sonoglyph

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.

FIG. 1 — FIRST CONTACTsynth: @sonoglyph/eridian · pure tones · 48 kHz

(1) “you are good”

B3 · °2D4 · °4F♯4 · °6S2triadE4 · °5G♯4 · °7B4 · °2S5triad
S2 S5 — “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.

three ways in

Dictionary

Every word in the starter lexicon — hear its chord, see the pitches that compose it.

Composer

Build an utterance, play it aloud, and watch the real recognizer decode it back.

Guided tour

Meet the vocabulary in teaching order, starting where Rocky did: good and bad.

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.