I don't know.
So. You know , third formant  I if you imagine that to first order what happens with , uh , changing vocal tract is that , uh , the formants get moved out by some proportion
Mm - hmm.
So , if you had a first formant that was one hundred hertz before , if the fifty  if the vocal tract is fifty percent shorter , then it would be out at seven fifty hertz , and so on. So , that 's a move of two hundred fifty hertz. Whereas the third formant which might have started off at twenty - five hundred hertz , you know , might be out to thirty - seven fifty , you know so it 's at  So , although , you frequently get less distinct higher formants , it 's still  third formant 's kind of a reasonable compromise , and