Underwater Pressure

How it's made

Source

submerged perspective, with turbulent pink noise and brown-noise pressure fluctuations. Static water pressure is silent; the rumble represents distant motion and water moving past the head.

Body

head/ear coupling is represented by two low-pass stages at 230–850 Hz, Q 0.65, suppressing airborne detail. A centred 32–125 Hz pressure bed underlies a gently decorrelated 85 Hz-up water bed.

Envelope

continuous 12 s loop, with 6 s and 12 s swells plus smooth random drift; no rhythmic drone. The engine crossfades the seam. Modulation remains bounded and never gates the background to silence.

Events

occasional 6–16 mm air pockets ring at roughly 200–540 Hz with a slight rising chirp. Each has an 8 ms softened onset, a 160–340 ms release, and a quiet 25 ms turbulent wake.

Variation

seeded streams separate pressure, stereo water, modulation and bubble events; event radius, strength and pan vary independently. Depth closes the spectral ceiling; motion increases the swells.

Presets

abyss is dark and pressure-heavy; sheltered water is steady with few bubbles; near-surface water retains more muffled detail; a submerged current has larger swells and more passing air pockets.

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