Well, Zimmerman is still alive. So, perhaps he can recreate his screams for some audio engineers and jurors to analyze.
“So, perhaps he can recreate his screams for some audio engineers and jurors to analyze.”
Would make sense to me.
Maybe this will be done.
However it would be hard for any human being to reproduce the sounds he or she made while in a terrified state.
In an adrenaline-charged state, I think one's vocal cords probably behave very differently than when one is just trying to *act* terrified. I think it is unlikely one can consciously control that.