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Tue May 7, 2013, 03:25 PM

 

George Zimmerman's lawyer challenges use of voice experts at trial

Source: Reuters

A lawyer for a Florida man charged in the shooting death of unarmed black teenager Trayvon Martin is asking a judge to bar voice-recognition experts from testifying at his murder trial on grounds their techniques are not scientifically valid.

Prosecutors are expected to call audio experts to testify in the trial of George Zimmerman to analyze a 911 call made during the night when Martin was shot and killed. Zimmerman, a neighborhood watch captain, goes on trial June 10 on charges of second-degree murder.

One potential piece of evidence is expected to be a 911 call in which screams for help can be heard in the background during an altercation between Zimmerman and Martin before the shooting.

Zimmerman's family and supporters claim the voice is his, while Martin's parents insist the voice belongs to their son.

Read more: http://www.reuters.com/article/2013/05/07/us-usa-florida-shooting-idUSBRE94600120130507



Does anyone here know the name of the technique used by the Sentinel's experts?

16 replies, 1635 views

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Arrow 16 replies Author Time Post
Reply George Zimmerman's lawyer challenges use of voice experts at trial (Original post)
Jake Izzy May 2013 OP
zerosumgame0005 May 2013 #1
Jake Izzy May 2013 #2
DallasNE May 2013 #4
Tempest May 2013 #6
Tempest May 2013 #5
chillfactor May 2013 #3
Tempest May 2013 #7
Tempest May 2013 #8
John2 May 2013 #9
RantinRavin May 2013 #11
LanternWaste May 2013 #15
RantinRavin May 2013 #10
Boabab May 2013 #12
Solomon May 2013 #13
ZombieHorde May 2013 #14
rug May 2013 #16

Response to Jake Izzy (Original post)

Tue May 7, 2013, 03:37 PM

1. Humm, georgie

 

Taking this tact sure does seem to look like you don't like what you already know the answer would be...

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Response to zerosumgame0005 (Reply #1)

Tue May 7, 2013, 03:41 PM

2. Or maybe they think it's too risky to rely on a flawed technique

 

If I am 100% sure that the screaming voice in a tape is mine, then it would make sense to me to be against an identification technique that I consider flawed, or "scientifically invalid" as they claim.

What would you do if you thought you were the one screaming, and the other party were trying to use a technique that you considered flawed for identification purposes?

The fact that the former FBI expert could not determined whose voice it was casts doubt on whether the Sentinel's experts used a reliable technique. Don't you agree?

Or maybe it was the FBI guy using the wrong technique. But how are we to know?

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Response to Jake Izzy (Reply #2)

Tue May 7, 2013, 05:14 PM

4. There Has To Be A Court History On Such Testimony

So what is it, including the appeal history. Since the attorney did not quote a court ruling that the technique is "scientifically invalid" then I think all he is doing here is attempting to plant a seed of doubt in the jury pool's mind regarding certain testimony. Normally we have dueling experts that render the technique as unproven or at least weak and inconclusive and that could still play out here.

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Response to DallasNE (Reply #4)

Tue May 7, 2013, 05:38 PM

6. O'Mara has been trying to poison the jury pool for some time

It started when he flashed a photoshopped picture of Zimmerman's "wounds". To date, MOM has not entered the photo into evidence.

And it continued when MOM did the TV talk show tour. And amplified by Robert Zimmerman's racist tweets.

The experts on the prosecution's list have given testimony in court before. They will be allowed by Nelson.

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Response to Jake Izzy (Reply #2)

Tue May 7, 2013, 05:36 PM

5. Here's the lowdown

Trayvon's voice couldn't be validated because the experts didn't have a voice sample.

They had a voice sample of Zimmerman's and they concluded the voice could not have belonged to him.

The experts have over 250 court cases between them and they work for different companies utilizing different techniques. The experts are NOT the same ones used by the Sentinel.

Nelson will allow the testimony.

Also, Zimmerman's father said it was his son's voice because he heard him scream like that before WHEN GEORGE WAS A TEENAGER. The father admitted it was a teenager's voice.

