According to two forensic experts, it is not George Zimmerman who is screaming in the Trayvon Martin 911 call recording, as was claimed by the shooter.
The forensic experts have analysed the 911 audio call recording of George Zimmerman he made before shooting Trayvon Martin, and according to these experts, it is not George Zimmerman's screams which are in that recording.
Initially, George Zimmerman claimed that it was him who was screaming in the 911 call recording of the day Trayvon Martin was shot. However, the forensic experts say that they have determined that it is not Zimmerman who is screaming in the recordings.
One of the forensic experts, Tom Owen, a consultant for Owen Forensic Services LLC and chair emeritus for the American Board of Recorded Evidence, said that his results had determined that it was indeed not Zimmerman's voice.
Owen, who is also a court qualified expert witness and former chief engineer for the New York Public Library's Rodger's and Hammerstein Archives of Recorded Sound, said that he used software called Easy Voice Biometrics to compare Zimmerman's voice to that 911 call recording. Owen told a newspaper that the software compared the screams to Zimmerman's voice and returned a 48 percent match. He said he would expect a match of higher than 90 percent, considering the quality of the audio.
"As a result of that, you can say with reasonable scientific certainty that it's not Zimmerman," Owen told the reporters.
Owen also said that he could not confirm that the voice was that of Trayvon's because he did not have a sample of his voice.
Another forensic expert, by the name of Ed Primeau, also gave his opinion. Ed Primeau is a Michigan-based audio engineer and forensic expert and said that he used audio enhancement and human analysis and came to the conclusion that it was not Zimmerman who was screaming in the video.
"I believe that's Trayvon Martin in the background, without a doubt," Primeau told the newspaper. "That's a young man screaming."
The analysis of these two experts has further weakened the case of George Zimmerman, the self-appointed, neighborhood watch captain who alleges that Trayvon Martin, a 17-year-old Florida teen, attacked him. Zimmerman said that he screamed for help as Martin beat him, and that he later shot Trayvon Martin in self-defense.