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清华大学学报(自然科学版)  2018, Vol. 58 Issue (4): 357-361    DOI: 10.16511/j.cnki.qhdxxb.2018.22.022
  计算机科学与技术 本期目录 | 过刊浏览 | 高级检索 |
基于MRI研究相对舌体大小对个性化发音的影响
路文焕1, 冯晓艳1, HONDA Kiyoshi2, 魏建国1
1. 天津大学 软件学院, 天津 300350;
2. 天津大学 计算机科学与技术学院, 天津 300350
MRI analyses of the effects of relative tongue size on individual articulatory differences
LU Wenhuan1, FENG Xiaoyan1, HONDA Kiyoshi2, WEI Jianguo1
1. School of Computer Software, Tianjin University, Tianjin 300350, China;
2. School of Computer Science and Technology, Tianjin University, Tianjin 300350, China
全文: PDF(1654 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 相对舌体大小是评估发音模式的一个指标,它能预测舌体在口腔内部的移动性。该文基于核磁共振图像(MRI)研究相对舌体大小与舌体运动的关系,结合cine-MRI和tagged-MRI得到合成数据,其中既有发音器官轮廓信息,又有发音器官上特定点的运动信息。基于合成数据分析相对舌体大小和舌体运动情况。相对舌体大小定义为舌体面积和舌体与声道面积和的比值。在舌体表面的口腔和咽腔两部分选取一些点来计算舌体运动速度。结果显示:相对舌体越小,舌体运动速度越快。
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路文焕
冯晓艳
HONDA Kiyoshi
魏建国
关键词 核磁共振图像(MRI)语音生成相对舌体大小    
Abstract:The tongue size can be used to evaluate normal and pathological articulation since it can be used to predict the tongue mobility within the oropharyngeal cavity. This study analyzes the relationship between the relative tongue size and tongue movement based on magnetic resonance images (MRI). The cine-and tagged-MRI are combined to obtain a new dataset which has clear vocal tract and marker points. The synthesized images are then used to analyze the relative tongue size and the tongue movement. The relative tongue size is defined as the ratio of the tongue area to the tongue area plus the oropharyngeal cavity area. A few marker points are sampled on the oral and pharyngeal surfaces to calculate the mean velocity. Comparison for different genders shows that smaller tongues have faster movements.
Key wordsmagnetic resonance image (MRI)    speech production    relative tongue size
收稿日期: 2017-10-13      出版日期: 2018-04-15
ZTFLH:  R445.2  
  TN912.3  
基金资助:国家自然科学基金项目(61471259,61573254,61233009);天津市自然科学基金重点项目(16JCZDJC35400)
通讯作者: 魏建国,教授,E-mail:jianguo@tju.edu.cn     E-mail: jianguo@tju.edu.cn
作者简介: 路文焕(1973-),女,副教授。
引用本文:   
路文焕, 冯晓艳, HONDA Kiyoshi, 魏建国. 基于MRI研究相对舌体大小对个性化发音的影响[J]. 清华大学学报(自然科学版), 2018, 58(4): 357-361.
LU Wenhuan, FENG Xiaoyan, HONDA Kiyoshi, WEI Jianguo. MRI analyses of the effects of relative tongue size on individual articulatory differences. Journal of Tsinghua University(Science and Technology), 2018, 58(4): 357-361.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2018.22.022  或          http://jst.tsinghuajournals.com/CN/Y2018/V58/I4/357
  表1 实验被试基本信息
  图1 标准化前后的图像对比
  图2 正中矢面的一些解剖学标示点
  图3 cineGMRI和taggedGMRI数据的合成过程
  图4 舌体和声道下边界定义(元音/i/)
  图5 标注后得到的舌体(左)和声道(右)信息
  图6 选取的标记点示例
  表2 被试舌体的相对大小以及两部分标记点运动速度
  图7 S.C. 的口腔部分速度变化
  图8 S.C. 的咽腔部分速度变化
  图9 W.S. 的口腔部分速度变化
  图10 W.S. 的咽腔部分速度变化
  表3 各被试所有标记点的平均速度
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