High-speed Cineloop Ultrasound vs. Video Ultrasound Tongue Imaging: Comparison of Front and Back Lingual Gesture Location and Relative Timing.

Abstract

We compare two methods of acquiring ultrasound tongue images. A new system capable of recording directly from the cineloop image buffer at a high frame rate and which is more accurately synchronized with audio is compared with an optimised method of recording images via the NTSC video output of an ultrasound machine. As a focus for this comparison we gathered representative data on English /l from a single speaker, using a headset restraint system. Both systems performed well, but while the video system is at its limits, the cineloop system is inherently more accurate and offers greater opportunity for development.