Feature Evaluation for Acoustic Pressure Signals from a Hybrid Simulation of Human Phonation (vor Ort)

* Presenting author
Day / Time: 23.03.2022, 18:00-18:20
Room: 47-02
Typ: Regulärer Vortrag
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Disorders of human voice production have severe effects on the quality of life of the affected individuals. To investigate the cause-effect-chain in voice production with functional-based voice disorders, three different possible disorder patterns are analyzed in form of a parameter study. These are: (i) four different variants of glottis closure, (ii) symmetric and asymmetric vocal fold movements of the same frequency, and (iii) three different subglottal pressures. By combining these parameters, 24 configurations are formed for which a validated simulation model is used to calculate the resulting sound pressure. The applied hybrid aeroacoustic approach consists of an incompressible flow simulation, from which the source term for the acoustic simulation is calculated according to the Perturbed Convective Wave Equation. Using the resulting acoustic signals at a microphone point, features from speech signal processing are evaluated. It is shown, that certain features correspond to certain disorder configurations.



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