| Autor: |
Bhandari, Anand, Izdebski, Krzysztof, Huang, Cindy, Yan, Yuling |
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| Zdroj: |
Biomedical Signal Processing & Control; Jan2012, Vol. 7 Issue 1, p20-26, 7p |
| Abstrakt: |
Abstract: Vocal fold (VF) activity in sustained phonation captured through simultaneous visual observations via direct method (high speed digital imaging: HSDI) and via indirect electroglottographic (EGG) method in normal population were submitted to contrastive analysis. The quantitative parameters used to describe the dynamic properties of the VF vibration included open/closed quotients, and indices that we defined as harmonic ratios. Our analysis also included a Nyquist plot approach that we introduced previously. Results indicate that EGG tracings delivered useful results for the analysis of normal voices and derived a reasonably accurate open quotient value in comparison to the visual analysis. Moreover, recognizable Nyquist plot patterns were obtained for EGG tracings although not identical to that obtained from the HSDI-derived glottal area waveform. Therefore ipso-facto we evaluate the usefulness of EGG compared to visual data in describing specific voice characteristics of normal speakers. [Copyright &y& Elsevier] |
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Supplemental Index |
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