REAGENTE is a free experimental synthesizer from Creature From The Black that uses reaction-diffusion systems as the foundation of its sound engine. It is an eight-voice polyphonic additive synth in which spatial patterns, imported images and even video can become spectral data.
The concept is ambitious, but the musical idea is easy to understand: instead of drawing a waveform directly, REAGENTE generates or reads evolving geometry and maps that information into partials. The visual structure becomes timbre.
Free / pay what you want: REAGENTE is distributed from the official Creature From The Black Ko-fi shop for Windows VST3 and standalone use.
What Is Reaction-Diffusion Synthesis?
Reaction-diffusion models simulate how substances spread and interact. They are famous for producing organic patterns such as spots, stripes, spirals and cellular structures. REAGENTE turns these changing patterns into spectral information, creating timbres that can evolve in ways conventional oscillators do not.
The synth includes multiple simulation families such as Gray-Scott, Waves, Fibres, Spirals and Vortices. Their geometry changes over time, and that movement is reflected in the audio spectrum.
At a Glance
- 8-voice polyphonic additive synthesis
- Two reaction-diffusion engines
- Gray-Scott, Waves, Fibres, Spirals and Vortices models
- Harmonic, noise, subharmonic and ANS-style modes
- Import images and video
- FM, cross-modulation and feedback
- Resonant-string section
- Ladder filter and modulation matrix
- Echo, Dattorro-style reverb and ensemble
- 45 factory presets
Two Visual Engines
Using two reaction-diffusion engines gives the synth more than one evolving spectral source. Depending on the mode, the engines can provide harmonic structures, noisy energy or subharmonic material. Their interaction makes the instrument useful for pads, drones, digital choirs, metallic keys and abstract textures.
The ANS-inspired mode is particularly interesting because it evokes the concept of optical sound: visual information is scanned and translated into spectral content. That opens the door to deliberately designing images for sound rather than treating graphics as decoration.
Importing Images and Video
REAGENTE can use imported images and videos as source material. This makes the synth attractive to audiovisual artists and sound designers who want a direct relationship between visual content and timbre. A high-contrast image can emphasize particular spectral regions, while moving video introduces continuous changes over time.
This is also a practical resampling technique. Load visual material, record a long performance, then edit the most interesting moments into samples for another instrument.
FM, Cross-Modulation and Feedback
Once the reaction-diffusion engines have created a spectrum, REAGENTE can push it further with FM, cross-modulation and feedback. These processes increase harmonic density and can move the synth from smooth evolving pads into aggressive digital territory.
A resonant-string section and ladder-style filter offer contrasting colours. The resonator can emphasize pitched, string-like behaviour, while filtering can tame complex spectra and make patches easier to position in a mix.
Effects and Modulation
The modulation matrix lets evolving sources control other parameters, making slow autonomous motion one of the instrument’s strengths. The effects section includes echo, ensemble and a Dattorro-style reverb, well suited to the spacious material the synth naturally produces.
Workflow idea: Build a relatively simple harmonic patch first, then automate the reaction-diffusion parameters. Adding feedback and reverb last keeps the movement understandable and prevents every preset from turning into a beautiful green fog.
Best Uses
REAGENTE is especially suited to ambient, experimental electronics, cinematic scoring, industrial sound design and game audio. Because it is polyphonic, it can also function as a playable instrument rather than only as a texture generator. Chords reveal how the spectral engine behaves across pitch and can create unusual pad and key sounds.
Video Demo
This official Creature From The Black video demonstrates REAGENTE and its reaction-diffusion synthesis engine.
Compatibility
- Format: VST3
- OS: Windows 64-bit
- Standalone: Included
- Voices: 8
- Presets: 45 factory presets
- Price: Free / pay what you want
How to Download REAGENTE
- Visit the official Creature From The Black Ko-fi shop.
- Open the REAGENTE product.
- Choose the offered pay-what-you-want price.
- Download and install the Windows VST3.
- Rescan your DAW if required.
Final Verdict
REAGENTE is a genuinely unusual free synth. Reaction-diffusion graphics are not simply used as a visualizer; they are part of the synthesis model itself. Combined with image/video import, additive synthesis, resonators, modulation and effects, the instrument offers a deep source of original material.
For producers bored with choosing between saw and square waves, REAGENTE responds with spirals, vortices and simulated chemistry. Fair enough.
Download REAGENTE for Free
