High-speed digital imaging of vocal fold vibration.
A new method of digitally imaging vocal fold vibration using a solid-state image sensor attached to a conventional camera system is reported. The obtained image signals are stored in an image memory in combination with a personal computer through a high-speed A/D converter. The maximum frame rate for analysis is 4000 fps. After storage of data, images can be reproduced and displayed on a monitor screen as a form of slow-motion display. The system has proved useful for clinical examination of pathological vocal fold vibration.
Hirose
H
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Research Institute of Logopedics and Phoniatrics, Faculty of Medicine, University of Tokyo, Japan.
D000703:Analog-Digital Conversion; D003952:Diagnostic Imaging / Q000379:methods*; D006801:Humans; D008297:Male; D008838:Microcomputers; D010781:Photography; D014732:Vibration; D014741:Video Recording; D014827:Vocal Cords / Q000033:anatomy & histology* / Q000502:physiology