使用规范化全息和声音场分离的声扩散器的三维定向性测量)
Eric Brandão1, Efren Fernandez-Grande2, Caroline Gaudeoso3
1Acoustical Engineering, Federal University of Santa Maria (UFSM), Santa Maria-RS, Brazil.
The Journal of the Acoustical Society of America
|November 18, 2025
概括
这项研究引入了一种使用调节平面波扩张来准确测量声学扩散器的新方法. 该技术有效地描述了扩散器的导向性和扩散系数,为声学分析提供了切实可行的替代方案.
科学领域:
- 声学 声学 在声学方面
- 波浪物理学的波浪物理.
- 信号处理 信号处理
背景情况:
- 由于复杂的声音场散射,对声学扩散器的描述具有挑战性.
- 现有的方法与分散的声音场的时空依赖性作斗争.
研究的目的:
- 开发一种强大而实用的方法来测量实体尺寸的刚性声学扩散器.
- 为了能够准确地描述扩散器的导向性和扩散系数.
主要方法:
- 利用规则化的平面波扩张来进行反向问题的制定.
- 在波数域中分离事件和分散的声音场.
- 采用量身定制的波数网格用于定向性计算.
主要成果:
- 对不同扩散器几何形状的独特导向性模式的准确表征.
- 与表现出良好的协议的边界元素方法模拟进行验证.
- 提高了指向性和扩散系数估计的可靠性,具有更好的分辨率和平均值.
结论:
- 调节的平面波膨胀为声学扩散器的表征提供了一个实用而强大的替代方案.
- 该方法成功地分离了声场,并计算了3D方向性.
- 增强的空间分辨率和平均值提高了测量准确度.
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