Predicting midsagittal pharynx shape from tongue position during vowel production.
Predicting midsagittal pharynx shape from tongue position during vowel production.
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在元音产生过程中根据舌头位置预测中矢状咽部形状。
DOI：
10.1044/jslhr.4203.592
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Gore,JC
中科院分区：
文献类型：
--
作者：
Whalen,DH;Kang,AM;Magen,HS;Fulbright,RK;Gore,JC
咽部的形状对元音的声学影响很大，但直接测量这部分声道是困难的。这项研究检验了从舌头位置推断中矢状咽部形状的有效性，舌头位置更易于测量。对两名受试者(一男一女)的11个静态英语元音进行多次重复，得到矢状面正中磁共振(MR)图像。在此基础上，沿整个声道以大约3毫米的间隔测量正中矢状面宽度。然后使用回归分析来评估是否可以根据舌头上四个位置的位置和宽度测量来预测咽部宽度，即那些可能是电磁计系统的接收器线圈的位置。整个声道的可预测性相当高(乘数0.9)，除了末端(即喉部和嘴唇)和男性受试者在悬垂区域的小幅下降。分析的残差表明，预测的准确性总体上是相当高的，89.2%的误差小于2 mm。造成误差的主要原因是声道的极端，那里的核磁共振分辨率较差。对于像英语这样不明显使用高级舌根(ATR)的语言，静态元音的矢状咽部形状可以被高精度地预测。
The shape of the pharynx has a large effect on the acoustics of vowels, but direct measurement of this part of the vocal tract is difficult. The present study examines the efficacy of inferring midsagittal pharynx shape from the position of the tongue, which is much more amenable to measurement. Midsagittal magnetic resonance (MR) images were obtained for multiple repetitions of 11 static English vowels spoken by two subjects (one male and one female). From these, midsagittal widths were measured at approximately 3-mm intervals along the entire vocal tract. A regression analysis was then used to assess whether the pharyngeal widths could be predicted from the locations and width measurements for four positions on the tongue, namely, those likely to be the locations of a receiver coil for an electromagnetometer system. Predictability was quite high throughout the vocal tract (multipler> 0.9), except for the extreme ends (i.e., larynx and lips) and small decreases for the male subject in the uvula region. The residuals from this analysis showed that the accuracy of predictions was generally quite high, with 89.2% of errors being less than 2 mm. The extremes of the vocal tract, where the resolution of the MRI was poorer, accounted for much of the error. For languages like English, which do not use advanced tongue root (ATR) distinctively, the midsagittal pharynx shape of static vowels can be predicted with high accuracy.
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影响因子：
2.4
作者：
P. Rubin;T. Baer;P. Mermelstein
通讯作者：
P. Rubin;T. Baer;P. Mermelstein
DOI：
10.1121/1.414968
发表时间：
1996
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
D. Nix;G. Papcun;J. Hogden;I. Zlokarnik
通讯作者：
I. Zlokarnik
基于 MRI 的阿坎人咽部体积对比研究
DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
M. Tiede
通讯作者：
M. Tiede
影响因子：
2.5
作者：
T. Baer;J. Gore;S. Boyce;P. W. Nye
通讯作者：
T. Baer;J. Gore;S. Boyce;P. W. Nye
元音产生过程中声道的 MR 成像
影响因子：
4.4
作者：
PhD A. V. Lakshminarayanan;MS Sungbok Lee;PhD Martin J. McCutcheon
通讯作者：
PhD Martin J. McCutcheon