Sounds like the uplift to the drop of an edm track, but can also be used as a firework sound effect, or for a bomb dropping. Created using a low-passed square wave, over-compressing it, distorting it, playing 2 notes a semitone apart and pitch shifting.
Using lmms and valhalla supermassive, i sampled part of my own song and turned it into a few seconds of spacey ambience. If you use it, please let me know in the comments.
A sweeping / rising sound, intended for use in build-ups or transitions in dance music. Created with crescendo by digital dj tools: http://digitaldjtools. Net/software/crescendo/.