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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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  • Bertrand Delvaux
  • David Howard

Abstract

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.

Suggested Citation

  • Bertrand Delvaux & David Howard, 2014. "A New Method to Explore the Spectral Impact of the Piriform Fossae on the Singing Voice: Benchmarking Using MRI-Based 3D-Printed Vocal Tracts," PLOS ONE, Public Library of Science, vol. 9(7), pages 1-15, July.
    • Handle: RePEc:plo:pone00:0102680
    DOI: 10.1371/journal.pone.0102680
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    1. Kiyoshi Honda & Tatsuya Kitamura & Hironori Takemoto & Seiji Adachi & Parham Mokhtari & Sayoko Takano & Yukiko Nota & Hiroyuki Hirata & Ichiro Fujimoto & Yasuhiro Shimada & Shinobu Masaki & Satoru Fuj, 2010. "Visualisation of hypopharyngeal cavities and vocal-tract acoustic modelling," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 13(4), pages 443-453.
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    Cited by:

    1. Mario Fleischer & Alexander Mainka & Steffen Kürbis & Peter Birkholz, 2018. "How to precisely measure the volume velocity transfer function of physical vocal tract models by external excitation," PLOS ONE, Public Library of Science, vol. 13(3), pages 1-16, March.

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    1. Mario Fleischer & Alexander Mainka & Steffen Kürbis & Peter Birkholz, 2018. "How to precisely measure the volume velocity transfer function of physical vocal tract models by external excitation," PLOS ONE, Public Library of Science, vol. 13(3), pages 1-16, March.

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