Stall Warning
Reminds me of a talking depth sounder I designed many years ago for fishermen in the shallow regions of the Bering Sea. It would call out the depth on a speaker out on deck every 15 seconds - faster and with a tone when below the alarm depth.
An initial software error cause the voice to stutter on the first syllable of each depth call out when within the alarm range. That stutter got their attention!
Now, back to flying talk.