A hybrid approach to the computational aeroacoustics of human voice production
A hybrid approach to the computational aeroacoustics of human voice production
复制标题
人类声音产生的计算空气声学的混合方法
DOI：
--
复制
发表时间：
2015
影响因子：
3.5
通讯作者：
A. Hüppe
中科院分区：
文献类型：
--
作者：
P. Šidlof;P. Šidlof;S. Zörner;A. Hüppe
人类发声的气动声学机制是一个复杂的耦合过程，目前还没有完全弄清楚。在这篇文章中，一个混合的数值方法来分析声音产生在人类的声音生产。首先，使用并行有限体积计算流体动力学（CFD）求解器在覆盖喉部的精细计算网格上解决流体流动问题。计算流体力学模拟运行四个几何配置：有和没有假声带，并与固定的收敛或收敛-发散运动的内侧声带表面。然后使用Lighthill的类比或声学扰动方程在覆盖喉部、声道和口附近辐射区域的粗网格上计算空气声源和声波的传播。在时域和频域中研究航空声学声源，以确定其精确的起源和与流场的相关性。用有限元法求解了声波从喉部和声道进入自由声场的传播问题。根据元音/i/和/u/的MRI声道数据，考虑并建模了两种不同的声道形状。从声学模拟评估的辐射声的频谱显示出良好的协议与共振峰频率从人类受试者。
The aeroacoustic mechanisms in human voice production are complex coupled processes that are still not fully understood. In this article, a hybrid numerical approach to analyzing sound generation in human voice production is presented. First, the fluid flow problem is solved using a parallel finite-volume computational fluid dynamics (CFD) solver on a fine computational mesh covering the larynx. The CFD simulations are run for four geometrical configurations: both with and without false vocal folds, and with fixed convergent or convergent–divergent motion of the medial vocal fold surface. Then the aeroacoustic sources and propagation of sound waves are calculated using Lighthill’s analogy or acoustic perturbation equations on a coarse mesh covering the larynx, vocal tract, and radiation region near the mouth. Aeroacoustic sound sources are investigated in the time and frequency domains to determine their precise origin and correlation with the flow field. The problem of acoustic wave propagation from the larynx and vocal tract into the free field is solved using the finite-element method. Two different vocal-tract shapes are considered and modeled according to MRI vocal-tract data of the vowels /i/ and /u/. The spectra of the radiated sound evaluated from acoustic simulations show good agreement with formant frequencies known from human subjects.
登录
查看更多内容
影响因子：
2.4
作者：
Pickup, B. A.;Thomson, S. L.
通讯作者：
Thomson, S. L.
影响因子：
2.4
作者：
Zhao, W;Zhang, C;Mongeau, L
通讯作者：
Mongeau, L
影响因子：
2.4
作者：
Scherer, RC;Shinwari, D;Afjeh, AA
通讯作者：
Afjeh, AA
DOI：
10.1121/1.1506694
发表时间：
2002-10
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Cheng Zhang;Wei Zhao;S. Frankel;L. Mongeau
通讯作者：
Cheng Zhang;Wei Zhao;S. Frankel;L. Mongeau
影响因子：
2.4
作者：
B. S. Zörner;M. Kaltenbacher;R. Lerch;A. Sutor;M. Döllinger
通讯作者：
M. Döllinger