This is just ordinary white noise. . . The algorithm for this noise was created two years ago by myself in c++, as an imitation of noise generators in supercollider 2.
Experimental I simple demo done with some loops I created many years ago. Slightly remastered for posting at FreePD. Source: Kevin MacLeod - Kevin MacLeod
This is a piece, which is a continuous sound, realized a couple of decades ago, with an arp 2600 analog synthesizer. The idea was to create a kind of "tornado" sound.
This is an old sample that i recorded a while ago. Not sure where it came from but i think it might be a sewing machine, or some piece of industrial equipment.
Throbbing machinery sound, made from recording a ceiling fan that was making a weird noise. It was recorded with a small sony digital recorder about three years ago.
Demonic voice whispering something. I recorded and added the effect. . . 20 years ago, so i don't really remember what the words were. . . Time flies!.