Simultaneous analysis of vocal fold vibration and transglottal airflow: Exploring a new experimental setup
2003 (English)In: Journal of Voice, ISSN 0892-1997, E-ISSN 1557-8658, Vol. 17, no 3, 319-330 p.Article in journal (Refereed) Published
The purpose of this study was to develop an analysis system for studying the relationship between vocal fold vibration and the associated transglottal airflow. Recordings of airflow, electroglottography (EGG), oral air pressure, and acoustic signals were performed simultaneously with highspeed imaging at a rate of approximately 1900 frames/s. Inverse filtered airflow is compared with the simultaneous glottal area extracted from the highspeed image sequence. The accuracy of the synchronization between the camera images and the foot pedal synchronization pulse was examined, showing that potential synchronization errors increase with time distance to the synchronization pulse. Therefore, analysis was limited to material near the synchronization pulse. Results corroborate previous predictions that air flow lags behind area, but also they reveal that relationships between these two entities may be complex and apparently varying with phonation mode.
Place, publisher, year, edition, pages
2003. Vol. 17, no 3, 319-330 p.
high-speed video, Lissajou figures, glottal airflow, glottal area, inverse filtering, pixel-based Fourier analysis
IdentifiersURN: urn:nbn:se:kth:diva-22815ISI: 000185304500005OAI: oai:DiVA.org:kth-22815DiVA: diva2:341513
QC 201005252010-08-102010-08-10Bibliographically approved