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Laryngeal Vibration Patterns: Machine-Aided Measurements From High-Speed Film

Laryngeal Vibration Patterns: Machine-Aided Measurements From High-Speed Film Abstract • A report is given on the development of procedures to process laryngeal highspeed films to extract the glottal waveform and other glottal measurements. The glottal waveforms that are derived by this direct method are being used to determine whether the pathological larynx is manifested in its abnormal vibratory pattern. The glottal waveforms measured by sonic-sensing pen tracing, cursor outlining, a photocell technique, and television camera scanning are presented and compared with the conventional polar planimeter method. To date, the television camera method is the most rapid procedure and can process approximately 400 frames per hour in a semiautomatic mode. This method determines the glottal area, length, and width by a combination of analog-digital circuitry and minicomputer processing. This information is being used to explicate the exact nature of the vibrational patterns produced by the normal and pathological larynges. (Arch Otolaryngol 102:407-410, 1976) References 1. Farnsworth D: High-speed motion pictures of the human vocal cords . Bell Lab Rec :203-208, 1940. 2. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: I. The normal vibratory cycle . Arch Otolaryngol :1-19, 1958. 3. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: II. Physiologic variations . Arch Otolaryngol :438-444, 1969. 4. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: III. The pathologic larynx . Arch Otolaryngol :16-35, 1960. 5. Moore GP, White FD, Frazer D, et al: Ultra high-speed photography in laryngeal physiology . J Speech Hear Res :165-171, 1962. 6. Ramsey JL: Logical techniques for glottal source measurements. AFCRL Institute Papers 48, 1964. 7. HI: High-speed photography in speech research . J Speech Hear Res :768-776, 1967. 8. Hayden EH, Koike Y: A data processing scheme for frame-by-frame film analysis . Folia rtainohP 4:168-181, 1972. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

Laryngeal Vibration Patterns: Machine-Aided Measurements From High-Speed Film

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References (11)

Publisher
American Medical Association
Copyright
Copyright © 1976 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1976.00780120055006
Publisher site
See Article on Publisher Site

Abstract

Abstract • A report is given on the development of procedures to process laryngeal highspeed films to extract the glottal waveform and other glottal measurements. The glottal waveforms that are derived by this direct method are being used to determine whether the pathological larynx is manifested in its abnormal vibratory pattern. The glottal waveforms measured by sonic-sensing pen tracing, cursor outlining, a photocell technique, and television camera scanning are presented and compared with the conventional polar planimeter method. To date, the television camera method is the most rapid procedure and can process approximately 400 frames per hour in a semiautomatic mode. This method determines the glottal area, length, and width by a combination of analog-digital circuitry and minicomputer processing. This information is being used to explicate the exact nature of the vibrational patterns produced by the normal and pathological larynges. (Arch Otolaryngol 102:407-410, 1976) References 1. Farnsworth D: High-speed motion pictures of the human vocal cords . Bell Lab Rec :203-208, 1940. 2. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: I. The normal vibratory cycle . Arch Otolaryngol :1-19, 1958. 3. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: II. Physiologic variations . Arch Otolaryngol :438-444, 1969. 4. R, von Leden H, Moore P: Laryngeal vibrations: Measurements of the glottic wave: III. The pathologic larynx . Arch Otolaryngol :16-35, 1960. 5. Moore GP, White FD, Frazer D, et al: Ultra high-speed photography in laryngeal physiology . J Speech Hear Res :165-171, 1962. 6. Ramsey JL: Logical techniques for glottal source measurements. AFCRL Institute Papers 48, 1964. 7. HI: High-speed photography in speech research . J Speech Hear Res :768-776, 1967. 8. Hayden EH, Koike Y: A data processing scheme for frame-by-frame film analysis . Folia rtainohP 4:168-181, 1972.

Journal

Archives of Otolaryngology – American Medical Association

Published: Jul 1, 1976

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