Accuracy Assessment for AG500, Electromagnetic Articulograph

Autor/inn/en	Yunusova, Yana; Green, Jordan R.; Mefferd, Antje
Titel	Accuracy Assessment for AG500, Electromagnetic Articulograph
Quelle	In: Journal of Speech, Language, and Hearing Research, 52 (2009) 2, S.547-555 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2008/07-0218)
Schlagwörter	Speech Impairments; Foreign Countries; Articulation (Speech); Audio Equipment; Auditory Stimuli + Suchen Sie Ihr Suchwort? Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Ausland; Audio-CD; Auditive Stimulation
Abstract	Purpose: The goal of this article was to evaluate the accuracy and reliability of the AG500 (Carstens Medizinelectronik, Lenglern, Germany), an electromagnetic device developed recently to register articulatory movements in three dimensions. This technology seems to have unprecedented capabilities to provide rich information about time-varying positions of articulators. However, strengths and weaknesses of the system need to be better understood before the device is used for speech research. Method: Evaluations of the sensor positions over time were obtained during (a) movements of the calibration device, (b) manual movements of sensors in a cartridge within the recording field of the cube, and (c) various speech tasks. Results: Results showed a median error to be under 0.5 mm across different types of recordings. The maximum error often ranged between 1 and 2 mm. The magnitude of error depended somewhat on the task but largely on the location of the sensors within the recording region of the cube. Conclusion: The performance of the system was judged as adequate for speech movement acquisition, provided that specific steps are taken for minimizing error during recording and for validating the quality of recorded data. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10