This card adds spatial dimension, modulation, and temporal dynamics to your bubble sounds.
Spatial Effects
| Knob | What It Does |
|---|
| Topology | Foam topology simulation — models how bubbles interact in a foam structure, including merging and rearrangement events. |
| Width | Stereo spread of the bubble field. At 0, everything is mono-centered. At 100%, bubbles are distributed across the full stereo field. |
| Mirror Depth | Simulates acoustic reflection from a water surface. Creates comb-filtering and depth perception. |
Topology enables experimental foam physics simulation including coarsening dynamics and structural rearrangement events. While it creates interesting evolving textures, it can be CPU-intensive at high values. For most situations, leaving Topology at 0% is recommended.
Motion Modulation
| Knob | What It Does |
|---|
| Chaos | On each MIDI note, randomizes unlocked parameters by this amount. Creates variation between notes. Right-click any knob to lock it from Chaos modulation. |
| Drift | Slow Brownian-walk modulation over 30-120 seconds. Parameters gradually wander with velocity-smoothed random walks, creating evolving textures without sudden changes. |
| Scatter | Per-voice random variation. Each simultaneous bubble gets slightly different parameter values (surface tension, viscosity, decay, radius), creating natural ensemble variation. Zero effect when set to 0%. |
Surge Modulator
Surge provides physics-based temporal envelopes that trigger on note-on, creating evolving foam events.
| Control | What It Does |
|---|
| Surge Mode | Selects the envelope shape |
| Time | Total envelope duration (1-30 seconds) |
| Depth | How much the envelope modulates parameters (0-100%) |
Surge Modes
| Mode | Character |
|---|
| Off | No temporal modulation |
| Wave | Smooth sine-like swells |
| Pummel | Aggressive attack, rhythmic pumping |
| Roil | Turbulent, chaotic modulation |
| Gush | Building intensity, like water surging |
| Burst | Sharp attack, gradual decay |
Surge modulates the Rate parameter among others. If Rate is already at maximum, Surge has nowhere to push it higher. Set Rate to 30-50% so Surge can modulate in both directions for the full dynamic range of foam events.
