Ableton GrainDelay: MIDI CC, NRPN and OSC map¶
The Ableton GrainDelay as named OSC addresses — 11 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Ableton GrainDelay |
|---|---|
| Vendor | Ableton |
| OSC prefix | /graindelay |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/ableton/graindelay.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control 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/ableton/graindelay.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 graindelay: ask “what can the Ableton GrainDelay do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (11)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/graindelay/beats |
8 | 0–127 | continuous | ||
/graindelay/spray |
6 / 38 | 0–16383 | continuous | ||
/graindelay/pitch |
4 / 36 | -360–120 | continuous | ||
/graindelay/feedback |
2 / 34 | 0–950 | continuous | ||
/graindelay/sync_time |
9 | 0–127 | continuous | ||
/graindelay/beat_swing |
0 / 32 | -333–333 | continuous | ||
/graindelay/frequency |
3 / 35 | 0–16383 | continuous | ||
/graindelay/random |
5 / 37 | 0–1610 | continuous | ||
/graindelay/drywet |
1 / 33 | 0–1000 | continuous | ||
/graindelay/device_on |
10 | 0–127 | continuous | ||
/graindelay/time |
7 / 39 | 0–16383 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /graindelay/note/on <note> <velocity>, /graindelay/cc/<number> <value>, /graindelay/pitchbend <0-16383>, /graindelay/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.