I just squeezed a rubber bath toy mermaid and lowered the speed. The last voop the duplicated whoosh sound after the first voop but amplified and higher pitch. So yeah. It kind of sounds like a laser being shot or something.
Recording of a bladeless fan or ventilation system in a hall at saxogade, vesterbro. The recorder is close to it. Feel free to download and use it, but remember to credit me. (rl).
I cleaned up the valve sound from https://freesound. Org/people/grotelue/sounds/96935/used audition to do noise reduction and manually edited out the people talking in the background.
The last seconds of air in a pipe organ, played with the bellows switched off. Recorded to a camera on a sennheiser ke66/k6 in oriel college chapel, oxford.
Strong fan set on the low setting, the airflow is deep sounding. Can be used for commercial and non commercial purposes as a creative piece of work. Recorded on the zoom f4 and rode m5's.