ELECTROMAGNETIC MIDSAGITTAL ARTICULOMETER SYSTEMS FOR TRANSDUCING SPEECH ARTICULATORY MOVEMENTS
ELECTROMAGNETIC MIDSAGITTAL ARTICULOMETER SYSTEMS FOR TRANSDUCING SPEECH ARTICULATORY MOVEMENTS
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DOI：
10.1121/1.404204
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发表时间：
1992-12-01
影响因子：
2.4
通讯作者：
JACKSON, MTT
中科院分区：
文献类型：
--
作者：
PERKELL, JS;COHEN, MH;JACKSON, MTT
本文介绍了两个电磁正中矢状关节测量仪（EMMA）系统，开发用于在语音产生过程中转换发音运动。交变磁场由安装在扬声器头部的组件中的发射器线圈产生。这些场在许多小换能器线圈中感应交流电压，这些小换能器线圈连接到声道内外中线平面中的发音器。传感器通过细导线连接到接收器电子设备，接收器电子设备的输出电压被处理以产生作为时间的函数的传感器位置的测量。这种方法可能会产生测量误差，因为当关节移动并改变形状时，换能器可能会相对于发射器轴发生不同程度的旋转失准;两种系统都设计用于校正换能器失准。为此，一个系统使用两个发射器和双轴换能器;另一个使用三个发射器和单轴换能器。这些系统已经在其性能、人类受试者兼容性和易用性方面进行了比较。这两种系统都可以产生关于咬合架运动的有用的中矢状面数据，并且每一种都有一组特定的优点和局限性。(Two为了比较的目的，还简要描述了商业上可获得的系统。如果使用适当的实验控制，则出于实际原因，三发射机系统是优选的。
This paper describes two electromagnetic midsagittal articulometer (EMMA) systems that were developed for transducing articulatory movements during speech production. Alternating magnetic fields are generated by transmitter coils that are mounted in an assembly that fits on the head of a speaker. The fields induce alternating voltages in a number of small transducer coils that are attached to articulators in the midline plane, inside and outside the vocal tract. The transducers are connected by fine lead wires to receiver electronics whose output voltages are processed to yield measures of transducer locations as a function of time. Measurement error can arise with this method, because as the articulators move and change shape, the transducers can undergo a varying amount of rotational misalignment with respect to the transmitter axes; both systems are designed to correct for transducer misalignment. For this purpose, one system uses two transmitters and biaxial transducers; the other uses three transmitters and single-axis transducers. The systems have been compared with one another in terms of their performance, human subjects compatibility, and ease of use. Both systems can produce useful midsagittal-plane data on articulator movement, and each one has a specific set of advantages and limitations. (Two commercially available systems are also described briefly for comparison purposes.) If appropriate experimental controls are used, the three-transmitter system is preferable for practical reasons.