Development of the analyzing system for oral function

我们开发了一种采用电磁传感系统的三维舌动测量系统，该系统使用了五个小而轻的线圈。该系统被用来测量和比较正常受试者和骨骼III类受试者在日语元音(/a/、/i/、/u/、/e/和/o/)发音过程中的舌动。受试者以放松的姿势坐在椅子上，受试者的头的位置使法兰克福的水平面和地板大致平行。在实验开始之前，受试者接受了充分的元音发音练习，并安装了测量装置。对元音进行声学分析，研究元音的声学特征。受试者包括3名正常受试者(3名男性)和3名骨骼III级受试者(3名女性)，均无听力或发音障碍。1)骨性III类患者两个元音之间的距离：Wer…与正常人相比，E在前后方向较大，在垂直方向较小。2)骨性III类患者的元音到静止位置的距离大于正常人。3)两个元音之间的距离在横向上小于前后方向和垂直方向。4)骨性III类受试者5个元音的第一共振峰频率和第二共振峰频率分布均较正常受试者窄。本研究结果表明，与正常人相比，骨性III类患者在言语产生过程中，舌骨在垂直方向上的运动范围较小，在前后方向上较大。骨性III类患者5个元音的发音点在垂直方向和前后方向上均较正常人狭窄。较少

We have developed a 3D tongue movement measuring sysytem employing an electromagnetic sensing system that, uses five small and lightweight coils. This system was used to measure and compare tongue movements in normal subjects and in skeletal Class III subjects during articuration of five Japanese vowel (/a/, /I/, /u/, /e/ and /o/) sounds. The subject sat in a relaxed postsure on a chair, and the subject's head was positioned so that the Frankfurt horizontal plane and floor were approximately parallel. Before commencing the experiment, the subject was given sufficient practice at pronouncing vowel sounds with measurement device in place. The vowel sounds were acoustieally analyzed to investigate the acoustic characteristics. The subjects included three normal subjects (3 males) who had no impairments in hearing or articulation and three skeletal Class III subjects (3 females).The following results were obtained. 1) The distances between two vowels in the skeletal Class III patients: wer … More e greater in the antero-posterior direction but smaller in the vertical direction compared to those in the normal subjects. 2) The distances between the vowel and rest position in the skeletal Class III patients were greater than those in the normal subjects. 3) The distances between two vowels were smaller in the lateral direction than in the antero-posterior direction and in the vertical direction. 4) The frequency distribution of the first formant frequency and the second frequency of five vowels in the skeletal Class III subjects were narrower than that in the normal subjects. The results of this study suggest that the movement range of the tongne during speech production in skeletal Class III patients is smaller in the vertical direction and larger in the antero-posterior direction compared to that in normal people. The areas of the point of articulation of the five vowels in the skeletal Class III patients were narrower than those in normal people in the vertical and antero-posterior direction. Less