Filth Assembly
Independent audio tools

Sound
decisions.

Experimental instruments.
Open source.

Explore modules GitHub
A wild-eyed monster factory overflowing with acid-green slime, above the Filth Assembly name

01 — The collection

The
modules

Instruments
for strange
signals.

Contour module showing its animated contour map, knobs, and XY outputs
FA—001 / CONTOURVCV RACK 2

Terrain-driven modulation

Contour

Explore a landscape of evolving modulation. Four moving sources trace paths through a shifting contour map, turning terrain into flowing XY control signals.

Explore Contour Source code
Fugitive module showing its two-dimensional chase playground, controls, and outputs
FA—002 / FUGITIVEVCV RACK 2

Pursuit-driven modulation

Fugitive

Let the chase shape your patch. Cops pursue fugitives across a two-dimensional playground, generating XY modulation from their movement. A little pursuit. A lot of unexpected turns.

Explore Fugitive Source code
Orbitals module showing its atomic orbital visualization, selectors, and controls
FA—003 / ORBITALSVCV RACK 2

Atomic orbital oscillator

Orbitals

Explore the sound of atomic orbitals. An experimental oscillator that traces paths through mathematical hydrogen wavefunctions, turning their shapes into sound—from hollow tones to strange, nasal textures.

Explore Orbitals Source code

Behind the noise

A small factory.
Strange output.

Filth Assembly is an independent audio project by Ville Väisänen, built around curiosity, motion, and unexpected sound.

Contour is free and open source. Take a look inside, make something with it, or help shape what comes next.

Inside the factory