Document Type

Conference Proceeding



Format of Original

5 p.

Publication Date



Institute of Electrical and Electronics Engineers (IEEE)

Source Publication

Third International Conference on Audio, Language and Image Processing (ICALIP)

Source ISSN


Original Item ID

doi: 10.1109/ICALIP.2012.6376628


This paper introduces a new method to track articulator movements, specifically jaw position and angle, using 5 degree of freedom (5 DOF) orientation data. The approach uses a quaternion rotation method to accomplish this jaw tracking during speech using a single senor on the mandibular incisor. Data were collected using the NDI Wave Speech Research System for one pilot subject with various speech tasks. The degree of jaw rotation from the proposed approach is compared with traditional geometric calculation. Results show that the quaternion based method is able to describe jaw angle trajectory and gives more accurate and smooth estimation of jaw kinematics.


Accepted version. © 2012 IEEE. Reprinted, with permission, from An Ji, Michael T. Johnson and Jeffrey Berry, "Tracking Articulator Movements Using Orientation Measurements," Proceedings of the Third International Conference on Audio, Language, and Image Processing, 2013.

This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Marquette University’s products or services. Internal or personal use of this material is permitted.

However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.