Bonfire Roar

How it's made

Source

a large open-air log pile; turbulent combustion is brown and pink noise at 40-800 Hz, with a quieter escaping-gas band at 1.5-6 kHz. No enclosed hearth or room resonance is present.

Body

broad low pressure at 60-260 Hz stays centred with a moving 100-220 Hz plume band. Independent flame sheets fill the stereo field. Their low-pass edge moves through 320-780 Hz as oxygen supply and flame speed change.

Envelope

random 0.22 Hz breathing and 1.8 Hz flame flutter jointly move roar level and brightness; the 12 s loop is crossfaded by the engine, without a start-up or extinguishing envelope.

Events

18-48 fibre fractures/s use 2-6 ms noise attacks and damped inharmonic wood modes; 0.8-3 sap pops/s add 7-18 ms bursts with a low 45-110 ms pressure body and a fading steam spray.

Layers

200-650 fine ember ticks/s form a dense crackle bed, high-passed and rolled off above 8 kHz. Pop and fracture attacks are rounded, with DC removal; no unfiltered impulses reach the output.

Variation

independent seeded timing, strength, body size and pan; macros change combustion, fuel dryness, resin, breathing and listening distance. Presets cover festival, dry, resinous and distant fires.

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