Fredrik Wulff.

Fredrik Amadeus Wulff (February 11, 1845 in Gothenburg – December 31, 1930 in Lund) was a Swedish phonetician and philologist.

References

• (in Swedish) Lindblad, Göran. 1925. Svensk biografisk handbok, p. 832
  

  

  Chart of Wulff's phonetic transcription system from 1888. Many of the symbols would end up being used by the International phonetic alphabet (IPA), but others, such as Greek τ δ ν for dental [t̪ d̪ n̪] and π μ for [p̪ m̪], would not be. Script and rotated letters would be used by the IPA, but not bold or italic typeface. This system includes a level of phonetic detail in its letters that the IPA transcribes with diacritics.