15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003

A New Approach to Pressure-Sensitive Palatography Using a Capacitive Sensing Device

Mark K. Tiede (1), Joseph S. Perkell (2), Majid Zandipour (2), Melanie L. Matthies (3), Ellen Stockmann (2)

(1) Haskins Laboratories, USA
(2) Massachusetts Institute of Technology, USA
(3) Boston University, USA

In this work we report on a new type of pressure sensor and its application to palatography. The device is a flexible sheet sensitive to pressure-induced changes in capacitance with a spatial resolution of 2 mm. When mounted to a plastic palatal plate thermoformed off a subject's dental cast we have used it to record lingual palatal contact pressure from 25 distributed locations at a 40 Hz/sensor sampling rate. Because of pervasive noise and problems with calibration our results obtained using the device are preliminary, though consistent with previous work in this area.

Full Paper

Bibliographic reference.  Tiede, Mark K. / Perkell, Joseph S. / Zandipour, Majid / Matthies, Melanie L. / Stockmann, Ellen (2003): "A new approach to pressure-sensitive palatography using a capacitive sensing device", In ICPhS-15, 3149-3152.