ANALYSIS OF VOCAL-TRACT SHAPE AND DIMENSIONS USING MAGNETIC-RESONANCE-IMAGING - VOWELS
ANALYSIS OF VOCAL-TRACT SHAPE AND DIMENSIONS USING MAGNETIC-RESONANCE-IMAGING - VOWELS
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DOI：
10.1121/1.401949
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发表时间：
1991-08-01
影响因子：
2.4
通讯作者：
NYE, PW
中科院分区：
文献类型：
--
作者：
BAER, T;GORE, JC;NYE, PW
磁共振成像（MRI）技术被用来收集基础数据，应用于语音清晰度的计算模型。 进行了两个实验。 在实验1中，在两名男性受试者发出四点元音时，同时获得了他们的语音记录以及他们声道的轴向、冠状或中矢状MR图像。 通过对MR图像进行测量，获得描述各个管道形状的面积函数。 从这些功能中得到的数字滤波器被用来重新合成元音，并与受试者的原始录音进行感知和声学上的比较。 在实验2中，咽腔的轴向图像收集在生产的合奏九个元音。 图的横截面积与中矢状宽度的道在不同的位置在咽部内，并为不同的元音生产被用来推导出两个变量之间的函数关系。 还检查了实验1中有关口腔内正中矢状宽度与横截面积的数据。
Magnetic resonance imaging (MRI) techniques were used to gather basic data to apply in computational models of speech articulation. Two experiments were performed. In experiment 1, voice recordings from two male subjects were obtained simultaneously with axial, coronal, or midsagittal MR images of their vocal tracts while they produced the four point vowels. Area functions describing the individual tract shapes were obtained by measurements performed on the MR images. Digital filters derived from these functions were then used to resynthesize the vowel sounds which were compared, both perceptually and acoustically, with the subjects' original recordings. In experiment 2, axial images of the pharyngeal cavity were collected during the production of an ensemble of nine vowels. Plots of cross-sectional area versus the midsagittal width of the tract at different locations within the pharynx and for different vowel productions were used to derive a functional relationship between the two variables. Data from experiment 1 relating midsagittal width to cross-sectional area within the oral cavity were also examined.