You are determined to cling to the acoustics "evidence" no matter what. Not surprising given that you have no real evidence to support your cause.
Michael Griffith says there was a shooter on top of the linen truck. And that "possibly" the Babushka Lady shot JFK with a gun camera (or camera gun, whatever). And he believes Garrison's claims about triangulated fire, the plan developed by Ferrie, Shaw and Oswald that was then supposedly carried out by the CIA. And the Mob. And others. And he believes JFK was shot from the front in the head. And shot from the front in the neck.
But the HSCA acoustics analysis, which he also says he believes, concluded there were two shooters: one shooting from the TSBD and a second from behind the fence. Two shooters. Four shots.
Nothing in their analysis - which again he says he believes - concluded there was a shooter on the linen truck. Or that Babushka Lady fired a shot. Or that there were shooters from three locations, i.e., triangulation, or a shooter from the front who shot JFK the neck/throat and a shooter or a shot from the front who inflicted the head wound.
His arguments are a mish mash of claims and counter-claims and arguments that contradict other arguments. His conspiracy is a jumble of ideas and thoughts and allegations that make no sense, are at odds with each other. It's like he's playing "JFK Assassination: the Game" where the person who propose the most claims, whether they make sense or not, somehow wins.