Euclidean Rhythm

k onsets spread as evenly as possible across n steps — which is most of the world’s rhythms.

audio.rhythm · v1 · renderer audio

0:00 / 0:00

E(3,8) x..x..x. · Cuban tresillo · 4 bars at 110 BPM · 3 layers · acoustic kit

E(3,8) is the Cuban tresillo — the same pattern the algorithm finds and a tradition settled on.

[data-audio-stage] { display: none; }

Synthesised in the browser

No audio file crosses the wire. The server sends a score — the events, envelopes and synthesis parameters below, plus a 32-byte key — and the samples are made here, from the same byte stream the server would have used. A four-minute piece is about two kilobytes of JSON. That needs JavaScript, so with it switched off there is nothing to play.

The score itself is still public: /api/v1/g/audio.rhythm returns it, and the synthesis is in resources/js/audio.

E(3,8) x..x..x. · Cuban tresillo · 4 bars at 110 BPM · 3 layers · acoustic kit

entropy in

16 bytes

stream used

314 bytes

rejections

duration

188 µs

patterns

kick x..x..x. hat xxxxxxxxxx.xxxxx snare .x...x...x...x..

tempo

110 BPM

duration

9.2 s

onsets

Seed receipt

Class C · Observational cached

A magnitude 4.3 earthquake, 13 km NW of Cepitá, Colombia, 153.8 km down — 49 minutes ago.

Carries only tens of bits of genuine surprise. Always mixed with the OS CSPRNG.

source: USGS Seismic Feed
observed: 2026-09-13T17:55:25+00:00
latency: 0ms
mixed with: csprng — always

https://earthquake.usgs.gov/earthquakes/eventpage/us7000th7k ↗

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The token is the seed, so this link recomputes the result rather than looking it up. No database, and it works for as long as v1 does.

Controls · from schema()

Onsets (k)

1 16

How many hits. k=3, n=8 is the tresillo; the panel names the pattern whenever it recognises one.

Steps (n)

2 16

Rotation

0 15

Which step becomes the downbeat. Same onsets, different rhythm — this is what separates the cinquillo from the son clave.

Layers

1 4

Layer one is yours. The rest draw their own k and n, which is where the polyrhythm comes from.

Tempo (BPM)

50 200

Bars

1 16

Swing

0 0.6

Delays every second step. At 0.33 the steps land in triplet time, which is where swing comes from.

Kit

Volume (dBFS)

-36 0

Where the mix sits before the master limiter. 0 dBFS is full scale; everything starts 12 dB below it.

Entropy source

Picking a source changes the story on the receipt, never the quality: anything below class A is mixed with the OS CSPRNG before it reaches you. This result actually came from USGS Seismic Feed.

seed token TGX54ZJTASNF6PHP0RHX20PYQ8

Re-render keeps this token. Generate replaces it. That is the whole idea.

The file is the render, sample for sample — not a second performance of it. The seed below reproduces it anywhere.

monitor

80%

This page and /api/v1/g/audio.rhythm run the same code. There is no private endpoint.

Euclidean Rhythm

Result

Measurements

Seed receipt

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