From the Christian Science Monitor:
'The Orlando Sentinel newspaper reported Saturday that experts it contacted could not confirm that it was Martin?s cry because they had no sample of the teen?s voice to compare.
But using a sample of Zimmerman?s voice, they confidently eliminated Zimmerman as the one crying out in distress.
?Tom Owen, forensic consultant for Owen Forensic Services LLC and chair emeritus for the American Board of Recorded Evidence, used voice identification software to rule out Zimmerman,? the newspaper reported. ?Another expert contacted by the Sentinel, utilizing different techniques, came to the same conclusion.?
Using software called Easy Voice Biometrics, Mr. Owen compared Zimmerman's voice to the 911 call screams.
The software returned a 48 percent match, the newspaper reported ? far less than the 90 percent positive match that would be expected with audio of that quality.
"As a result of that, you can say with reasonable scientific certainty that it's not Zimmerman," Owen said.
Ed Primeau, a Michigan-based audio engineer and forensics expert, relied on audio enhancement and human analysis based on forensic experience to come to the same conclusion.'