Folio Audio — Prospero Suite
The Prospero Suite is a family of iOS apps that turn body tracking into musical expression, built on a shared foundation of Swift packages for MIDI, audio synthesis, and computer vision.
The Trilogy
| App |
Role |
Input |
Output |
| Prospero |
Melodic instrument |
Hand tracking (1–4 hands) |
Built-in synth + MIDI out |
| Caliban |
Expressive MIDI controller |
Hands, body, face, relationships |
MIDI out only |
| Hecate |
Face-controlled chord synth |
ARKit face tracking |
Built-in audio |
All three apps share the same Swift package foundation — see Architecture for details.
| Tool |
Purpose |
| Workbench |
Load, audition, and tweak Touchstone recipes and synth voices |
| PhotoLab |
Internal diagnostic overlay for tracking validation |
| VizLab |
Audio-reactive visualization design workbench |
Quick Links
- User Guides — How to use Workbench, VizLab, and the apps
- Developer Reference — Architecture docs auto-published from CLAUDE.md files
- Reference — Technical reference (note mapping, analog character)
Shared Packages
| Package |
Purpose |
| Horatio |
Input source protocol, MIDI types, Scale enum, note utilities |
| Enobarbus |
Hand/body/face tracking, camera management, position stabilization |
| Touchstone |
DSP components, signal graph, recipes, synth engine, effects |
| Ariel |
Audio engine, MIDI routing, MIDI controller, MIDI clock/learn |
External Dependencies
- FolioDSP — C++ DSP kernel library with Swift bridge (separate repo + docs site)