Tags: Logic module

Notes: Buchla's legendary function generator in an affordable Eurorack module. Four generators can be linked into two pairs, with Transient, Sustained, and Cyclic modes to create envelopes, LFOs and modulation signals.

Supplier's Notes:
The 281t Quad Function Generator comprises four function generators organized in two pairs. All four generators can operate independently or can be linked in pairs to generate more complex output voltages.

Cycle jack enables the cycling of the corresponding function generator using a gate signal.

Trigger button enables the manual triggering of the function generators.

A switch selects one of three modes: Transient, Sustained, and Cyclic.

Upon receiving a pulse, a generator's output voltage ramps up to 10V at a rate determined by the sum of an applied control voltage and the setting of the attack time knob. When in Sustained mode, the voltage will stay high as long as the input pulse is maintained; when not in the Sustained mode, or when the input pulse terminates, the output ramps down to 0V at a rate determined by the sum of the decay cv in and the setting of the decay knob. At the end of the Decay segment, a transient pulse appears at the pulse output. If the 281t is in Cyclic mode, the cycle now repeats.

In the Quadrature mode, generators A and B (or C and D) operate in tandem with their functions shifted by ninety degrees in relation to each other.

Size: 28HP
Depth: 32mm
Power: +12V 160mA / -12V 55mA

Notes: Part of Xaoc's Leibniz Binary Subsystem, the updated Drezno ADC/DAC module builds on the original with higher resolution converters, allowing you to use it for pitch quantisation.

Supplier's Notes:
Drezno II is an improved version of the original Drezno module. It is an essential member of the 8-bit Xaoc Devices Leibniz Binary Subsystem. The Leibniz subsystem is a family of modules that operate on 8 binary (two-state, on/off) signals. These signals are arranged as 8 bits of digital data and may represent analogue signals and voltages, or they may be whatever you want them to be (clocks, gates, rhythms, etc.).

Drezno features an ADC (analogue-to-digital-converter) and DAC (digital-to-analogue-converter), allowing it to act as an analog front-end of the system. In other words, Drezno allows one to convert analogue signals and CVs into digital numbers, as well as to obtain analogue signals back from some other digital numbers (or 8 binary signals). Between these two conversions there is a whole universe of digital shenanigans waiting to happen resulting in all kinds of signal transformations and modulations.

Both (ADC and DAC) sections of Drezno can work independently, or they can be linked. Input and output range of analogue signals may be adjusted using Gain and Offset sliders. Individual bit outputs (for the ADC) and inputs (DAC) allow for extensive cross-patching and the creation of complex waveforms and rhythms. A very fast clock (up to 2MHz) at which the conversions are performed may be replaced with any external clock (for each section separately).

Compared to its predecessor, Drezno II uses new converters of much higher resolution which results in much lower noise floor and higher accuracy. The lower bits are much more stable than before. It is easy now to use Drezno for quantizing pitch voltages with accurate results with 128 or 256 semitone steps. Potentiometer ranges are factory calibrated for precise chromatic scale. A new switch on the front panel allows the user to select the calibrated range of 10Vpp or 20Vpp, so that the lowest bit or the second bit correspond to 1 semitone.

Technical details

Eurorack synth compatible
12hp, skiff friendly
Current draw: +80mA/-50mA
Reverse power protection

Notes: Neat little logic and gate processor offering various modes and simple, effective processing power in a small format. Updated version adds state-based logic functions and more.

Supplier's notes:
Voltage-controlled logic and gate processor.

Built upon the foundations of its acclaimed predecessor, this new version drastically expands the feature set within the same footprint.

All the original goodies are still there, now enriched by a full list of state-based logic functions including a delay line.

Faster processing allows perfect handling of audio signals.

User editable settings are stored in non-volatile memory.

With its versatility and features never seen before, the Klavis Logica XT will arouse your creativity and bring inventiveness to your soundscapes.

Notes: A serious trigger sequencer for generating complex, multi-layered rhythms. Eight channels of Euclidean pattern generation meet probability, modulation and CV control for real depth and power.

Supplier's Notes:
Constellation is all about rhythm. It is an 8 channel pattern generator that works by combining multiple dense and sparse patterns to create long, complex and musically interesting trigger and gate rhythms. Constellation takes a "parametric" approach to rhythm - there is no explicit step sequencing on the module, rather the rhythms are defined by euclidean (and more) parameters that build the rhythm mathematically.

Constellation aims to evolve the concept of euclidean rhythms far beyond the useful but repetitive patterns we often think of when we hear the term "euclidean rhythm". This is accomplished by by combining up to 8 individual euclidean patterns of different lengths and density. Each pattern may provide only a small component of the final output, but together create immensely musical and varied rhythmic material over a very long time frame - up to 999 steps! If each of those steps are 1/16 note in length at 120 bpm, that's a full 2 minutes of explicitly defined, yet non repeating rhythmic material.

In addition, Constellation's parametric approach allows any of these parameters to be modulated with CV through one of 8 freely assignable CV inputs. CV modulation introduces further ability for Constellation's rhythmic output to vary over time. Paired with a Maestro or Navigators, hours of interesting morphing rhythms are possible without the need for tons of step programming or the uncontrollable chaos of a purely generative approach.

When writing music, rhythmic interest is often built through the combination of repeating and non repeating elements that work together to anchor the overall feel but also keep the ear free from boredom over the duration of the piece. Constellation provides a unique set of tools to accomplish this goal and achieve rhythms that are intentional, unexpected and exciting to use as the foundation of your compositions.

