An expert reveals that there is not telling about who the voice on the tape belongs to

Jun 7, 2013 09:55 GMT  ·  By

The 911 tape featuring the muttered screams of a man, recorded on the night of the Trayvon Martin murder could be played in court.

The prosecution and defense in the George Zimmerman trial are meeting to prepare for the beginning of the trial, which has been set for June 10. A judge will decide which pieces of evidence will be admitted in the trial.

Shawn Vincent, speaking for the O'Mara Law Group defending Zimmerman tells ABC News that they want the piece of evidence included, as they believe the screams belong to their client.

As I mentioned, there is a long-standing controversy on whether Martin was the one heard in the recording.

The defense has brought in Dr. Hirotake Nakasone, senior audio engineer with the FBI, who explains that the person yelling cannot be identified using the tape.

"The voice was outside the normal range. We know the [computer] system cannot distinguish normal speech from abnormal speech," he said.