使用刚性球形麦克风阵列的时间域声音场重建
Peihong Jiang1, Zhigang Chu1, Yang Zhao1
1College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, People's Republic of China.
The Journal of the Acoustical Society of America
|April 24, 2024
概括
这项研究引入了一种用于声学全息的新型时间域方法,使低延迟声场重建成为可能. 这种方法提高了非静止声场的准确性和实时能力.
科学领域:
- 声学 声学 在声学方面
- 信号处理 信号处理
- 计算物理 计算物理
背景情况:
- 传统的频域声学全息技术面临着与非静止声场和时间频率转换问题的局限性.
- 准确的声音场重建对于源识别和声学分析至关重要.
研究的目的:
- 为内部球形近场声学全息绘制开发一个时间域方法.
- 为了实现时间域声音场的低延迟重建,包括事件和分散组件.
- 为了实现非静止声场的实时声学分析.
主要方法:
- 使用刚性球形麦克风阵列进行测量.
- 通过频域对应的反里埃变换来导出时间域辐射传播器.
- 作为有限脉冲响应 (FIR) 过器实现的传播器用于样本逐样本处理.
主要成果:
- 成功重建了发生压力,发生辐射粒子速度和总压力场.
- 与频域方法相比,证明了更高的准确性和更低的延迟.
- 避免了球形贝塞尔函数的零值,以及对粒子速度测量的需求.
结论:
- 拟议的时间域方法为实时声学全息提供了显著的优势.
- FIR波器的实现确保了动态声场的高效准确的重建.
- 这种具有成本效益的方法提高了在声学中的实际应用的潜力.
相关概念视频
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