Vocal tract resonances and the sound of the Australian didjeridu (yidaki) II. Theory Hollenberg, Lloyd en_US Tarnopolsky, Alexandre en_US Wolfe, Joseph en_US Fletcher, Neville en_US Smith, John en_US 2021-11-25T13:08:32Z 2021-11-25T13:08:32Z 2006 en_US
dc.description.abstract The didjeridu (didgeridoo) or yidaki of the Australian Aboriginal people consists of the narrow trunk of a small Eucalypt tree that has been hollowed out by the action of termites, cut to a length of about 1.5 m, smoothed, and decorated. It is lip-blown like a trumpet and produces a simple drone in the frequency range 55 to 80 Hz. Interest arises from the fact that a skilled player can make a very wide variety of sounds with formants rather like those of human vowels, and can also produce additional complex sounds by adding vocalization. An outline is given of the way in which the whole system can be analyzed using the harmonic-balance technique, but a simpler approach with lip motion assumed shows easily that upper harmonics of the drone with frequencies lying close to impedance maxima of the vocal tract are suppressed, so that formant bands appear near impedance minima of the vocal tract. This agrees with experimental findings. Simultaneous vibration of the player`s lips and vocal folds is shown to generate multiple sum and difference tones, and can be used to produce subharmonics of the drone. A brief discussion is given of player preference of particular bore profiles. (c) 2006 Acoustical Society of America. en_US
dc.identifier.issn 0001-4966 en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.title Vocal tract resonances and the sound of the Australian didjeridu (yidaki) II. Theory en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.description.notePublic Author webpage: en_US
unsw.identifier.doiPublisher en_US
unsw.relation.faculty Science
unsw.relation.ispartofissue 2 en_US
unsw.relation.ispartofjournal Journal of the Acoustical Society of America en_US
unsw.relation.ispartofpagefrompageto 1205-1213 en_US
unsw.relation.ispartofvolume 119 en_US
unsw.relation.originalPublicationAffiliation Hollenberg, Lloyd en_US
unsw.relation.originalPublicationAffiliation Tarnopolsky, Alexandre, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Wolfe, Joseph, Physics, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Fletcher, Neville en_US
unsw.relation.originalPublicationAffiliation Smith, John, Physics, Faculty of Science, UNSW en_US School of Physics *
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