7Online.com: " 2004) _ It was the scream Howard Dean says became famous after the media played it nearly 700 times in a few days. Not only that, his camp adds, what we heard on the air was not a reflection of the way it sounded in the room.

...

After my interview with Dean and his wife in which I played the tape again -- in fact played it to them -- I noticed that on that tape he's holding a hand-held microphone. One designed to filter out the background noise. It isolates your voice, just like it does to Charlie Gibson and me when we have big crowds in the morning. The crowds are deafening to us standing there"

So that scream we all heard during the Dean campaign was just him talking at the level of the crowd.

(Via /.)