Abstract
A specially devised fiberscope by use of a thin flexible fiber-optics cable was inserted through the nose in order to observe the laryngeal conditions in the course of unperturbed speech utterances. Glottal conditions during various phonatory and articulatory activities have been visually inspected and photographed. The flexible optical cable with its tip is 5.6 mm in diameter. The hard tip, 15 mm in length, houses inside an objective lens designed for a straightforward view. Glass fibers of 15 μ are used for an image guide, and the size of the image on the photographic film is 5.6×5.6 mm2. The insertion of the optical cable does not cause any discomfort unless the nasal cavity of the subject is particularly narrow. When the scope reaches near the level of the epiglottis, the larynx is readily visible and the scope can be kept in position with a good stability. Cinefilm of the larynx obtained by this fiberscope with simultaneous sound recording will be shown at the meeting.
Showing the abstract — retrieve the full paper via the Exa API.