Modulation
Lorenz
A Lorenz attractor — the famous “butterfly” system from chaos theory. Three related signals that wander forever without repeating.
Learn about it in Melody & chance: chords, arps and generative patches
How it works
The module solves the Lorenz equations continuously. Speed sets how fast it runs: low values give slow, organic modulation; very high values push it into audio range for gritty noise-tones. Rho changes the character — near 28 is the classic butterfly; other values get calmer or wilder.
Inputs
| SPEED | Adds to Speed (+1.0 = +200). Patch an envelope here to make it rush on each note. |
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Outputs
| X | Flips between the two wings, roughly −1 to +1. |
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| Y | Similar to X but leads it slightly. |
| Z | Bounces around the middle; smoother. |
Knobs and switches
| Speed | How fast the system evolves. |
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| Rho | Shape of the attractor. |
Patches to try
- X → Scope A, Z → Scope B, Scope in X/Y mode: watch the butterfly.
- X → Filter CV for evolving, never-repeating sweeps.
Lessons that use the Lorenz
Each one opens as a working patch in the synth.
Words to know
- Modulation — Using one signal to change another over time.