Cabin Fireplace

How it's made

Source

split logs burning in a stone hearth. Burning gas roars as low turbulent noise (brown noise below ~350 Hz) that breathes slowly; a thin band of escaping steam and gas hisses around 2.5–4 kHz.

Events

wood fibres burst as crackles (2–5 ms noise kicks into tiny, bright wood modes, Poisson 3–26 per second, level ∝ strength²); rarer sap pockets pop as louder, lower knocks with a 10 ms burst and a 120 ms body.

Body

fine sparks fizz on top (sparse unipolar impulses, high-passed at 5 kHz). The small timber room adds a boxy cavity resonance at ≈ 140 Hz and a short comb (≈ 9 ms, wall to wall) that colours the fire without reverb.

Room

every few seconds the cabin walls tick and settle, a heavily damped low wood knock (modes ≈ 100–300 Hz).

Modulation

a slow drift (≈ 0.4 Hz) moves roar level and crackle rate together; a second, slower one (≈ 0.08 Hz) lets the fire swell and sink over tens of seconds, so long renders never repeat.

Variation

every crackle, pop and settle draws size, tuning, level and stereo position from its voice `rng`. Presets: a reading-lamp fire, a bedtime ember glow and a fresh roaring blaze.

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