Sign language transcription conventions for the ECHO Project BSL and NGT mouth annotations
Annika Nonhebel, Onno A. Crasborn, Els van der Kooij · Radboud Repository (Radboud University) · 2003
The annotation of the BSL and NGT material is annotated with slightly different labels and codes than the SSL material. After using the Swedish system for a while we felt that some mouth positions were missing. We thus started from scratch and tried to decide what the dimensions of the different mouth positions are (for instance lip opening, jaw opening, lip rounding, tongue protrusion) and what the extreme positions and possible combinations of these dimensions were. However the overall segmental approach is the same. Below you find a list of pictures of mouth positions, with their labels and descriptions. The illustrations below are only meant as examples of (phonetic) instantiations of these labels in one person. The positions are always related to the neutral position of the person’s personal rest position of the mouth (so called ‘neutral’ mouth). We used different labels than the Bergman & Wallin (2001) system in order to reduce confusion between the two annotation systems.