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Response to Jake Izzy (Original post)

Tue May 7, 2013, 03:41 PM

3. I believe it is called....

TrakMate GPS Tracking Unit for Active and Passive GPS monitoring capabilities, supported by a DualTrak RF system

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Response to Jake Izzy (Original post)

Tue May 7, 2013, 05:45 PM

7. Zimmerman's evidence problem (and his credibility problem)

Zimmerman told police he continued screaming after firing the shot because he thought he missed Martin.

On the tape the scream STOPS AS SOON AS THE SHOT IS FIRED.

No jury is going to believe Zimmerman's story when the evidence is superimposed against his statements to police.

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Response to Jake Izzy (Original post)

Tue May 7, 2013, 05:48 PM

8. O'Mara knows it is Trayvon screaming on the tape

Defense attorney Mark O’Mara said Tuesday that a 911 call could be the key piece of evidence in the case against George Zimmerman. In the background of the audio recording, you can hear someone screaming for help.

If it’s Zimmerman, O’Mara said it shows that the night watchman was the one under attack “and documents his story completely — it also documents his injuries.” If, however, it’s 17-year-old Trayvon Martin’s voice on the recording, then it could show Zimmerman was “acting in a very aggressive way toward him,” O’Mara said.

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Response to Tempest (Reply #8)

Tue May 7, 2013, 06:58 PM

9. I think the

 

size and weight of both participants should matter. Zimmerman is also an adult male while Trayvon was a teenager. He used Trayvon's height to compensate for the difference in weight and size. I find that ludicrous, Trayvon overpowered him, to the point he was yelling for help. And given his desire to be a police officer and evidence of his aggressive behavior in the past, doesn't add up to his personality. And not only this, he was able to get his gun and shoot Trayvon. His claim was Trayvon overpowered him yet he was able to wrestle a gun away from the kid in a struggle? That is his claim we are suppose to believe? He was the one followed Trayvon and got out of the car. Apparently, he wasn't afraid of Trayvon when he approached him if he thought the kid's size was a physical threat. his attitude that he was up to no good says it all. So all of a sudden when he encounters him face to face, he is afraid?

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Response to John2 (Reply #9)

Tue May 7, 2013, 07:11 PM

11. Size and age is irrelevant

Look back a couple of days to the story of the teenage soccer player that punched a referee. The referee died...

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Response to RantinRavin (Reply #11)

Wed May 8, 2013, 11:42 AM

15. A firearm does tend to make a gunshot victim's age and size irrelevant...

"Size and age is irrelevant..."

A firearm does tend to make a gunshot victim's age and size irrelevant... at least in the context of the bullet's forward motion, drag resistance, and angle of impact. A bullet will rarely discriminate against unarmed teens visiting their parents...

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Response to Jake Izzy (Original post)

Tue May 7, 2013, 07:08 PM

10. The job of any good defense attorney

is to attempt to prevent any evidence that may be harmful to their client from being introduced.

This is nothing more than standard practice.

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Response to Jake Izzy (Original post)

Tue May 7, 2013, 07:38 PM

12. As time goes by, it becomes clearer and clearer

that there are major problems with the gz "official" story.

The voice experts had established with a high degree of certainty that the voice calling for help was NOT gz. Naturally, o'mara doesn't want that type of testimony to be heard. I think the judge will deny this motion.

This is becoming an open-and-shut case. Hopefully, the jury will see if that way.

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Response to Jake Izzy (Original post)

Wed May 8, 2013, 10:57 AM

13. LOL. Another post trying to keep hope alive for Zimmerman.

If that were Zimmerman's screams his lawyer wouldn't be trying to keep experts from testifying. One thing's for sure: nothing he can do to stop mother from saying its Trayvon's voice screaming on that tape.

There won't be a trial. Zimmerman will cop a plea to 2nd degree if the prosecutors let him.

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Response to Jake Izzy (Original post)

Wed May 8, 2013, 11:30 AM

14. That doesn't look good for him.

It doesn't mean he's lying, but it looks like he's lying.

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