If the stall warning system was designed not to shut off at very low airspeeds....they might have clearly recognized that they were in a stall.
It certainly may have helped. If you look at the BEA animation posted earlier, none of the pilots seem to have recognised the Altitude Alert "C - Chord " was sounding continuously. It was only interrupted by "Stall Stall" right up until impact. No one attempted to cancel the noise.
That shows how ineffective a constant aural warning becomes. When work load is high, your brain filters out back ground noises and they get ignored. The stall warning needs to have another stimulus, BEA recommended a visual clue. I wish they had gone further and insisted on a hand vibrator through the side sticks as well.
The sound warning alone was ignored in this case, and was completely ineffective.