Mar 31 - It's not George Zimmerman crying for help on 911 recording, 2 experts say

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 6 years ago '04        #1
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BeatTycoon 268 heat pts268
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Mar 31 - It's not George Zimmerman crying for help on 911 recording, 2 experts say
 

 

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 Trayvon Martin shooting: It's not George Zimmerman crying for help on 911 recording, 2 experts say


As the Trayvon Martin controversy splinters into a debate about self-defense, a central question remains: Who was heard crying for help on a 911 call in the moments before the teen was shot?

A leading expert in the field of forensic voice identification sought to answer that question by analyzing the recordings for the Orlando Sentinel.

His result: It was not George Zimmerman who called for help.

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. Another expert contacted by the Sentinel, utilizing different techniques, came to the same conclusion.

Zimmerman claims self-defense in the shooting and told police he was the one screaming for help. But these experts say the evidence tells a different story.

'Scientific certainty'

On a rainy night in late February, a woman called 911 to report someone crying out for help in her gated Sanford community, Retreat at Twin Lakes.

Though several of her neighbors eventually called authorities, she phoned early enough for dispatchers to hear the panicked cries and the gunshot that took Trayvon Martin's life.

George Zimmerman, a Neighborhood Watch volunteer, shot Trayvon, an unarmed 17-year-old, during a one-on-one confrontation Feb. 26.

Before the shot, one of them can be heard screaming for help.

Owen, a court-qualified expert witness and former chief engineer for the New York Public Library's Rodgers and Hammerstein Archives of Recorded Sound, is an authority on biometric voice analysis — a computerized process comparing attributes of voices to determine whether they match.

After the Sentinel contacted Owen, he used software called Easy Voice Biometrics to compare Zimmerman's voice to the 911 call screams.

"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.

Forensic voice identification is not a new or novel concept; in fact, a recent U.S. Department of Justice committee report notes that federal interest in the technology "has a history of nearly 70 years."

In the post 9-11 world, Owen says, voice identification is "the main biometric tool" used to track international criminals, as well as terrorists.

"These people don't leave fingerprints, but they do still need to talk to one another," he says.

'The home run'

Though the term "biometric analysis" may sound futuristic, it basically just means using personal characteristics for identification. A fingerprint scanner is an example of a biometric device.

Much as the ridges of a human hand produce a fingerprint, each human voice has unique, distinguishable traits, Owen says. "They're all particular to the individual."

The technology Owen used to analyze the Zimmerman tape has a wide range of applications, including national security and international policing, he said. A recently as January, Owen used the same technology to identify accused murderer Sheila Davalloo in a 911 call made almost a decade ago.

Owen testified that it was Davalloo, accused of stabbing another woman nine times in a condo in Shippan, Conn., who reported the k!lling to police from a pay phone in November 2002.

Davalloo was convicted, according to news reports.

Owen says the audio from Zimmerman's call is much better quality than the 911 call in the Davalloo case. Voice identification experts judge the quality based on a signal-to-noise ratio; in other words, comparing the usable audio in a clip to the environmental noises that make a match difficult.

And the call on which the screams are heard is better quality than is necessary, Owen says.

"In our world, that's the home run," he says.

Not all experts rely on biometrics. Ed Primeau, a Michigan-based audio engineer and forensics expert, is not a believer in the technology's use in courtroom settings.

He relies instead on audio enhancement and human analysis based on forensic experience. After listening closely to the 911 tape on which the screams are heard, Primeau also has a strong opinion.

"I believe that's Trayvon Martin in the background, without a doubt," Primeau says, stressing that the tone of the voice is a giveaway. "That's a young man screaming."

Zimmerman's call to authorities minutes before the shooting provides a good standard for comparison, Primeau says, because it captures his voice both at rest and in an agitated state.

'CSI' effect

Only one person alive knows exactly what transpired in the moments immediately before Trayvon was fatally shot: Zimmerman, who has claimed he fired in self-defense.

Zimmerman told police he was walking back to his SUV after a brief foot pursuit of Martin, and the teen confronted and attacked him, punching him and slamming his head into the pavement.

Arriving police said Zimmerman was bloodied. One officer wrote in a police report that he overheard Zimmerman telling a paramedic, "I was yelling for someone to help me, but no one would help me."

Angela Corey, the special prosecutor a.ssigned to the case, has yet to decide whether to charge Zimmerman, send the case to a grand jury or decide against charging.

If Zimmerman's self-defense claim is tested at trial, legal experts say a forensic identification of the voice in the 911 audio could be key evidence, either in Zimmerman's favor or to his detriment.

