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Acoustic tube models of the human vocal tract for the university classroom
Ist Teil von
European journal of physics, 2020-11, Vol.41 (6), p.65804
Ort / Verlag
IOP Publishing
Erscheinungsjahr
2020
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Composite vessels of cylindrical tubes are often used to provide simple models of vowel formation in the human vocal tract. Already a two-tube model allows one to discuss vowel formation in the context of tube eigenmodes. In order to validate the two-tube model we use 3D printing to build a set of two single tubes and 26 two-tube composites representing different model realizations of the vocal tract. Good agreement between theory and experiment is obtained if the so-called acoustical end correction is taken into account. A better representation of human vowels requires an extension to more than two tubes; thus we took data for the construction from literature and investigate the spectra of five eight-tube models corresponding to the vowels [a:], [e:], [i:], [o:] and [u:]. The experimental work connected with the contextual applications in voice production aims to broaden the student's conceptual understanding of tube resonances depending on the geometry in a more general manner.