Acoustics: The vocal tract and the sound of a didgeridoo

@article{Tarnopolsky2005AcousticsTV,
  title={Acoustics: The vocal tract and the sound of a didgeridoo},
  author={Alex Z Tarnopolsky and Neville H. Fletcher and Lloyd C L Hollenberg and Benjamin Lange and John Smith and Joe Wolfe},
  journal={Nature},
  year={2005},
  volume={436},
  pages={39-39}
}
The Australian didgeridoo (or yidaki in the Yolngu language of northern Australia) is a simple musical instrument that, at the lips of an experienced player, is capable of a spectacular variety of timbres — considerably greater than those that can be coaxed from orchestral instruments, for example. To understand this phenomenon, we simultaneously measured the sound produced by the didgeridoo and the acoustic impedance of the player's vocal tract. We find that the maxima in the envelope of the… 
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TLDR
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