A fading in white noise sound, for use as transition or a crescendo. I was trying to imitate the sound when you wake up in the video game "outer wilds" (an example: https://youtu. Be/zy5heapfjqw?t=5402 ) this sound was made by blowing to a microphone, slightly processed.
These sci-fi synth sweeps were created by manipulating white noise with filter sweeps and other effects and then using noise reduction to remove the underlying white noise. You would need to pick through them and cut them up, but they can be useful for sound designing light graphic elements that move around and animate on and off.
Background white noise recorded inside an rf shielded chamber on a rack in a computer test lab. Constant drone with no beeps or clicks. A bit cleaner sounds when the door is shut perhaps useful for your sci-fi project?.
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.