digital
synthesizer
for creating live
musical systems
and sound exploration
Musical logic instead of technical logic
Parameters should reflect the way musicians think about rhythm, pitch, and timbre. If something has musical meaning, it should be controlled in a musical way.
Interaction instead of independent voices
Music emerges from the relationships between sounds. That’s why tracks, sequencers, and modulators can freely influence one another, forming a single musical system.
Constraints create expressiveness
A great instrument doesn’t try to provide every possible solution. Thoughtfully designed constraints help you discover musical ideas more quickly and reveal new ways of achieving the desired result.
An interface at your fingertips
The creative process shouldn’t be interrupted by searching for functions. The interface is designed to be direct and consistent, so your attention stays focused on the music rather than the instrument.
It is far more difficult to ensure that each one opens up a new dimension in the sound space, rather than simply duplicating existing capabilities.
Sound
Engine
The system opens up a vast realm of possibilities. Each module can be utilized in various ways: a wavefolder can generate noise, a comb filter can function as a waveshaper, and oscillators can switch between different sound generation principles.
However, Kaleidoscope does not attempt to incorporate every possible feature simultaneously. Its architecture always leaves room for choice—whether to use hard sync or a wavefolder, a low-pass or high-pass filter, a resonator or a delay line.
These constraints make each element more expressive, transforming the sound creation process into a search for solutions rather than a mere cycling through endless options.
Kaleidoscope has on each track:
- flexible oscillator for creating huge variety of waveforms
- multiplier in wavefolder/hard-sync mode capable of synthesizing even noise
- Low Pass/High Pass filter with resonance
- comb filter for creating echoes and resonators
- overdrive with variable characteristic curvature
- FM mixer-router
- audio mixer-router
And all this is determined by 12 parameters
The Kaleidoscope oscillator can create very complex waveforms that can flow smoothly into one another.
Control the tilt of the asymmetrical triangle.
Control the PWM shape of the square.
Put the saw through one of the wavefolder modes.
Use amplitude folding to add aggression to the sound.
Use phase folding to create a sub-oscillator or hardsync.
Filter with resonance.
To make it easy to play on resonance, the filter cutoff frequencies are set to the frequencies of MIDI notes.
Comb filter.
Can work as a resonator, cutting out some of the harmonics.
Can work as a delay line to create volume.
Kaleidoscope has an overdrive module, which is also an element of additive synthesis.
Kaleidoscope overdrive is located either before the comb filter or after it. In the second case, the overdrive will create a very powerful and destructive effect.
In Kaleidoscope, you do not control the gain of the signal entering the overdrive with a fixed characteristic, as is done in most other devices.
You control the curvature of the overdrive characteristic.
At small values, the overdrive provides soft saturation of the signal.
At large values, it works as a hard fuzz, turning any incoming signal into a square one.
The delay lengths of the Kaleidoscope comb filter are set to MIDI note periods.
This allows the use of physical modeling methods for systems inside a digital waveguide.
Each Kaleidoscope track has an input for frequency modulation with controlled attenuation.
The modulating signal can be the sum of any combination of Kaleidoscope tracks.
This can be used as a regular 4 operator fm synthesis.
Or it can be used as an unusual way to distort sound.
Every synthesizer begins with sound.
But music is born when that sound changes over time. It is the movement of parameters that transforms a collection of sound modules into a living instrument.
It is not a standalone module with preset generation algorithms, but rather a combination of envelopes and a set of methods for interacting with and modifying them.
This enables the creation of evolving patterns and melodies without the need to manually program every note or step value.
Consequently, the sequencer functions as a creative melodic and rhythmic tool that helps generate new musical ideas. It can operate independently or alongside external MIDI keyboards and sequencers, acting as a highly advanced arpeggiator.
The 16-step modulator with adjustable length can function as an arpeggiator or a sequencer.
It is not tied to a clock; the transition to the next step is triggered by the cycle of the amplitude or modulation envelope.
Sequence values can be entered manually or generated automatically with a controllable degree of randomness.
Like any other modulator, this one can modulate any parameter of the Kaleidoscope.
The Volume and Modulation envelopes are designed for cyclic operation and tight integration with musical timing.
Instead of independent attack and decay settings, a single PERIOD parameter is used alongside a SHAPE setting that determines the ratio between these phases.
This approach allows the envelope's speed to be controlled as a musical value, preserving its character even when the duration changes.
The period is linked to the current track's BPM and can be set using familiar musical note values: eighth notes, sixteenth notes, triplets, quintuplets, dotted notes, and other rhythmic figures.
Like pitch, the period follows an octave-based structure: every doubling or halving of the duration corresponds to 12 encoder steps. This makes it easy to quickly find harmonious rhythmic relationships and create synchronized modulations.
At the end of the attack-decay cycle, the Amplitude Envelope and Modulation Envelope generate a trigger. This trigger can be sent to any other envelope to launch it.
If an envelope triggers itself, it effectively becomes a Low-Frequency Oscillator (LFO).
If envelope triggering is disabled, the envelope operates in standard ADSR mode.
Each envelope features an 8-step pattern mask with variable length.
It is somewhat similar to a step sequencer, but it is more of a highly unusual way to create envelopes with complex temporal behavior while you hold them.
The pattern and its length are parameters, so they can be modulated.
The oscillator can quantize the incoming frequency control signal according to a selected scale:
DIAT, nMAJ, nMIN, PENT, HEXA, BLUE, JUST, or OFF.
The SCALE parameter controls this selection.
Combining this with modulator quantization makes it possible to generate melodies that stay within the chosen scale.
The output of the modulation envelope can be quantized—that is, converted from a continuous signal into a stepped one.
