Side Brain | Lowfi Heat with Roar’s Dispersion Filter

Roar’s dispersion filter gets modulated with Simplex noise for lo-fi pitch drift, while filtered noise injection adds dusty character. A subtle but effective way to add warmth and movement.

Sculpt dusty textures and warbly tones inside Ableton Live 12.2

Roar’s new dispersion filter, tucked inside its multiband saturation engine, opens up deeply musical sound design possibilities—especially for lowfi processing. In this walkthrough, Side Brain transforms basic electric piano chords into a gritty, pitch-warped layer perfect for laid-back beats or hazy textures.

What’s Happening in the Rack

• Routing Mode: Roar is set to serial mode for stacked saturation stages, allowing for more layered character.
• Stage 1 – Dispersion Filter Modulation: The “shaper” saturation type is paired with the dispersion filter. Its pitch-reactive nature is randomized via Simplex noise, creating subtle micro-pitch drift and movement.
• Stage 2 – Noise Injection: Additional grit is added using Roar’s built-in noise generator. The final tone is smoothed with a lowpass filter to tame harshness while maintaining character.

Why It Works

• The dispersion filter modulates pitch and phase in a way that mimics tape warble or old hardware drift.
• Simplex noise modulation introduces organic instability without sounding synthetic.
• Injecting and filtering noise gives a controlled dust layer, enhancing the vibe without overwhelming the sound.