My wife blowing into a usb microphone, making a "fwwwwpt!" sound, but reversed to sound like a blowgun. Recorded for the point-and-click adventure game, "the beard in the mirror. ".
I used the sound of a brush scraping as the source, added the sound you get when you twist a russian doll (already convolved with itself), and this was the result. To me it sounds a little bit like wind.
A fan blowing, set to the highest setting. There's a strong low end presence, interestingly. The recording was made from behind the fan so the air wouldn't blow into the mic directly. Recorded with a zoom h1.
A standing bicycle pump with the normal fitting was used to produce the sound. A zoom h6 recorder, using the xy capsule was used to record the sound inside a garage.
This is a charged up explosion i made for my project. It is used when a robotfalls on the ground and slows builds up then explode. I used a laser sound modified it with audacity, and combine with some smaller explosion and edited explosion sound with audacity.
Recording of the wind blowing trough a metallic door into the resonant hall of a apartment building. Ms stereo recording, using a pair of akg se300 with k91/k94 capsules into a zoom h4n, decoded to stereo.