Electromagnetic Articulograph (EMA)
We do not sell the EMA ( See https://www.articulograph.de/) but the AAA app is capable of synchronously recording Carstens AG501 Articulograph with ultrasound.
Articulograph AG501
With a Dynamic positional accuracy as precise as 0.3 mm (RMS), the AG501 offers the highest available precision.
Further information can be found in our fact sheet about accuracy or in the abstract on
„A Comparative Study of the Precision of Carstens and Northern Digital Instruments Electromagnetic Articulographs“ (by Christophe Savariaux, Pierre Badin, Adeline Samson, and Silvain Gerber) 
Position sampling frequency with an exact timing rate of
1250Hz – downsampling to 250Hz prepared by program
1 MHz high speed data acquisition for slow motion data analysis
Head movement corrected 3D-Real time display
Individual service and a strong community
Application
It is widely used for linguistic and forensic research regarding numerous speech phenomena.
The Artic
ulograph is used for the assessment of speech motor behavior of individuals with Parkinson’s disease, apraxia, dysarthria, or functional speech motor problems as found in stuttering.
Non-articulatory research regards grasping movements as can be found in sign language.
In order to synchronise EMA and ultrasound a local ethernet must be configured between the PC running AAA and the PC running EMA. This may require the purchase of ethernet modules. A sybox (optional synchronisation hardware accessory) must be purchased for the EMA. The EMA Sync signal from the sybox must be recorded on a separate channel of a multichannel soundcard that also records the speech audio and the ultrasonic sync signal.
AAA then controls the EMA. clicking “Record” in AAA starts the EMA and clicking “Stop” stops the EMA. AAA notes the name of the *.pos file for that EMA recording. Once the recording session is complete. AAA can import the EMA data, assigning each *.pos file to the correct AAA recording and the sync signal is used to precisely align the EMA data with the Ultrasound and speech audio.
