Calm Night

How it's made

Source

a still night in open country. The air is almost motionless, so the bed is very soft turbulence: pink noise, decorrelated left and right, through a wide low band-pass (centre ~140-520 Hz, Q ≈ 0.5) and a low-pass, so the spectrum is dark and falls off above ~1 kHz.

Body

a second, slower layer of canopy air (300-900 Hz band) swells a little later than the ground-level wind, as distant trees respond after the air at the listener. A faint brown-noise pressure floor (30-90 Hz) gives the night its weight.

Events

a distant rustle of dry leaves and grass: Poisson-timed soft noise puffs (4-12 ms attack, 30-140 ms decay), each band-passed at 1.6-5 kHz, low-passed to mimic air absorption over distance and panned at random; their rate follows the delayed gust.

Modulation

one slow gust envelope (periods of ~5-30 s) drives level, brightness and rustle together, with a cubic law so the air is nearly still between breaths; the canopy follows it 2.5 s later. No animals, no tones.

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