Human vocal tract resonances and the corresponding mode shapes investigated by three-dimensional finite-element modelling based on CT measurement

摘要: AbstractResonance frequencies of the vocal tract have traditionally been modelled using one-dimensional models. These cannot accurately represent events in frequency region formant cluster around 2.5–4.5 kHz, however. Here, resonance and their mode shapes are studied a three-dimensional finite element model obtained from computed tomography measurements subject phonating on vowel [a:]. Instead traditional five, up to eight were found below prominent antiresonance 4.7 kHz. The three extra resonances correspond modes which axially asymmetric involved piriform sinuses, valleculae, transverse vibrations oral cavity. results therefore suggest that phenomenon speaker's singer's clustering may be more complex than originally thought.