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Open AccessArticle

Toward Development of a Vocal Fold Contact Pressure Probe: Sensor Characterization and Validation Using Synthetic Vocal Fold Models

1
Department of Mechanical & Aeronautical Engineering, Clarkson University, Potsdam, NY 13699, USA
2
Department of Electronic Engineering, Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
3
Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
4
Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, MA 02114, USA
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(15), 3002; https://doi.org/10.3390/app9153002
Received: 15 May 2019 / Revised: 12 July 2019 / Accepted: 22 July 2019 / Published: 26 July 2019
(This article belongs to the Special Issue Computational Methods and Engineering Solutions to Voice)
Excessive vocal fold collision pressures during phonation are considered to play a primary role in the formation of benign vocal fold lesions, such as nodules. The ability to accurately and reliably acquire intraglottal pressure has the potential to provide unique insights into the pathophysiology of phonotrauma. Difficulties arise, however, in directly measuring vocal fold contact pressures due to physical intrusion from the sensor that may disrupt the contact mechanics, as well as difficulty in determining probe/sensor position relative to the contact location. These issues are quantified and addressed through the implementation of a novel approach for identifying the timing and location of vocal fold contact, and measuring intraglottal and vocal fold contact pressures via a pressure probe embedded in the wall of a hemi-laryngeal flow facility. The accuracy and sensitivity of the pressure measurements are validated against ground truth values. Application to in vivo approaches are assessed by acquiring intraglottal and VF contact pressures using a synthetic, self-oscillating vocal fold model in a hemi-laryngeal configuration, where the sensitivity of the measured intraglottal and vocal fold contact pressure relative to the sensor position is explored. View Full-Text
Keywords: vocal fold contact pressure; vocal fold collision vocal fold contact pressure; vocal fold collision
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MDPI and ACS Style

Motie-Shirazi, M.; Zañartu, M.; Peterson, S.D.; Mehta, D.D.; Kobler, J.B.; Hillman, R.E.; Erath, B.D. Toward Development of a Vocal Fold Contact Pressure Probe: Sensor Characterization and Validation Using Synthetic Vocal Fold Models. Appl. Sci. 2019, 9, 3002.

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