28hp, 25mm deep
75mA +12, 18mA -12

Notes: The CMOS Party Logic, by Blue Lantern, is a readily patchable boolean logic module just waiting for a square wave or clock signal into its corresponding A and B inputs in order to generate a variety of output signals. The module's AND, NAND, NOR, XOR, and OR outputs ensure a variety of potential combinations.

Additionally, the CMOS Party Logic features extremely low latency and is capable of operating at audio rate.

Notes: Bytom is a simple, yet very useful, utility module that allows you to combine various trigger/gate signal sources to obtain interesting rhythmic events? useful for sequencing, modulation and patch automation purposes. It can also be used for summing control voltages of a positive polarity. The module consists of three independent sections. Each one can process up to four signals fed to its inputs. All three sections can be normalled into one 12-signal combination via the manual switches. Either the upper or lower section can be combined with the middle section to form an 8-signal combination. Summed signals of two or three sections will appear on the middle section's output socket. The individual outs on upper and lower units remain active even when combined with the middle section.

Features:
Three independent trigger/gate 4:1 combiner sections (OR gate)
Any combiner section can be normalled to any other
Basic CV summing

Details
Eurorack standard synthesizer module, fully Doepfer compatible
6 hp wide
+12/-12V powered
Current draw: 10 mA
Backward power protection
Skiff friendly (25 mm)

Notes: Gera is a component of the Leibniz subsystem that allows masking individual bits of the digital data by the use of logical AND operation.

It features 8 individual gate inputs that affect the individual bits of data, as well as 8 illuminated tact switches for manual inverting of each control input. When connected to Drezno that is processing a waveform or voltage, masking of individual bits yields various forms of quantization. However, Gera can function on its own. The AND operation is a basic building block for sequence automation, chaos and rhythm generation, and various computer-like modular patches.

Bit processing logic in Gera is hardware based, hence there is virtually no latency, and the binary signals may change at extreme rates.

Main features:

Logical AND operation on Leibniz data
Masking of individual bits controlled manually and by gate signals
Visual indication by illuminated buttons
6HP
30 mm depth (including ribbon cable brackets)
- +12V: +45mA / -12V: 0mA / +5V: 0mA

Notes: The MASTER18 is a very flexible generic CV processor.

You can think of the MASTER18 as a smaller and cheaper version of the DROID MASTER without CV inputs and LEDs, but with an integrated USB and MIDI, six additional gate jacks, two of which are inputs and four are outputs.

Details:

It has 8 CV output jacks with a voltage range from -10 V to +10 V, driven by highly accurate low jitter 16 bit DA converters:
2 gate inputs switching at 0.1 V
4 gate outputs switching between 0 V and 5 V
2 MIDI interfaces via MIDI standard B (mini jack)
MicroSD card reader and a button for reloading the MicroSD card
USB C to access the SD card from your computer or to send/receive MIDI MASTER18 comes with two interesting bonus features:
It can be connected to the Sinfonion as a follower of the Harmonic Sync.
It has an integrated tuning device for VCOs (can measure their frequency).

The MASTER18 is a good choice if you intend to just create CVs and don't need to process incoming CVs. It's perfect for building sequencers and MIDI to CV converters. MASTER18 can do almost any CV task you can imagine, such as sequencing, melody generation, slew limiting, quantizing, switching, mixing, working on clocks and triggers, creating envelopes and LFO or other fancy voltages, or any combination of these at the same time. While doing this, is very precise both in voltage and in timing.

You can attach several different DROID controller modules, such as the E4, the P2B8, the P10, the B32, the P4B2 or the M4 in order to get direct hands on access to all parameters and values of these patches.

Easily create your desired DROID patch utilizing our simple and easy-to-use editor with built in tutorials - the DROID Forge. It is available for Windows and Mac (both Apple Silicon and Intel).

The file created with the DROID Forge is a simple text file named "droid.ini" and needs to be loaded on the micro SD card that goes into the MASTER18.

Notes: SkipLog, a probability processor with sequence capturing and looping features, along a range of other versatile functions waiting to be explored.

SkipLog is a 3-channel rhythmic probability processor designed for inventive rhythmic exploration in modular setups. Introduce unpredictable rhythmic possibilitis to your creative flow.
SkipLog's basic operation is simple: when a trigger or gate is received at one of its three channels' inputs, the same channel’s Probability knob allows you to control the likelihood of these triggers or gates reaching the output. This inputs are internally connected .

SkipLog continuously captures the binary outcomes of its use, storing them for potential sequences. Activate the Loop function to break from pattern creation and loop the recorded sequences. Individual Loop Length knobs for each channel allow adjustment of the loop sizefrom 1 to 16 or 32 steps (as selected on the back), providing evolving rhythmic patterns.

To fine-tune your arrangement, SkipLog introduces functions like Mute for real-time channel silencing, Inv for signal inversion, and Choke for establishing channel priorities. Lastly, the G/T (Gate/Trigger) Mode enables users to specify whether the channel output is a gate or a trigger.

Dimensions
8 HP
33 mm deep

Current Draw
100 mA +12V
22 mA -12V

Notes: Identical to the OR2x4 module in full size, but shrunk to 1/3 size. It contains two logical OR functions with four inputs each; with a switch they can be linked to an 8-input mode. Useful for "summing" gate / trigger signals from different sources.

Please note: These micro modules need a carrier, like the uBASE module. They cannot be mounted directly into an AE case.