a chord-language explorer
Eridian
The language Rocky speaks in Project Hail Mary — an alien who talks in musical chords, not words. This is a deterministic, learnable version of that idea: a phonology, a starter dictionary, a small grammar, and real synthesis. Every sound here is built the same way the recognizer decodes it — nothing is a recording.
(1) “you are good”
A whole sentence in two chords: S2 (you) then S5 (good) — no copula needed. Press play, then click either column to hear that chord alone.
the centerpiece
live · microphone
Translator console
Speak Eridian at your microphone and watch it decode to English, live. It’s the jury-rigged translator from Project Hail Mary — powered by the real observable pipeline, not a mockup.
Turn a phone into Rocky → and speak Eridian at the console across the room.
three ways in
The full language is specified in docs/eridian.md and implemented in @sonoglyph/eridian — the same package this explorer, the recognizer plugin, and the test suite all build on.