Repository navigation
SING turns CHOMPI into a live harmonizer. Sing into the mic and hold keys: each held key adds your voice, pitch-shifted by its distance from the middle C. Hold C and E and you sing a third. Or flip the toggle switch to latch: hold a chord, let go, and it keeps following your voice while your hands are free for the knobs. Up to 7 voices; looper and effects work as in TAPE.
An external mic on the input jack is strongly recommended. The built-in mic sits on the same board as the keys and picks up their clicks.
The controls follow TAPE's layout:
| Knob | Page 1 | Page 2 |
|---|---|---|
| 1 | transpose, continuous ±12 semitones | harmony volume |
| 2 | spread (voices alternate left/right) | attack |
| 3 | doubler | release |
- Toggle switch: latch. Voices keep sounding after you let go; press a key again to drop that note.
- Chompi key: the menu, as in TAPE. In the menu, knob 1 jumps transpose in fifths and octaves (a press resets it), and a press on knob 6 sends your dry voice to the headphones, all outputs, or nowhere.
- Turn a knob and the white keys briefly show its position.
- Every start begins from the defaults.
Details: firmware/chompi-sing.
Install: with the multi-firmware launcher v1.1 or later, send CHOMPI_SING_beta.bin to a free slot from https://ugrossek.github.io/CHOMPI/. On a stock card, put it in the card root as the only .bin.
Use headphones: the built-in mic and speaker feed back.
SHA-256: 18fae1e5eab49f391a5b95cc0e9b1b088d1cc55e915aea722ee3c77bf27d5dfa
Beta: expect rough edges; feedback is welcome.
Written together with Claude, Anthropic's AI assistant, and tested on one CHOMPI. Unofficial, experimental software, provided as-is with no warranty; use it at your own risk.