Comparison of Acoustic and Laryngeal Parameters between Healthy and Disordered Subjects
* Presenting author
In voice research and clinics various mathematical parameters are in use to describe different features of the recorded data. However, little is known about norm values of parameters and how they are affected by different pathologies such as functional dysphonia. In this work we investigate the expressiveness of in total 59 glottal area waveform (GAW) parameters (from which 33 were also calculated for the synchronously recorded audio signal). The parameters were computed for females (162 healthy, 95 disordered) and males (67 healthy, 31 disordered) whereas all disorders were functional dysphonia related. For each subject laryngeal high-speed videoendoscopy was performed applying the clinical prevalent Photron Fastcam MC2 camera (frame rate: 4000 fps, spatial resolution: 512×256 pixels). From each high-speed recording a section of 1000 Frames (=0.25 s) of preferably constant phonation with synchronously recorded audio was chosen for parameter calculation.Data analysis revealed that most parameters, for audio and GAW signal, did not show clear differences between the healthy and the pathologic groups. However, it may be possible that a more complex, nonlinear multi-parametric based approach could allow for a differentiation between healthy and disordered subjects. This project is funded by the Deutsche Forschungsgemeinschaft (grant no. 323308998).