Rolling Boil

How it's made

Source

steam bubbles nucleate and collapse in boiling water; 1.5-10 mm radii ring at 330-2170 Hz. Two overlapping Poisson populations supply 55-220 small bubbles/s and 10-39 large bubbles/s.

Body

churning water is pink turbulence at 130-1100 Hz over a 45-310 Hz rumble; pot size lowers bubble pitch and the broad water band. No sustained pitched oscillator or room reverb is used.

Steam

independent soft noise bands at 2-7 kHz breathe with the boil; a 9 kHz low-pass tames fizz.

Lid

irregular 2-19 contacts/s excite damped metal modes near 720, 1190 and 2030 Hz, T60 24-65 ms; a second contact 13 ms later suggests a loose lid bouncing against the rim, rather than a bell.

Envelope

bubble attacks soften over 0.6 ms and die in 30-95 ms; surface bursts last 9-25 ms. Shared 0.8 Hz and independent 2.7 Hz drifts cluster events and move the turbulence spectrum.

Variation

seeded radius, rise, strength, pan and mode detuning avoid a repeated bubble pattern. Presets isolate an open saucepan, loose lid, deep stockpot and vigorous steaming boil.

Loop

an 8 s continuous dry close perspective; engine seam crossfade joins stationary activity.

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