The Orlando Sentinel reports that two forensic analysts told the paper that, having listened to the the 911 calls made the night of the Trayvon Martin shooting, they have concluded that the man heard screaming for help on the tapes is not George Zimmerman. The first, Tom Owen, an audio engineer, consultant, and past expert witness used voice recognition software to compare the cries to Zimmerman’s voice:>
It returned a 48 percent match. Owen said to reach a positive match with audio of this quality, he’d expect higher than 90 percent. “As a result of that, you can say with reasonable scientific certainty that it’s not Zimmerman,” Owen says, stressing that he cannot confirm the voice as Trayvon’s, because he didn’t have a sample of the teen’s voice to compare.