Computer fan blowing: blowing air, going all woosh. Can be used as a generic ventilation sound. Recorded using audacity, mono zingyou zy-ud1. Can be looped.
I tested ho effective the idea in http://www. Freesound. Org/forum/viewtopic. Php?p=24663#24663 is and used a splatter guard to keep the wshwshwshwhshwww away from my zoom h2public domain/cc0 like most of my sounds.
Please excuse the naming convention. It is for a university project that i had to begin with my student number. This is the sound of a ceiling fan being on.
This a recording of my extremely noisy laptop fan at full speed, that is also experiencing insane coil whine. Recorded with the internal microphone of my sony rx100 vii.