The same analysis also didn't reach conclusions as to whether Zimmerman used a racial epithet to describe Martin on his own 911 call, as some have alleged.
Mr. STEVE CAIN (President, Forensic Tape Analysis, Inc.): It's based probably on two issues: new equipment that we don't know about, or perhaps new procedures, new algorithms, new mathematical ways of analyzing a person's voice that are not known to the real forensic world.