A new method to explore the spectral impact of the piriform fossae on the singing voice: benchmarking using MRI-based 3D-printed vocal tracts.

A new method to explore the spectral impact of the piriform fossae on the singing voice: benchmarking using MRI-based 3D-printed vocal tracts.
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DOI:
10.1371/journal.pone.0102680
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Howard D
Howard D
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Delvaux B;Howard D

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梨状窝是声道下端喉前庭外侧的 2 个梨形腔。它们在声学上充当主声道的侧分支,导致人声输出的频谱为零。本研究通过比较基于 MRI 的 3D 打印声带的数值和实验结果来研究它们的频谱作用,为此引入了一种新的实验方法(基于室内声学)。这些发现支持文献中的结果:梨状窝在 4-5 kHz 区域产生一个频谱槽,并充当共振峰排斥剂。此外,这项研究通过在数字和感知上证明大梨状窝对歌唱输出的影响来扩展这些结果。
The piriform fossae are the 2 pear-shaped cavities lateral to the laryngeal vestibule at the lower end of the vocal tract. They act acoustically as side-branches to the main tract, resulting in a spectral zero in the output of the human voice. This study investigates their spectral role by comparing numerical and experimental results of MRI-based 3D printed Vocal Tracts, for which a new experimental method (based on room acoustics) is introduced. The findings support results in the literature: the piriform fossae create a spectral trough in the region 4–5 kHz and act as formants repellents. Moreover, this study extends those results by demonstrating numerically and perceptually the impact of having large piriform fossae on the sung output.
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