A method of applying Fourier analysis to high-speed laryngoscopy
2001 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 110, no 6, 3193-3197 p.Article in journal (Refereed) Published
A new method for analysis of digital high-speed recordings of vocal-fold vibrations is presented. The method is based on the extraction of light-intensity time sequences from consecutive images, which in turn are Fourier transformed. The spectra thus acquired can be displayed in four different modes, each having its own benefits. When applied to the larynx, the method visualizes oscillations in the entire laryngeal area, not merely the glottal region. The method was applied to two laryngoscopic high-speed image sequences. Among these examples, covibrations in the ventricular folds and in the mucosa covering the arytenoid cartilages were found. In some cases the covibrations occurred at other frequencies than those of the glottis.
Place, publisher, year, edition, pages
2001. Vol. 110, no 6, 3193-3197 p.
VOCAL FOLD VIBRATIONS, MATHEMATICAL-MODEL, KYMOGRAPHY, CORDS
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-13262ISI: 000172731600037OAI: oai:DiVA.org:kth-13262DiVA: diva2:322975
QC 201006092010-06-092010-06-092010-06-09Bibliographically approved