Audrey II (official firmware)
Firmware for Audrey II (Synthux Academy)
Official firmware for Audrey II: a Karplus-Strong string fed back through distortion, reverb, EQ filters and a long delay, silent until the feedback control is raised.
- Distribution
- Prebuilt image you flash yourself
- Source
- github.com https://github.com/Synthux-Academy/Audrey-II
- Homepage
- synthux.academy https://synthux.academy/store/audrey-ii
- synth
- feedback
- drone
- karplus-strong
- open-source
- simple-designer
- daisy-seed
Description
Audrey II feeds an inaudible stream of white noise into a Karplus-Strong string model, takes the string output through a soft-clipping distortion, a reverb and gentle low-pass and high-pass filters, and returns it to the string through a longer delay line called the body. Nothing sounds until the outer feedback gain rises, and a tape-like delay with feedback that can grow without bound adds warbling and distortion. The same engine was ported to the Touch 2 as Audrey II Touch. The repository README links a build video and assembly guide.
Install notes
Download the latest .bin (the README links audrey-ii-v3.bin in simple-designer-instruments), open the Daisy Web Programmer in Chrome, put the Seed in bootloader mode with a data-capable USB cable, choose the file and press Program. Building needs the Daisy toolchain and make.
Version history
| Version | Date |
|---|---|
| v1.0.3 | 2026-08-03 |