04 December 2002

Speech recognition analysis suggests Bin Laden tape may be fake Guesswork plays a major role in even the most sophisticated analysis of audio recordings, and U.S. intelligence officials at first advised caution despite widespread claims that the tape aired last month was really of bin Laden. That's especially true since the tape in question was recorded over a phone line, which would have dampened the higher and lower frequencies, robbing analysts of important clues. 6:48:50 PM     comments