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Poison Cloud

A toxic cloud spell spreading out: a murky low swell, a wet hiss and bubbling that thins away

kind
one-shot
length
3.25 s
downloads
0
id
7TKV2KPSDC

one-shot · 3.25 s · 0 downloads · 0 likes

0.00 / 3.25 sMP3 preview · Swamp bubbling
Preset
Spectrogram of “Poison Cloud”, Swamp bubbling preset
Spectrogram of “Poison Cloud”, Swamp bubbling preset: time left to right, frequency bottom to top.
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Tweak

renders in the CLI · WAV

Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.

Command
$ sb get 7TKV2KPSDC@1 --preset swamp -o poison-cloud.wav

How it's made

Source
a toxic gas cloud billowing out of a cauldron-like vent. Three layers: a murky low body (brown noise plus two slightly detuned low sines that beat slowly), a wet hiss (pink noise high in the spectrum, the gas escaping) and bubbling (small air bubbles popping at the surface, Minnaert pitch f0 = 3.26 / r).
Body
the murk is low-passed at 150-450 Hz and opens as the cloud expands; the sines sit at about 62 Hz and a close detune, so the beating reads as a slow, uneasy pulse. The hiss is band-passed around 3-6 kHz with a centre that drifts upward as the cloud thins out; bubbles are 2-9 mm, bigger ones lower and rarer.
Envelope
slow spread, not an attack: the level swells over roughly 40 % of the length, holds, and dissolves in a long fade. Bubble density follows the same hump: sparse, busy at the peak, sparse again.
Space
width grows from nearly mono at the vent to wide as the cloud spreads; the hiss uses decorrelated noise per channel, bubbles are panned at random.
Variation
`rng` varies the bubble radii, times and pans, and the detune of the low pair.
Parameters
ParameterRangeDefaultUnitControls
length1.5 – 42.5sLength
murk0 – 10.55—Murk
hiss0 – 10.5—Hiss
bubbling0 – 10.5—Bubbling
spread0 – 10.7—Spread
bubbleSize0 – 10.4—Bubble size
seedint1—Variation, reproducible

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.

Credits and creation history (JSON)
Revision history1
  1. r12026-10-24engine 1.0.1use('7TKV2KPSDC@1')

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