Forensic experts say screams for help in a 911 call just before Trayvon Martin was shot dead were not from George Zimmerman.
The Feb. 26 confrontation in Sanford, Florida between unarmed black teenager Martin and neighborhood watch volunteer Zimmerman, a 28-year-old white Hispanic man, has ignited a national furor.
Zimmerman has claimed that he shot the 17-year-old Martin out of self-defense, saying that the teen confronted and attacked him.
In a chilling 911 call, a woman called police after hearing screaming outside of her residence in Sanford, Fla. Screams and a gunshot are heard in the background. Zimmerman told police he was the one screaming for help, according to police reports.
The Orlando Sentinel first reported the findings Saturday of two experts who analyzed the voice in the 911 call. Tom Owen, forensic consultant for Owen Forensic Services LLC, compared the voice in the tape to that of George Zimmerman's, using identification software called Easy Voice Biometrics.
"As a result of that, you can say with reasonable scientific certainty that it's not Zimmerman," Owen told the Sentinel, adding he could not conclude that the voice was Martin's because he had nothing to compare the teen's voice with.
Owen found a 48 percent match between Zimmerman's voice and the voice on the 911 call. To reach a positive match with the audio quality of the 911 tapes, he'd expect more than a 90 percent match, he told the newspaper.
"I've run it against 300 voices and it was better than 99 percent in all cases," Owen told MSNBC when asked about its accuracy.
Michigan-based audio engineer and forensics expert Ed Primeau told the Sentinel that without a doubt, he believes the screams in the background are from Martin, stressing the tone of the voice comes from a young man.
Primeau based his findings on audio enhancement and human analysis based on forensic experience.
Owen told MSNBC that he thought the forensic tests would be admissible in court.
by RTT Staff Writer
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