CONTIVE
SYNTHESIS

A synthesizer featuring constructive synthesis, powered by Flexion.

Struc Synthesizer
About

What is Struc?

Struc is a synthesizer plugin that unlocks the black box, letting you design evolving sound timbres at the very core. Push beyond classic waveforms to create the new classic. Say goodbye to static oscillators and build dynamic, multi-dimensional shapes.

It was created with a vision: make it accessible, make it yours — you can participate on all levels. It's free of charge — you don't pay for the synth. You only pay for presets. Everyone can be a preset creator and earn.

Sound Engine

Flexcurves

At the heart of Struc are Flexcurves — multi-dimensional morphing waveforms that go far beyond classic oscillators. Each point on a Flexcurve can be independently modulated, even at audio rates, unlocking a vast sonic universe.

Explore the synth
Struc sound engine showing Flexcurve oscillator editor
Interface

Canvas Editor

Design custom interfaces for your presets using the graphical page editor. Drag and drop knobs, sliders, and more — making Struc's advanced sound-design tools accessible to everyone.

Learn about Canvas
Struc canvas editor with drag-and-drop widget layout
Free to Play.
Pay for Presets.
Technology

Powered by Flexion

Struc is built on the Flexion SDK — an open framework for building community-powered creative applications. The technology that makes community features, content sharing, and value exchange possible.

Learn more

Ready to construct?

Download Struc and start exploring constructive synthesis.