You are perfectly correct, so long as the CVR continues to record for a few seconds after the initial pressure wave from either an explosion or explosive decompression.
Keep in mind- some still believe the CVR is a tape recorder- the unit specifically shown as recovered - and in apparently good condition is a solid state device as described on the label.
As to the initial pressure wave- positive or negative- unless the explosion happened to immediately sever both power and multiple mike data lines at the same time, some trace should be available.
Ditto for a structural failure unzipping of aft section- which **might** give a few milliseconds more of data before both data and power lines are pulled apart.
yet the press and supposedly officials are saying definitely an explosive device ???
So why are there NO pics of jackscrew and horiz stab ' wingbox ' ??
