Astronomer Mark Whittle has turned radiation data of the early universe into a short sound file(1).The clip condenses the first million years of the cosmos into about 5 seconds, reports Leonard David in an article (2) for Space.com.
The resulting roar has a dynamic, jet-like sound."I was relieved...I didn't want the universe to be some wimpy, quiet thing. But I didn't want it to be inhumanly, fatally loud. And it isn't. It's just loud...and that's great," Whittle explained.
1. http://www.space.com/media/mp3/universe.m3u
2. http://space.com/scienceastronomy/big_bang_sound_040601.html