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National Repository of Grey Literature 1 records found  Search took 0.02 seconds. 
Analysis of the influence of piriform sinus on vocal tract acoustic characteristics
 Radolf, Vojtěch
An analysis of several testing mathematical models and human vocal tract model with piriform sinus (PS) cavities was done. The method used was based on 1D acoustic wave equation, considering viscous losses, radiation impedance losses and applied on conical elements in frequency domain. The analysis revealed that the 1D model is able to capture differences in acoustic variables of the vocal tract modified with PS. Nevertheless the model includes PS of very small dimensions (9 mm in depth) that generate spectral changes far away from frequency band 4-5 kHz as Dang&Honda (1996) observed with their models including PS up to 20 mm in depth.
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