TABLE I.
Articulator flesh point variables that comprise the post-processed synthetic (TaDA) and real (EMA) datasets that we use for our experiments. Note that the EMA dataset does not have a Tongue Root sensor, but has an extra maxillary (upper incisor) sensor in addition to the mandibular (jaw) sensor. Also, TaDA does not output explicit spatial coordinates of the velum. Instead it has a single velic opening parameter that controls the degree to which the velopharyngeal port is open. Since this parameter is not a spatial (x, y) coordinate like the other variables considered, we chose to omit this parameter from the analysis described in this paper.
| Symbol | Articulatory parameter | TaDA | MOCHA-TIMIT |
|---|---|---|---|
| UL(x,y) | Upper lip | ✓ | ✓ |
| LL(x,y) | Lower lip | ✓ | ✓ |
| JAW(x,y) | Jaw | ✓ | ✓ |
| TT(x,y) | Tongue tip | ✓ | ✓ |
| TF(x,y) / TB(x,y) | Tongue front/body | ✓ | ✓ |
| TD(x,y) | Tongue dorsum | ✓ | ✓ |
| TR(x,y) | Tongue root | ✓ | |
| VEL(x,y) | Velum | ✓ | |
| UI(x,y) | Upper Incisor | ✓ |