Brown Noise

How it's made

Source

continuous stochastic pressure, modelled by integrated white noise (brown noise), not a tone. Its power falls approximately 6 dB per octave above the integrator's low-frequency turnover.

Body

a 28 Hz high-pass removes subsonic drift; a broad, non-resonant 500 Hz low-pass softens hiss. There are no cavity modes, whistles, discrete events or reverberation to distract from sleep.

Layers

the main pressure bed is centred. Two independent brown streams above 160 Hz add a quiet, diffuse upper body without decorrelating the deepest bass or creating delayed comb-filter notches.

Envelope

stationary sustain throughout a 10 s loop; random microstructure supplies natural movement. No imposed pulsing, gust envelope or fade-to-silence; the renderer crossfades the loop boundary.

Variation

named random streams preserve reproducibility. Low cut, softness and upper-body spread provide deep sleep, muffled blanket, small-speaker and spacious headphone variants.

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