On-line ultrasonic technique for monitoring tongue displacements
Kenneth L. Watkin, James A. Zagzebski · The Journal of the Acoustical Society of America · 1973
A pulsed, through-transmission ultrasound system for monitoring displacements of the tongue during speech production is outlined. The technique enables on-line recording of the position of a discrete element on the dorsal surface of the tongue. A simultaneous cinefluoroscopic ultrasonic study of tongue motions resulted in excellent agreement between ultrasound data obtained with this technique and corresponding data measured from cine films.