The embedded build, licensed per unit.
The same engine as the hosted API, compiled for your board and running inside your audio callback. No network round trip, no allocation, no variance between one call and the next.
What has been proven
HORN SXTN v1 — five pitch-shifted voices plus chord detection and tracking — ran on a stock Elk Stomp development board at an average of 0.593 ms per block against a 1.333 ms deadline, worst block 0.83 ms.
- SoCSTM32MP157, dual Cortex-A7
- Clock800 MHz, performance governor
- Audio48 kHz, 64-sample buffer
- HostElk Audio OS 1.2.2, Sushi 1.3.0
- PluginHeadless JUCE 8 VST3
Cortex-A7 at 800 MHz is close to the floor for this class of work. If it fits there, it fits on the part you are shipping.
How licensing works
Per unit, on the hardware you ship. The engine is delivered as a static library plus a thin integration layer for your host, with the golden-vector suite so you can prove the port is faithful on your own target rather than taking our word for it.
Evaluation builds are available for pedal makers, instrument manufacturers, and anyone putting a real-time harmony layer into hardware.
Licensing the MCP server for a software product instead? Commercial licence for the THIRI MCP.