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物理模型中的声道共振带宽与传输线模拟相比
Peter Birkholz1, Rémi Blandin1, Steffen Kürbis1
1Institute of Acoustics and Speech Communication, TU Dresden, Dresden, 01062, Germany.
The Journal of the Acoustical Society of America
|June 12, 2023
概括
声道模型的模拟低估了现实世界的声学损失. 为了准确的声道模拟,需要改进粘度和辐射的模型.
科学领域:
- 声学 声学 在声学方面
- 语音科学 语言科学
- 生物医学工程 生物医学工程
背景情况:
- 传输线模型用于模拟声道声学.
- 准确的建模需要考虑各种损失机制,如粘度和辐射.
- 以前的模型可能无法完全捕捉物理声道共振器的复杂性.
研究的目的:
- 为了比较模拟的共振带宽与物理3D打印声道模型的模拟带宽.
- 在输电线路模拟中评估不同损失模型的准确性.
- 在声道的声学模拟中确定需要改进的领域.
主要方法:
- 3D打印了三种类型的物理共振器:基于MRI的直管和两管近似.
- 传输线模型模拟了共振带宽,使用粗略和详细的损失模型.
- 模拟带宽与物理共振器的测量结果进行了比较.
主要成果:
- 共振带宽从粗略的模拟系统地增加到详细的模拟,然后到管子共振器,最后到基于MRI的共振器.
- 模拟损失,特别是简化的近似,被发现低估了物理共振器的实际损失.
- 在模拟和测量带宽之间存在差异,突出了当前模型的局限性.
结论:
- 目前在传输线模拟中的简化损失模型低估了物理声道共振器中的声损失.
- 更现实的声学模拟需要改善粘性和辐射损失的模型.
- 这项研究强调了准确的损失建模对于语音生产研究的重要性.
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