I bet the feds can find out all of that for their hate crime investigation...then will share it with Ms. Corey....
I'd find that to be pretty amazing, honestly. Before the FBI came out with their (lack of) results from the audio comparison people were saying "Oh I bet they have Trayvon's voice from his voicemails that were recorded 20 years ago (exaggeration by me) and they'll be able to match it!" People tend to believe that the FBI has some magical power to where they can extrapolate things that normal investigators wouldn't - this isn't true.