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Trayvon Martin Shooting: Voice Experts Claim Cries Heard On 911 Call Were Not George Zimmerman's

Posted: 03/31/2012 11:20 pm Updated: 04/ 2/2012 8:43 am

George Zimmerman 911 Call

Before George Zimmerman shot Trayvon Martin on February 26, a 911 call recorded the voice of someone screaming. Whether that person was Martin or Zimmerman -- who police say claimed he was attacked by Martin before the fatal incident -- has been an open question since the calls were released by the Sanford, Florida police department. (WARNING: Above audio is disturbing.)

The Orlando Sentinel consulted two voice experts to try to settle the debate, and both came to the same conclusion: The cries could not have come from George Zimmerman.

One expert, Tom Owen, used voice identification software to rule out Zimmerman as the source. From the Sentinel:

"I took all of the screams and put those together, and cut out everything else," Owen says.

The software compared that audio 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.

Another analyst came to a similar conclusion using different technology.

The voice analysis is the latest piece of information to cast doubt on the narrative, advanced by Zimmerman and his family, that the Neighborhood Watch volunteer was attacked by 17-year-old Travyon Martin. A police video this week showed no blood or bruises on Zimmerman in the aftermath of the incident, while Martin's funeral director said he saw no signs of a struggle on the teen's body.

CORRECTION: A previous headline for this story stated that voice experts claimed the cries on the 911 call came from Trayvon Martin. In fact, they only said that the cries did not come from George Zimmerman.


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  • Trayvon Martin Photos

    Benjamin Crump, attorney, for the family of the late Trayvon Martin, talks to the media after the release of 911 call at the Sanford City Hall on Friday, March 16, 2012 in Sanford, Fla. Martin, 17, was shot to death after being confronted by Sanford neighborhood watch volunteer George Zimmerman, 28, on February 26, 2012. Zimmerman told Sanford Police that he shot the unarmed black teenager in self-defense. Family members are calling for Zimmerman's arrest. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Benjamin Crump, attorney, for the family of the late Trayvon Martin, talks to the media after the release of 911 call at the Sanford City Hall on Friday, March 16, 2012 in Sanford, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Benjamin Crump, attorney, for the family of the late Trayvon Martin, talks to the media after the release of 911 call at the Sanford City Hall on Friday, March 16, 2012 in Sanford, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    A memorial for the late Trayvon Martin sits at the neighborhood where he was shot on Friday, March 16, 2012 in Sanford, Fla. Martin, 17, was shot to death after being confronted by Sanford neighborhood watch volunteer George Zimmerman, 28, on February 26, 2012. Zimmerman, white, told Sanford Police that he shot the unarmed black teenager in self-defense. Family members are calling for Zimmerman's arrest. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Local historian and activist Francis Oliver adjusts a memorial she placed for the late Trayvon Martin at the neighborhood where he was shot on Friday, March 16, 2012 in Sanford, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Valera Pinkard, of Orlando, Fla., holds a sign near a memorial for the late Trayvon Martin at the neighborhood where he was shot on Friday, March 16, 2012 in Sanford, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Sybrina Fulton, mother, of the late Trayvon Martin, addresses the media with Martin's father Tracy Martin, left, on Friday, March 16, 2012 in Orlando, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Sybrina Fulton, mother, of the late Trayvon Martin, left, hugs Selma Mora Lamilla, after addressing the media on Friday, March 16, 2012 in Orlando, Fla. Credit: David Manning for The Huffington Post

  • Tracy Martin, father, of the late Trayvon Martin, addresses the media on Friday, March 16, 2012 in Orlando, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Benjamin Crump, attorney for the family of the late Trayvon Martin, addresses the media on Friday, March 16, 2012 in Orlando, Fla. Credit: David Manning for The Huffington Post

  • Trayvon Martin Photos

    Tracy Martin, father, of the late Trayvon Martin, addresses the media on Friday, March 16, 2012 in Orlando, Fla. Credit: David Manning for The Huffington Post

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin rally in Union Square during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters marched through the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Supporters of Trayvon Martin block traffic as they march on W. 14th Street during a 'Million Hoodie March' in Manhattan on March 21, 2012 in New York City. Thousands of protesters turned out to demonstrate against the killing of the black unarmed teenager by a white neighborhood watch captain. The protesters took to the streets after holding a large rally in Union Square. (Photo by Mario Tama/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Tracy Martin (L), and Sybrina Fulton, parents of slain teenager Trayvon Martin, address supporters at a Million Hoodies March on March 21, 2012 in New York City. Family members joined hundreds of protesters calling for justice in the killing of Trayvon Martin, 17, who was was pursued and shot on February 26 in Sanford, Florida by 'neighborhood watch' member George Zimmerman, reportedly because the teenager's hoodie made him look suspicious. Under Florida's 'Stand Your Ground' law, Zimmerman has not been charged with a crime in the shooting. (Photo by John Moore/Getty Images)

  • A Million Hoodies March Protests Death Of Trayvon Martin

    NEW YORK, NY - MARCH 21: Sybrina Fulton, mother of slain teenager Trayvon Martin, speaks at the Million Hoodies March on March 21, 2012 in New York City. The family members joined hundreds of protesters calling for justice in the killing of Trayvon Martin, 17, who was was pursued and shot on February 26 in Sanford, Florida by 'neighborhood watch' member George Zimmerman, reportedly because the teenager's hoodie made him look suspicious. Under Florida's 'Stand Your Ground' law, Zimmerman has not been charged with a crime in the shooting. (Photo by John Moore/Getty Images)

  • Federal Government To Investigate Shooting Of Unarmed Teen Trayvon Martin

    MIAMI, FL - MARCH 21: Protesters hold cans of ice tea and Skittles which is what the 17-year-old Trayvon Martin is reported to have been carrying when he was killed by neighborhood watch person, George Zimmerman on February 26 in Sanford, Florida, on March 21, 2012 in Miami, Florida. The Justice Department and the FBI opened an investigation into the death of the black teenager, and the local state attorney announced that he had asked a grand jury to investigate. (Photo by Joe Raedle/Getty Images)

  • Federal Government To Investigate Shooting Of Unarmed Teen Trayvon Martin

    MIAMI, FL - MARCH 21: Protesters hold cans of ice tea and Skittles which is what the 17-year-old Trayvon Martin is reported to have been carrying when he was killed by neighborhood watch person, George Zimmerman on February 26 in Sanford, Florida, on March 21, 2012 in Miami, Florida. The Justice Department and the FBI opened an investigation into the death of the black teenager, and the local state attorney announced that he had asked a grand jury to investigate. (Photo by Joe Raedle/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: A reporter waits to broadcast at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: People attend a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: A protester holds a sign with pictures of George Zimmerman at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by white and Hispanic neighborhood watch captain George Zimmerman. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Sanford resident Rodney Stokes carries his son Rodney Stokes Jr. on his shoulder at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Protesters demonstrate at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Rev. Al Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Rev. Al Sharpton (R) looks on at a rally with Tracy Martin (R), father of slain teenager Trayvon Martin, on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

  • Shooting Death Of Unarmed Teen Trayvon Martin Sparks National Outrage

    SANFORD, FL - MARCH 22: Rev. Al Sharpton departs as media are reflected in a vehicle window at a rally for slain teenager Trayvon Martin on March 22, 2012 in Sanford, Florida. Sanford Police Department Chief Bill Lee announced today he will temporarily step down following the killing of the black unarmed teenager by a white and Hispanic neighborhood watch captain. Sharpton organized today's rally. (Photo by Mario Tama/Getty Images)

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