Simulations of acoustic properties for the nasal and paranasal cavities and attempts of validation by acoustic measurements
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- Yuki Fukushima
- Chiba Institute of Technology
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- Motoharu Tajima
- Chiba Institute of Technology
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- Takemoto Hironori
- Chiba Institute of Technology
Bibliographic Information
- Other Title
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- 鼻副鼻腔の音響特性の計算と計測による検証の試み
Abstract
<p>The finite-difference time-domain method can calculate acoustic properties of the geometrical model of the nasal and paranasal cavities extracted from CT data. The calculation results are validated by acoustic measurements of the physical model constructed from the same CT data. The measurements, however, have been unsuccessful. This is because measurement signals input through the nostrils are not observed at the glottis with a sufficient signal-to-noise ratio. To overcome this problem, an exponential horn which can supply measurement signals with high amplitude and a physical model with thick wall to depress the wall vibration were introduced in the present study. As a result, a transfer function was successfully measured, to evaluate the calculated one. The evaluation implied that fine structure of the paranasal cavities could not be reproduced with sufficient accuracy in the physical model.</p>
Journal
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- Proceedings of the Technical Committee on Speech Communication
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Proceedings of the Technical Committee on Speech Communication 3 (2), n/a-, 2023-02-24
The Technical Committee on Speech Communication,the Acoustical Society of Japan
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Details 詳細情報について
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- CRID
- 1390299151931062528
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- ISSN
- 27582744
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Allowed