Voice Experts Disagree on Screams in Zimmerman 911 Call

Was it George Zimmerman or Trayvon Martin?

A voice recognition researcher for George Zimmerman is discounting the methods of prosecution experts who claim that screams captured on a 911 call belong to 17-year-old Trayvon Martin and not to the ex-neighborhood watch volunteer.

Researcher James Wayman was called Monday evening by defense attorneys after another day of questioning of prospective jurors for Zimmerman's second-degree murder trial in the fatal shooting of Martin. One expert in a report had identified Martin as the source of the screams, and another testified at a pretrial hearing that the screams didn't match Zimmerman's voice.

Voice experts were hired by lawyers and news organizations to analyze the recordings, which were made by neighbors during the deadly altercation last year between Martin and Zimmerman in a gated townhouse community in Sanford, Fla. Thus far, experts have reached mixed conclusions about whether the screams belong to Martin or Zimmerman.