Illustrations of laryngeal high-speed videoendoscopy

February 21, 2017

Check out some examples of high-speed videoendoscopy of various qualities produced (modal, breathy, glottalized).

Center for Laryngeal Surgery and Voice Rehabilitation
Massachusetts General Hospital
1 Bowdoin Square, 11th Floor
Boston, MA 02114
Co-Directors: Steven M. Zeitels, MD, and Robert E. Hillman, PhD
Date of session: January 30, 2007

Recording of a sustained /i/-like phonation (vowel approximates to /ae/) including phonation offset. Adult male with no signs or history of voice pathology. Recorded at Massachusetts General Hospital, Center for Laryngeal Surgery and Voice Rehabilitation.

Filename: high-speed excerpt.avi
File format: Microsoft AVI (audio video interleave) with Cinepak Codec compression
File size: 52,271,836 bytes (~50 MB)
High-speed video frame rate: 4,000 frames per second (frame duration = 250 microseconds)
Light exposure duration per frame: 248 microseconds
Spatial resolution: 320 x 480 pixels

Questions/feedback to:
Daryush Mehta, PhD
http://scholar.harvard.edu/dmehta

normal.avi9.1 MB
breathy.avi13.32 MB
glottalized.avi13.32 MB
high-speed_excerpt.avi49.85 MB
high-speed_excerpt_2_cycles.avi9.1 MB