This is useful, for instance, for creating arpeggios—including rhythmic ones, where you essentially cycle through different rhythms.
The arpeggio characteristics depend on the envelope's shape and period, as well as the quantization setting.
The shape, period, and even the quantization value itself can be modulated.
Arpeggios can be created not only using the oscillator frequency but also the resonant filter frequency, the comb filter, and the envelope period.
Special quantization modes were added in firmware versions >v0.77.
vENV turns the modulation envelope destination into a copy of the amplitude envelope output.
mSEQ turns the modulation envelope destination into a 0:1 logic signal based on the current state of the modulation envelope's pattern mask.
Sample & Hold (S&H): the modulation envelope destination signal changes only at the EOC (End of Cycle) of the cyclic amplitude envelope.
vFOL turns the modulation envelope destination into an envelope follower, allowing audio energy to serve as a control parameter.
Подключите внешнюю клавиатуру или секвенсор по MIDI, чтобы играть по нотам на генеративном секвенсоре.
Генеративный секвенсор Калейдоскопа работает как надстройка системы управления и не конфликтует с входящими MIDI сообщениями.
Также внешний контроллер добавляет несколько источников модуляции:
- keytrack с управляемой настройкой роста и спада. Это позволяет создавать параметрический глайд
- aftertouch с управляемой настройкой роста и спада
- velocity с управляемой настройкой роста и спада. Это позволяет использовать его как дополнительную огибающую модуляции
- modulation wheel
- pitch bend
matrix
Another familiar example is sidechaining: for instance, the kick drum ducks the bass volume to carve out space for itself in the mix.
In Kaleidoscope, the distinction between these approaches vanishes: any modulation source can control any parameter of any track. There are no longer "internal" or "external" parameters—only processes capable of interacting with one another. This transforms independent voices into a unified musical system.
You can combine modulators in any way you like:
Assign multiple modulators to a single parameter.
Modulate envelope durations, pattern masks, quantization settings, and much more.
Create feedback loops and modulation chains. Negative feedback stabilizes behavior, while positive feedback destabilizes it, injecting life into the sound.
As a result, the object of modulation becomes not just the sound itself, but the very logic of its evolution. This approach is more commonly found in modular systems than in standalone synthesizers.
ADSR Volume Envelope
Has 2 destinations.
AD Modulation Envelope
Has 2 destinations.
Each modulation envelope destination has an independent quantization setting, including envelope follower and sample & hold.
16-step modulator with adjustable length
Has 1 destination.
Velocity Envelope
Has 1 destination.
Kaleidoscope smooths the MIDI Velocity signal, converting it into an Attack-Hold-Release envelope.
Channel Aftertouch Envelope
Has 1 destination.
Kaleidoscope smooths the MIDI Channel Aftertouch signal, converting it into an Attack-Hold-Release envelope.
Smoothed Keytrack
Has 1 destination.
Kaleidoscope smooths the MIDI Note signal value, allowing it to be used to modulate any available parameter.
Mod Wheel and Pitch Bend
Each has 1 destination.
List of modulatable track parameters
Sound engine
MID, MULT, MIX, DRIVE, FILT, RESONANCE, DELAY, FEEDBACK, PITCH, GLIDE, VOLUME, FMVOL, FMSRC
Control system
volenvSHAPE, volenvPERIOD, volenvMODDEPTH1, volenvMODDEPTH2, volenvPATTERN, volenvPATTERNLENGTH, modenvSHAPE, modenvPERIOD, modenvMODDEPTH1, modenvMODDEPTH2, modenvPATTERN, modenvPATTERNLENGTH, modenvQUANTIZE1, modenvQUANTIZE2, volenvRELEASE
Instead of relying on randomization, automation, or sidechain compression, the two voices constantly respond to each other through a network of feedback and modulation.
You'll see how to:
- Design the kick and bass sounds
- Program the rhythmic patterns
- Connect the instruments so they influence each other
- Explore how simple interaction rules create evolving grooves
at your fingertips
Each parameter is directly accessible from its own page.
The screen always displays the parameter's actual value, accounting for all active modulations.
Modulation sources are displayed alongside the parameter, so you can not only hear the change in sound but also immediately see exactly which signal is causing it.
The page selector allows you to choose the desired page in a single action. Your fingers always rest on the same encoders and sensors; only the parameters they control change.
Over time, the pages cease to feel like separate screens and instead feel like different areas of a single, large instrument that you can navigate between instantly.
the size
of a postcard
Explore soundscapes,
then save, load, and share
your results with friends.
Kaleidoscope features 128 slots for saving presets.
Presets can be exported from the device's memory to a computer.
Presets can be loaded from a computer onto the device.
- Power
- Firmware updates
- Preset import/export
- In
- Out
- 4 mono outputs grouped into two stereo TRS mini-jacks. These can output individual tracks or a mix of any combination of tracks.
You pay.
We send the device.
Write to me if the acquaintance was successful.
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-
Inst: @vadjuseVarious project news, event announcements, and use cases of our devices are published here. -
YouTube: @vadjuseAll tutorials and examples of using our instruments are published here. -
Telegram: @kaleidoscopesynthHere you can write to support. Or ask questions about using our devices. There is also a chat room where you can communicate with like-minded people. -
Reddit: @kaleidoscopeSynthHere you can publish your creativity for all to see. You can also ask questions, discuss topics and share experiences, as well as your own opinions. -
GitHub: @vadjuseOne day, SDKs for developing your own firmware for Kaleidoscope will appear here
- Vadik MinkinConcept. Code. Circuit design. Construction.Having developed several devices for SOMA,
I decided to move on.
It took several years to create an instrument that would combine the compact design, flexibility of modular synthesis, and ease of control of modern multitimbral synthesizers.
control system features
intro
