Windtexture · 15 s
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Chimney Moan
Muffled wind breathing down an old chimney, with low hollow resonances and slow pitch swells.
loop · 12 s · 0 downloads · 0 likes
0.00 / 12 sdefault
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get 58B9ESJHW5@1 -o chimney-moan.wav
How it's made
- Source
- continuous pink-noise turbulence blowing over a chimney mouth; filtered air reaches the hearth.
- Body
- a damped flue has a 65-120 Hz effective low mode and weak odd modes at 3 and 5 times that pitch. Noise-driven resonances (Q 7-24) keep a hollow, breathy moan rather than a clean oscillator whistle.
- Tone
- flow locking adds a soft fundamental and weak third harmonic, with pressure-driven amplitude.
- Envelope
- broad pressure swells take 6-12 s, with slower random wander; level, pitch and air colour follow the same pressure. No impacts or discrete attacks; the renderer crossfades the 12 s loop seam.
- Modulation
- flow shifts the dominant resonance by about 30 percent; fixed higher cavity modes respond more softly. A 35-140 Hz pressure bed stays underneath; two low-passes muffle the mouth turbulence.
- Space
- a narrow central flue with quiet decorrelated air at the sides; no added room reverberation.
- Variation
- seeded noise and pressure drift; presets change flue depth, damping, draft and swell rate.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| depth | 0 – 1 | 0.6 | — | Flue depth |
| draft | 0 – 1 | 0.55 | — | Draft |
| damping | 0 – 1 | 0.65 | — | Muffling |
| swell | 0 – 1 | 0.5 | — | Swell pace |
| hollow | 0 – 1 | 0.7 | — | Cavity voice |
| seed | int | 1 | — | 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.
Revision history1
- r12026-10-24engine 1.0.1use('58B9ESJHW5@1')