Develop a new technique for measuring tongue and mandibular movement

人们已经使用了多种方法来观察语音中的舌头和下颌运动。然而，由于避免了过度的X射线曝光和从图像中分析数据的繁琐，通过这些技术获得的数据在数量上是有限的。该方法的基本原理是利用磁力计与放置在舌尖上的磁棒之间的距离变化引起磁力计输出的变化，将获得的模拟数据转换成数字数据，并用微型计算机软件解释磁棒的位置。声学数据与舌头和下颌的运动同步。利用该系统可以准确地评价舌和下颌骨的动态特性(位移、发音延迟、速度和累积位移)，对于无失真的舌和下颌运动的研究是有价值的，精度最高可达5.3%，以速度换算后的动态响应约为500 cm/S。由此得出结论，这种新系统是一种有用的语音生理学研究技术。

Several methods have been used to observe the tongue and mandibular movement in speech. However, data obtained by these techniques are quantitatively limited because of avoidance to excessive X-ray exposure and tediousness of analyzing data from the images. The purpose of this study is to develop a new technique for measuring tongue and mandibularmovement and to use actually.The basic principle of this method is to use the output changes induced in magnetmeters due to the changes of the distance between the magnetmeters and a magnetic rod placed on the tip of the tongue analog data obtained are converted into digital data and the position of the rod is interpreted by the software of micro computer. Acoustic data are synchronized with tongue and mandibular movement. By use of this system, the dynamic characteristics ( displacement, delay of phonetic onset, velocity and cumulative displacement) of tongue and mandibule can be exactly evaluated.It becomes clear that this measuring device is valuable for the investigation of tongue and mandibular movement without distortion and with accuracy of 5.3% at most, and dynamic response shows about 500 cm/s as a velocity converted. It is, then, concluded that this new system is a useful technique for physiological research of speech.