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FOAM’s interface is organized into five main cards:
CardLocationPurpose
Bubble PhysicsTop LeftHow bubbles emerge, pop, ring, and fade
Fluid DynamicsBottom LeftThe liquid medium — density, tension, damping
EnhancersTop RightSpatial effects, modulation, and temporal dynamics
Pitch Gravity LogicBottom RightScale quantization and pitch behavior
Foam Voicing DynamicsCenter BottomVoice scaling and parallel compression

Header Bar

The top bar contains:
  • Preset dropdown — browse and save presets
  • MIDI Learn button — click, then right-click any knob to assign a MIDI CC
  • CPU Cut button — reduces density for low-power machines
  • OSC Setup button — configure OSC output (green when active)

Parameter Locking

Right-click any knob to lock it. Locked parameters are excluded from:
  • Chaos randomization on note-on
  • Drift modulation
  • Preset changes (locked knobs retain their current value)