Voice expert: Science can't determine voice on 911 call

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Voice expert: Science can't determine voice on 911 call

Voice expert: Science can't determine voice on 911 call
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Voice expert: Science can't determine voice on 911 call

WESH - Orlando Videos 1:53 mins

A voice recognition expert was the first to take the stand in the second week of the George Zimmerman murder triaVoice expert: Science can't determine voice on 911 call

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