Assessing the Position Tracking Reliability of Carstens’ AG500 and AG501 Electromagnetic Articulographs during Constrained Movements and Speech Tasks

This study has shown that these issues do not affect the newer AG501, which not only performs according to the manufacturer's claim of 0.3 mm dynamical accuracy within a 20-cm-wide spherical region inside the recording volume, but also performs well outside. Furthermore, while the AG500 shows perturbed trajectories in some instances, the AG501 consistently shows accurate results in reproducing the displacements of consonantal and vocalic gestures for the tested speech tasks.Our findings reveal that the AG501 is more stable and significantly more accurate than the previous model, the AG500, which, in turn, performs reasonably well only in specific limited conditions.
Source: Speech Communication - Category: Speech-Language Pathology Source Type: research