Numerical investigation of effects of incisor angle on production of sibilant /s/.
Numerical investigation of effects of incisor angle on production of sibilant /s/.
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DOI：
10.1038/s41598-021-96173-2
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发表时间：
2021-08-18
影响因子：
4.6
通讯作者：
Tsubokura M
中科院分区：
文献类型：
--
作者：
Lu H;Yoshinaga T;Li C;Nozaki K;Iida A;Tsubokura M
采用隐式可压缩流求解器研究了切牙倾角对摩擦辅音/s/发音的影响。为了减少声道几何图形的网格生成时间，采用了分层网格结构。采用自适应切换时间步进方案模拟/s/发音过程中的气流和声音，并将切牙在声道内的角度从正常位置改变到30°。结果表明，增大切牙角度会影响气流形态，移动高湍流强度区域的位置，从而降低8 ~ 12 kHz频率范围内的声幅值。对速度波动进行傅里叶变换，发现当切牙角度增大时，10 kHz时速度较大的位置向唇出口移动。另外，单独的声学模拟表明，潜在声源位置的移动降低了8 kHz以上的远场声幅值。这些结果提供了必要的潜在见解，以设计牙义齿生产的摩擦声。
The effects of the inclination angle of the incisor on the speech production of the fricative consonant /s/ was investigated using an implicit compressible flow solver. The hierarchical structure grid was applied to reduce the grid generation time for the vocal tract geometry. The airflow and sound during the pronunciation of /s/ were simulated using the adaptively switched time stepping scheme, and the angle of the incisor in the vocal tract was changed from normal position up to 30°. The results showed that increasing the incisor angle affected the flow configuration and moved the location of the high turbulence intensity region thereby decreased the amplitudes of the sound in the frequency range from 8 to 12 kHz. Performing the Fourier transform on the velocity fluctuation, we found that the position of large magnitudes of the velocity at 10 kHz shifted toward the lip outlet when the incisor angle was increased. In addition, separate acoustic simulations showed that the shift in the potential sound source position decreased the far-field sound amplitudes above 8 kHz. These results provide the underlying insights necessary to design dental prostheses for the production of sibilant fricatives.
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影响因子：
2.4
作者：
HAMLET, SL;CULLISON, BL;STONE, ML
通讯作者：
STONE, ML
影响因子：
--
作者：
Snow, WB
通讯作者：
Snow, WB
DOI：
10.1098/rspa.1952.0060
发表时间：
1952-01-01
影响因子：
--
作者：
LIGHTHILL, MJ
通讯作者：
LIGHTHILL, MJ
影响因子：
7.6
作者：
BURNETT, CA;CLIFFORD, TJ
通讯作者：
CLIFFORD, TJ
影响因子：
2.9
作者：
Fonteyne, Ester;Van Doorne, Luc;De Bruyn, Hugo
通讯作者：
De Bruyn, Hugo