Electronics
Gate IGate I
Gate IIGate II
Gate IIIGate III
Gate IVGate IV
Gate VGate V
Gate VIGate VI
Gate VIIGate VII
Gate VIIIGate VIII
Clock
Reset
Data
XOR
CV OddCV Odd
CV EvenCV Even
CV AllCV All
CV SlewCV Slew
Ritual
Electronics
Amnis
Amnis
2
Summary
03................Warranty
04................Installation
05................Overview
06................Controls
07................Shift Registers
08................Linear Feedback Shift Registers
09................Clock
10................Reset
11................Data
12................XOR
13................Outputs`
14................Expansion
15................Patch ideas
3
Amnis
Thank you for purchasing Ritual Electronics Amnis.
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-amnis
For any remarks and informations, contact us at:
For video demos and patch ideas check:
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.
4
Installation
Always turn your eurorack case off before plugging
or unplugging a module. Please pay attention to the
way you connect the bus board cable. Align the red
line on the cable with the “RED” text on the module.
Do not touch any electrical terminals when attaching any
Eurorack bus board cable.
Amnis uses a 10-pin cable for power. The bigger 16-pin
connector is used for expansions. See next page.
Ritual Electronics Amnis requires:
85mA on +12V (maximum recorded draw)
10mA on -12V
0mA on +5V
You will need 6HP of free space in your Eurorack case to
install Amnis. The module is 35mm deep.
5
Overview
Amnis is a shift register with a few tricks up its
sleeves. It can be used as a generative sequencer for
gates and CV, as a tunable digital noise source, as
a random gate and CV generator, as the center of a
chaotic system and more.
It needs two input signals to start doing its thing. A Clock
and some Data. Data can be pretty much any signals. Both
inputs are comparator-based.
From these two signals Amnis will generate 8 gate outputs,
always on the clock. From these gate outputs, it will
generate 3 staircase CVs and a slewed CV. With 8 gates
and 4 CV outputs it can be the heart of any patch.
Amnis has an XOR input for linear feedback. A shift register
with linear feedback is the core of the Rungler, the chaotic
core in Rob Hordijk’s Benjolin and Blippoo Box. With
Amnis you can recreate these type of behaviors with any
oscillators you have on hands. As it is fully patchable, you
can use the XOR for way more.
Amnis is compatible with the Turing Machine expanders
thanks to its expansion port at the back.
6
Gate Outputs
Individual gate outputs for each bit of
the shift register
0-8V range
Clock Input
Clocks the shift register
Comparator-based input
XOR Input
Second input of a dual input XOR gate
fed by the Data input
Comparator-based input
CV Odd
Staircase CV output resulting of all
odd gate outputs into an R-2R network
0-5V range
Reset Input
Empties the shift register when high
Comparator-based input, followed by a
gate to trigger converter
Data Input
Feeds values to the shift register
Comparator-based input
Amnis controls
Gate IGate I
Gate IIGate II
Gate IIIGate III
Gate IVGate IV
Gate VGate V
Gate VIGate VI
Gate VIIGate VII
Gate VIIIGate VIII
Clock
Reset
Data
XOR
CV OddCV Odd
CV EvenCV Even
CV AllCV All
CV SlewCV Slew
Ritual
Electronics
Amnis
CV Even
Staircase CV output resulting of all even
gate outputs into an R-2R network
0-5V range
CV All
Staircase CV output resulting of all
gate outputs into an R-2R network
0-5V range
CV Slew
Smooth CV output derived from the CV
all output
Approx. 0-5V range
7
Shift Registers
Digital shift registers were not created to be musical
devices. You can find a lot of them in computer
and digital devices were they can have a variety of
purposes. Despite being very simple it is as versatile
when used as part of a sound making system.
On each clock tick, the shift register reads the Data
input. If the Data input is High (signal above 2.5V)
the shift register will output a gate on Gate I output.
If the Data input is Low (signal below 2.5V) the shift
register won’t output a gate.
On the next clock tick, this process starts again. The
Data is analyzed and the result is outputed on Gate
I. At the same time the previous result gets shifted to
the next Gate output.
When the information reaches Gate VIII, it drops out
of the shift register and gets forgotten forever.
The Wikipedia article is not bad and worth reading
if you want to have a deeper understanding:
https://en.wikipedia.org/wiki/Shift_register
Do not mix up Shift Register and Analog Shift Register! The
latter is very different and while being very interesting in a
musical context, it is not what Amnis is. Amnis is a digital shift
register, it reads gates and outputs gates.
time
Gate I
Data
Clock
Gate II
Gate III
Gate IV
Gate V
Gate VI
Gate VII
Gate VIII
8
Linear Feedback Shift Registers
When coupled with a logic gate, shift registers can
turn into LFSRs or Linear Feeback Shift Registers. With
the use of feedback the shift register can be used to
generate pseudo-random sequences, digital noise
and more.
By connecting a Gate Output to the XOR Input of
Amnis, we create a feedback loop which influences
the result of the Data analysis. The Data signal will
be XORed against the the XOR Input. Note that
external signals can be used in the XOR Input.
A quick look at the Wikipedia article may confuse
you some more: https://en.wikipedia.org/wiki/
Linear-feedback_shift_register
In a musical context this means you can spice up the
sequences you get from the “classic” shift register.
You won’t get long non repeating random sequeces
with Amnis’ setup but using Gate VIII in the XOR
input you get a reasonnable amount of randomness.
By patching some more you can go very random
though. See the patch examples later.
time
Gate I
Data
XOR
Clock
Gate II
Gate III
Gate IV
Gate V
Gate VI
Gate VII
Gate VIII
9
Clock
The Clock system in Amnis deserves a bit of
explanation as it is a crucial element of the shift
register in a musical context.
The Clock and Data inputs need to be precisely
aligned to work as expected. If the Data signal is
received after the rising edge of the clock, it won’t
result in a High value at Gate I.
When Amnis Data source and the Clock originate
from the same digital source a problem can arise.
The digital nature of some sequencers for example
means the signal they output may have small timing
differences between them. The shift register does not
like this.
Amnis has a Clock delay built in to compensate for
this phenomenon. The trimmer on the bottom PCB is
used to shift the Clock forward in time. This way you
can align the Clock and the Data signals.
If you don’t plan on using Amnis this way, leave the
trimmer at 0 (fully CCW) as the delay compensation
reduces the maximum speed of the clock.
Let’s take a steady clock, 25% duty cycle. Let’s say we need to delay
it just a bit to align with the Data signal
As you move the threshold trimmer the beat will be delayed in time
The more you increase the threshold the more delayed your clock will
be.
10
Reset
The Reset Input can be used to create shorter
sequences or to empty the shift register bits
As all other inputs the Reset Input can be driven with
any signals thanks to its bult-in comparator.
It also features a gate to trigger convertor. This way
only the rising edge of the signal is used to reset
instead of pausing the shift register for the length of
the received gate.
Table des matières
