Bryan Keefer at the CJR Campaign Desk collects the evidence that reporters in the room with Howard Dean perceived his fateful scream speech much differently from the way it played on television:

Dean's "gravelly voice [was] barely audible over the din of applause inside the '70s-style disco hall."

There should be a specialty field of audio technology aimed at matching the audio produced for TV and radio to the amplification in the room with the monitor amp for the speaker. For all the money that is spent repeating the same ads on TV--Wesley Clark, I'm looking at you, with rarely blinking eyes--it can all be swamped by the repetition of a horrible news clip. Spend more of your money making sure you don't make another clip like that.