Generative Ambient

A mood preset that evolves and never repeats.

audio.ambient · v1 · renderer audio

0:00 / 0:00

Glacier — high, cold, slow · Minor pentatonic (blues) on D3 · 9 chords · 11 notes · 60 s

Minor pentatonic in a high register with a thin pink floor under it. Nothing resolves, because a pentatonic scale has no semitone to resolve with. Bounded and looped rather than endless: the browser has to hold every sample before it can play one, and equal-power fades make the seam inaudible.

[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.ambient returns it, and the synthesis is in resources/js/audio.

Glacier — high, cold, slow · Minor pentatonic (blues) on D3 · 9 chords · 11 notes · 60 s

Controls · from schema()

Mood

Root

Length (seconds)

20 150

Bounded on purpose: the browser renders every sample before it plays anything. Loop it and the fades hide the seam.

Notes per minute

0 60

How often a single note falls over the pads. Zero leaves the chords and the floor alone, which is the version to work to.

Floor

0 2

Scales the noise layer. Past 1 the piece becomes weather with chords in it rather than the other way round.

Stereo spread

0 1

Movement

0 1

How far the filter over the floor drifts across the piece. It is most of what makes the thing sound alive rather than held.

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 drand · League of Entropy.

seed token 9X2KNA7BC2H7SXAH0TGNY3KGSW

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%

entropy in

16 bytes

stream used

657 bytes

rejections

duration

1,192 µs

mood

Glacier — high, cold, slow

scale

Minor pentatonic (blues) on D3

chords

notes

bed

pink noise at 16%

duration

60 s

overlap

each chord starts 55% of the way through the one before

Seed receipt

Class B · Public beacon

drand round 6,597,596 — no single operator could have predicted this value.

Published openly — anyone can look this value up after the fact.

source: drand · League of Entropy
observed: 2026-10-30T11:15:29+00:00
latency: 334ms
mixed with: csprng — always

https://api.drand.sh/public/6597596 ↗

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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.

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

Generative Ambient

Result

Measurements

Seed receipt

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