Accuracy Assessment for AG500, Electromagnetic Articulograph
Accuracy Assessment for AG500, Electromagnetic Articulograph
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DOI：
10.1044/1092-4388(2008/07-0218
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发表时间：
2009-04-01
影响因子：
2.6
通讯作者：
Mefferd, Antje
中科院分区：
文献类型：
--
作者：
Yunusova, Yana;Green, Jordan R.;Mefferd, Antje
目的：本文的目的是评估AG500（Carstens Medizinelectronik，Lenglern，德国）的准确性和可靠性，这是一种最近开发的用于三维记录发音运动的电磁设备。这项技术似乎有前所未有的能力，提供丰富的信息，随时间变化的位置的关节。然而，在将该设备用于语音研究之前，需要更好地了解该系统的优点和缺点。方法：在（a）校准设备的移动，（B）在立方体的记录场中手动移动墨盒中的传感器，以及（c）各种语音任务期间，获得传感器位置随时间的评估。结果：结果显示，在不同类型的记录中，中位误差小于0.5 mm。最大误差往往介于1和2 mm之间。误差的大小取决于一些任务，但在很大程度上的记录区域内的cube.Conclusion：该系统的性能被判断为足够的语音运动采集，只要采取具体的步骤，以尽量减少记录过程中的错误和验证记录数据的质量。
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.