Modelling of influence of velopharyngeal insufficiency on phonation of vowel /a/
نویسندگان
چکیده
The effects of velopharyngeal insufficiency (VFI) or clefting on acoustic frequency–modal characteristics of human supraglottal spaces are investigated. Finite element (FE) modelling is supported by experimental investigation using a physical model of the vocal and nasal tract fabricated by the rapid prototyping technique from the FE model. The FE model was developed from magnetic resonance images (MRI) of the subject during phonation. Finally the influence of the VFI on phonation of the vowel /a/ is numerically simulated in time domain and supported by clinical investigation.
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