devices/e-mu/emu_proteus.jsonEdit on GitHubJSONE-MU Proteus MIDI CC chart, NRPN and OSC map
The E-MU Proteus MIDI implementation: 29 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.
- sourceElectra One preset
- real unitnot yet checked
Not checked on a real E-MU Proteus yet. Own one? Load a sound or send a control, and tell us whether it worked.
- Maker
- E-MU
- Version
- per Electra preset
- Source
- Electra One preset
- OSC prefix
/emu_proteus
Use it
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/e-mu/emu_proteus.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as emu_proteus: ask “what can the E-MU Proteus do?” and it reads this map with list_routes. See the MCP guide.
MIDI controls
29 controls, each with its number, its range and the name to send
SysEx commands
| Command | Arguments | Name to send |
|---|---|---|
| Instrument | val: u7 | /emu_proteus/instrument |
| Sample start | val: u7 | /emu_proteus/sample_start |
| Coarse tune | val: u7 | /emu_proteus/coarse_tune |
| Fine tune | val: u7 | /emu_proteus/fine_tune |
| Chorus | val: u7 | /emu_proteus/chorus |
| Reverse 1 | val: u7 | /emu_proteus/reverse_1 |
| Reverse 2 | val: u7 | /emu_proteus/reverse_2 |
| Shape | val: u7 | /emu_proteus/shape |
| Rate | val: u7 | /emu_proteus/rate |
| Delay | val: u7 | /emu_proteus/delay |
| Variable | val: u7 | /emu_proteus/variable |
| Amount | val: u7 | /emu_proteus/amount |
| Submix | val: u7 | /emu_proteus/submix |
| Pri volume | val: u7 | /emu_proteus/pri_volume |
| Panning 2 | val: u7 | /emu_proteus/panning_2 |
| Mode | val: u7 | /emu_proteus/mode |
| Balance | val: u7 | /emu_proteus/balance |
| Xfade direct | val: u7 | /emu_proteus/xfade_direct |
| Sec volume | val: u7 | /emu_proteus/sec_volume |
| P bend | val: u7 | /emu_proteus/p_bend |
| Pressure | val: u7 | /emu_proteus/pressure |
| Vel curve | val: u7 | /emu_proteus/vel_curve |
| Tuning | val: u7 | /emu_proteus/tuning |
| Attack | val: u7 | /emu_proteus/attack |
| Hold d | val: u7 | /emu_proteus/hold_d |
| Decay | val: u7 | /emu_proteus/decay |
| Sustain | val: u7 | /emu_proteus/sustain |
| Release | val: u7 | /emu_proteus/release |
| Alt env pri | val: u7 | /emu_proteus/alt_env_pri |
Performance MIDI
Notes, pitch bend and any CC are also available: /emu_proteus/note/on <note> <velocity>, /emu_proteus/cc/<number> <value>, /emu_proteus/pitchbend <0-16383>, /emu_proteus/program_change <n>.
Limitations
Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.
Frequently asked questions
Can an AI agent like Claude control the E-MU Proteus?
Yes: SynthHub's hosted MCP server knows the E-MU Proteus's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.