An 18 second seamless loop of open wind: a low body of moving air with two slow gusts passing through it, plus a thin whistle in the upper band. Use it for exposed landscapes, night scenes, empty rooms with a window open, and anything that needs to sound cold without sounding like noise.
body: white noise, low-pass 420 Hz, Q 0.6, level 0.85 gusts: white noise, band-pass 700 Hz, Q 0.5, level swinging 0.25 to 1.0 with a 1/9 Hz envelope (exactly 2 cycles in 18 s) whistle: white noise, band-pass Q 6, centre drifting 2.2 to 2.6 kHz with the same envelope, level 0.16 swinging 0.84 to 1.0 seam: 0.6 s rendered past the end and equal-power crossfaded (sin/cos) back onto the head noise seeds: 131 (body), 132 (gusts), 133 (whistle)