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Analysis of Harmonic and Subharmonic Effects in a Transversal Flute Made from Heracleum Laciniatum

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5 Author(s)

In this paper, we present an analysis of recordings of a transversal flute made from the dried stem of the Heracleum laciniatum (Tromsoe Palm or Hogweed). While the lower octave exhibits conventional harmonic spectra, the upper octave surprisingly includes subharmonic components. We believe that the subharmonic contributions are due to nonlinear oscillations of the flute material. A time-frequency analysis of the onset of the sound, shows that the subharmonic oscillators are present from the very beginning, as opposed to the higher harmonics. A bispectral analysis indicates that triplets of frequency components are phase locked

Published in:

Signal Processing Symposium, 2006. NORSIG 2006. Proceedings of the 7th Nordic

Date of Conference:

7-9 June 2006