RESOURCES > FACILITIES > Electromagnetic Articulograph (EMA)

Electromagnetic Articulograph (EMA)




Electromagnetic articulography (EMA) is a technology used to record the movements of various articulators including lips, jaw,tongue during various speech and non-speech activities. The electromagnetic articulograph AG501 ( Carstens Medizinelec-tronik, Lenglern, Germany) is currently the most developed three-dimensional (3D)-EMA system. AG501 has 24 channels which measure the horizontal, lateral and vertical displacement of the sensors as well as their angular orientation in terms of azimuth and inclination. For recording articulatory movement using AG501, sensors are glued on the articulators of interest. Typically, for recording speech related articulatory motions, sensors are attached to several articulators on the midsagittal plane outside oral cavity.

Examples of the recorded articulation data

Select one of the cells from the below table to hear and visualize the signals from EMA for few sample speakers and sentences.

Speaker 1 - Sentence 1Speaker 1 - Sentence 2Speaker 1 - Sentence 3Speaker 1 - Sentence 4Speaker 1 - Sentence 5
Speaker 2 - Sentence 1Speaker 2 - Sentence 2Speaker 2 - Sentence 3Speaker 2 - Sentence 4Speaker 2 - Sentence 5
Speaker 3 - Sentence 1Speaker 3 - Sentence 2Speaker 3 - Sentence 3Speaker 3 - Sentence 4Speaker 3 - Sentence 5
Speaker 4 - Sentence 1Speaker 4 - Sentence 2Speaker 4 - Sentence 3Speaker 4 - Sentence 4Speaker 4 - Sentence 5

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