方向连贯性损失系数用于表征围中的散射分布
Dingding Xie1, Wouter Wittebol1, Maarten Hornikx1
1Department of the Built Environment, Eindhoven University of Technology, Eindhoven, 5600 MB, the Netherlands.
The Journal of the Acoustical Society of America
|January 27, 2026
概括
本研究引入了定向连贯性损失系数 (DCLC) 来量化声场散射. 通过区分直接声音和分散的声音组件,DCLCs有助于模拟房间中的声音传播.
科学领域:
- 声学 声学 在声学方面
- 信号处理 信号处理
背景情况:
- 围中的声场是复杂的,受到内部元素反射和散射的影响.
- 量化连贯性损失对于准确的声学建模至关重要,特别是在装饰的房间.
研究的目的:
- 引入定向连贯性损失系数 (DCLCs) 用于量化角声场连贯性损失.
- 用DCLCs开发一种用于声场重建的混合模型.
主要方法:
- 使用球形接收器采样声音场,并使用球形波膨胀分解成平面波.
- 分析装饰和空房间的定向冲动响应 (IR) 之间的时间依赖的连贯系数.
- 从连贯系数中导出DCLC来区分连贯 (镜状) 和不连贯 (散射) 声音组件.
主要成果:
- 从模拟和测量中提取了DCLC,这些模拟和测量是在不同元素分布和传感器位置的房间中进行的.
- 使用DCLCs的混合模型准确地重建了声音场,显示了与地面真实度量标准的一致性.
- 该研究验证了DCLCs对局部散射分布的表征能力.
结论:
- 定向一致性损失系数 (DCLC) 提供了一种用于量化声场散射的新方法.
- 由DCLCs指导的拟议混合模型,在复杂的声学环境中提供了改进的声音场重建.
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