Simulation of blowing wind created by mouthing wind sounds into the mic, then processing with large-room reverb. Recorded with a rode nt1a condenser mic.
24-bit wav. Recorded with tascam dr-44wl on a windy day in my backyard. Hiding behind a fence using a hat as a wind shield. Stereo widening using hard pan and 5ms delay (so the first impulse of the sound is a bit weird).