Gravity Well

How it's made

Source

matter spiralling into a singularity, modelled as three layers. A tidal sub pull (a sine gliding from 75 Hz down to 26 Hz with a soft 2nd harmonic), turbulent infall (pink noise) and a tonal vortex (two slightly detuned saws gliding from 880 Hz down to 70 Hz).

Body

the swirl is pink noise through a resonant band-pass (Q ≈ 3) whose centre falls from a few kHz to 200 Hz as the orbit tightens; the tonal layer sits behind a low-pass that closes with the glide, so spectral energy moves steadily downward. A 40 Hz high-pass keeps the noise bed free of rumble.

Envelope

everything swells on an accelerating curve (slow start, steep rise) to a peak at ~78 % of the length, then collapses at the horizon in a short fall with a soft sub thump; the ending is fully silent.

Modulation

orbital tremolo on the swirl (2.5-6.5 Hz, set by the spin parameter) with opposed phase in the two channels so the noise circles the listener; the tonal layer pans slowly.

Variation

`rng` shifts glide start pitches by a few percent and the peak time by ±3 %, and decorrelates the left and right noise; presets change length, sub weight, swirl amount and brightness.

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