15,541 Royalty-Free Audio Tracks for "Scifi Sound"

Sound isn't very pleasant in it's base form. However when slowed down it produces an interesting sound that could be used for anything from tanks to motorcycles to some weird scifi effect.

A machine door shutting down.

This is the sound of electromagnetic waves from a macbook pro.

Like the door open but things are not reversed. Air affect is placed in front not behind for release of pressure.