Measurements of vocal tract shapes using magnetic resonance imaging
Measurements of vocal tract shapes using magnetic resonance imaging
复制标题
使用磁共振成像测量声道形状
DOI：
10.1049/ip-i-2.1992.0074
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
P. Martin
中科院分区：
文献类型：
--
作者：
A. Greenwood;C. C. Goodyear;P. Martin
磁共振成像用于确定产生五个稳定元音的说话者的声道区域函数。该数据用于声管模型，该模型由连接短的均匀部分形成，并将模型计算输出的声谱与自然语音的声谱进行比较。对于除一个元音之外的所有元音，前三个共振峰频率都获得了良好的一致性（通常在 120 Hz 内）。为了补偿测量误差，应用了优化程序，旨在调整面积以最小化所选成本函数。将加窗倒谱误差与区域的欧几里德距离惩罚相结合的成本函数可以有效地找到提供更接近的光谱匹配的区域函数，但其仍然很大程度上位于测量的估计误差范围内。这些调整后的函数提供了适合发音合成的根形状。
Magnetic resonance imaging is used to determine the vocal tract area functions of a speaker producing five steady vowel sounds. The data is used in an acoustic tube model, formed by concatenating short uniform sections, and the acoustic spectra of the computed output from the model are compared with those of natural speech. For all but one of the vowels good agreement (typically within 120 Hz) is obtained for the first three formant frequencies. To compensate for measurement errors, optimisation procedures are applied, aimed at adjusting the areas to minimise a chosen cost function. A cost function which combines a windowed cepstral error with a Euclidean distance penalty for the areas is effective in finding area functions that gave much closer spectral matches, but which still lie largely within the estimated errors of measurement. These adjusted functions provide suitable root shapes for use in articulatory speech synthesis.
影响因子：
2.4
作者：
BAER, T;GORE, JC;NYE, PW
通讯作者：
NYE, PW