First of all, if the Martins say the voice is their son's, and experts prove that it isn't, the Martins' testimony won't carry more sway.
Yes, because there has never been a jury member to be skeptical, or totally dismiss what a so-called "expert" has to say, especially in regards to something with such
solid scientific backing as comparing background screams in a 911 call to a foreground speaking voice. Not to mention, didn't the FBI already do their own "expert" analysis on the voice samples and conclude that the samples had too few words, were of too poor quality, and not similar enough (screaming vs. speaking) to conclude whether or not it was GZ's voice? Doesn't appear the FBI was able to "prove" this, so I'm not sure who the prosecution might offer that has even greater expertise.
Speaking of, it's been over a year later, and still no word of any voice samples of TM having been given to the defense, or existing at all. Where are these voice samples? Have they not had enough time to locate any? One of the original "experts" that made the news saying the voices weren't GZ's was supposed to be receiving a sample from TM's reps and releasing his findings upon doing so. Why have those findings never been released?
That's just silly. That would be like saying the Martins could refute the ballistics report because their testimony wouldn't be boring, technical "mumbo jumbo" (also known as science).
Silly like the jurors at the OJ case dismissing the following?
DNA analysis of blood found on a pair of Simpson's socks found in his bedroom identified it as Nicole Brown's. The blood had DNA characteristics matched by approximately only one in 9.7 billion, with odds rising to one out of 21 billion when compiling results of testing done at the two separate DNA laboratories. Both socks had about 20 stains of blood.
I'm sure the jurors came up with a much more accurate explanation for OJ's socks having 20 stains of his ex-wife's blood on them, and the odds of that blood NOT being his wife being 1 out of 21 billion people (when there were less than 6 billion people on the entire planet), than OJ having anything to do with the murder.
If science like that can be dismissed, then it's just "silly" to think that any sort of
science conclusively linking (or separating) the voices in the background of a 911 call to a foreground speaking voice could also be dismissed. Especially when factoring in that "hearing", rather than DNA blood analysis, IS something that humans can inherently identify/detect.
Secondly, even if the Martins' testimony was somehow important to this issue (it's not), that still doesn't explain why they need to be impeached as witnesses. Their bias against Zimmerman is obvious.
The bias is understandable, but to assume they're
lying should not be the default assumption of a jury member. It seems the defense may imply Tracy Martin is lying about not initially telling the officers that he did not recognize the screaming voice in the background of the 911 calls as his son.
It will be audio experts who who provide the factual basis for that claim, not the Martins. That's why trials have expert testimony as opposed to just family members of the victim offering their opinions.
If my understanding of the FBI's previous analysis is accurate, then I doubt that's the case. If the prosecution does go that route, then they can easily reference the FBI's failed attempts to link the voices, and the reasons why they failed.
Serino never claimed Zimmerman's injuries were consistent with his story, so I'm not sure why you think something that never happened will be presented to the jury.
Taking a page out of your past book "Oh, we both know that Serino was talking about GZ's story", and not some random, hypothetical "life-threatening event" (which is closer to Serino's quote).
Nothing more than post hoc rationalizations have been offered, and the bizarre assertion that the parents of the victim somehow need to be impeached as witnesses just in case the jury didn't already know they might be biased against the man they believe murdered their child.
The jury isn't supposed to
assume anything, nor should the attorneys leave it up to faith that the jurors
will assume anything. Not to mention, this isn't just about "bias", it's about lying about past statements, specifically Tracy Martin's, in regards to who he felt wasn't screaming.
Yeah, I'm sure it will be the case-cracker.
There has been zero implication of that.