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P2-R1: ALSA + JACK2 low-latency config (scripts, quirks, tuning) P2-R2: Carla integration (build scripts, 8ch rack config, NAM LV2 support) P2-R3: Plugin manager, categories, blacklist, NAM model support P3-R1: Mixer DSP engine (channel strip, routing matrix, bus mgr, automation) P4-R1: MIDI engine (learn mode, clock sync, HID discovery, mapping store) P4-R2: Network API (OSC server, FastAPI REST, WebSocket, auth, rate limiter) P5-R1: Touchscreen UI evaluation + main entry point docs: Audio stack, Carla integration, MIDI support, UI evaluation tests: Full test suite (292 passing)
43 lines
1.5 KiB
Markdown
43 lines
1.5 KiB
Markdown
# Raspberry Pi Real-Time Audio Mixer
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RPi4B-based multi-channel real-time audio mixer with custom PREEMPT_RT kernel.
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## Architecture
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- **Platform:** Raspberry Pi 4 Model B (8GB RAM)
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- **OS:** Raspberry Pi OS Lite (64-bit, Bookworm) + custom PREEMPT_RT kernel
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- **Audio:** USB audio interface with multi-channel I/O
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- **Goal:** Low-latency (<10ms round-trip) multi-channel audio mixing
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## Project Structure
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```
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├── docs/ Research, architecture decisions, manuals
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│ ├── research/ Technical research reports
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│ ├── decisions/ Architecture Decision Records (ADRs)
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│ └── manuals/ Hardware/software manuals and references
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├── src/ Source code (audio engine, DSP, UI)
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├── build/ Build scripts and cross-compilation tooling
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├── recipes/ Buildroot/Yocto recipes (if applicable)
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├── scripts/ Utility and deployment scripts
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└── wiki/ Local wiki pages
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```
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## Status
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**Phase 1-4: Core audio stack + MIDI controller support (in progress)**
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- [x] P1-R1: System Research — USB audio, PREEMPT_RT kernel analysis
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- [x] P1-R2: Base OS Selection — RPiOS Lite 64-bit + custom PREEMPT_RT
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- [x] P2-R1: ALSA + JACK2 Low-Latency Config
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- [x] P4-R1: MIDI Controller Support — Binding + Learn Mode
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- [ ] P3: Audio Engine — DSP pipeline, mixing engine
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- [ ] P4: Hardware Integration — GPIO control surface
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## Getting Started
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*Documentation coming in Phase 2+*
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## License
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TBD
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