Still, Maine-based audio enhancement expert Arlo West says that today's juries sometimes seem reluctant to accept evidence that's any less conclusive than what they're used to seeing on television.

"I call it the 'CSI' effect," he says, referring to "CSI: Crime Scene Investigation," the popular — if not always realistic — forensics-based TV drama. "You get in front of a jury, and they expect a miracle."

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 Trayvon Martin George Zimmerman 911 call analysis: Two forensic experts say it's not George Zimmerman crying out for help - Orlando Sentinel


Last edited by BeatTycoon; 03-31-2012 at 06:11 PM..

187 comments for "Mar 31 - It's not George Zimmerman crying for help on 911 recording, 2 experts say"

 03-31-2012, 06:05 PM         #2
youknowmystelo 
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[video - click to view]

 6 years ago '04        #3
---Max-Payne--- 
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Trayvon's own father has said it's not his son screaming. Eye witness also saw Zimmerman screaming.

Martin's father, who tells police that the voice screaming is not the voice of his son.
This sh*t needs to be over with already.


Last edited by ---Max-Payne---; 03-31-2012 at 06:55 PM..
 6 years ago '11        #4
XxHeAtMaKeRxX 30 heat pts30
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"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.
Lmaooo the media is setting it up perfectly
 6 years ago '04        #5
---Max-Payne--- 
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 6 years ago '05        #6
ICG 1 heat pts
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 ---Max-Payne--- said:
Trayvon's own father has said it's not his son screaming. Eye witness also saw Zimmerman screaming.



This sh*t needs to be over with already.
but why would he be screaming?

after that video of him with the police obviously he did not get his a.ss whooped
 6 years ago '04        #7
---Max-Payne--- 
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 BlaKc said:
Cac coalition trying hard
Wtf is that supposed to mean?
 6 years ago '04        #8
---Max-Payne--- 
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 BlaKc said:
You in here defending zimmerman instead of addressing the topic
You're stupid.
 6 years ago '04        #9
---Max-Payne--- 
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 BlaKc said:
Are you going to address the article or are u gon keep leaning on anonymous witnesses?
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.
Who's more likely to know what Zimmerman sounds like? The neighbor says it's his voice because he hears it everyday. Trayvon's father says it's not his sons voice. Nothing more to say here.
 6 years ago '04        #10
---Max-Payne--- 
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The key witness said the guy with red jacket on was the one screaming for help. He ran to upstairs to his window and called 911. Just wait for the facts man, too many contradicting articles. I don't give a fu*k if Zimmerman is guilty or not, the race-baiting needs to stop.


Last edited by ---Max-Payne---; 03-31-2012 at 08:07 PM..
 6 years ago '04        #11
---Max-Payne--- 
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I'm not white or black. lol
 6 years ago '11        #12
elvisfreshly 106 heat pts106
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Trayvons mom said it was trayvons voice so
 6 years ago '06        #13
hood135 2 heat pts
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I wonder how much more evidence they need in order to arrest this piece of sh*t...
 6 years ago '10        #14
Staszy 11 heat pts11
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Experts are black and bias.


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 03-31-2012, 08:47 PM         #15
CS35 
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Blakc is cac sucker. Sucks on em daily
 6 years ago '11        #16
King Henry 547 heat pts547
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 ---Max-Payne--- said:
Who's more likely to know what Zimmerman sounds like? The neighbor says it's his voice because he hears it everyday. Trayvon's father says it's not his sons voice. Nothing more to say here.
You retarded? They can't tell if it's Trayvon's, but they know it isn't Zimmerman's.
 6 years ago '09        #17
ill 800 64 heat pts64
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 BlaKc said:
inb4whitepeoplesaytheexpertsareblackandbiased
lol@stupidpatheticblackteenagersthathavenothingbet tertodothanposeonthenet
 6 years ago '06        #18
omniscience 3 heat pts
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fu*k would ZImmerman be crying help for when he got the gat tucked away?..

If my life is in "danger" as he puts it..I'm blasting without a whimpe or peep..

sh*t ain't adding up for sonny..
 6 years ago '04        #19
---Max-Payne--- 
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 KingHenrythe2nd said:
You retarded? They can't tell if it's Trayvon's, but they know it isn't Zimmerman's.
There's a lot of conflicting stories, Idk how accurate this is.

Listen to what the key witness said in the original news video, he said he saw the guy with the red jacket screaming from his window, he locked his door and called 911.


Last edited by ---Max-Payne---; 03-31-2012 at 09:21 PM..
 03-31-2012, 09:18 PM         #20
CS35 
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 BlaKc said:
what white people think is going to happen when they see a black man

Cool story bro
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