Electropalatography (EPG)
Electropalatography is a method for the temporal and spatial measurement of tongue-palate contacts of test subjects during speech.
An artificial palate is produced for the test subjects, which is similar to a loose brace and is fitted with 62 electrodes that taper in the area of the front incisors. The visualisation of the contact surface of the tongue and hard palate shows where and to what extent a sound is formed (alveolar to velar contact profiles). In contrast to EMA (articulography), only full contacts between the tongue and palate are recorded in electropalatography, i.e. the movement of an active articulator towards a linguistic target cannot be recorded.
Hardware:
Standard reading system: Palate Scanner EPG3.V2 and EPG3 Serial Interface SPI.V1.0
Software:
Matlab, R, Praat, EMU-web APP