在非无声水箱中对水声器进行互惠校准:方法和实现
Liuqing Yang1,2, Yi Chen1, Yongjun Huang1
1Hangzhou Applied Acoustics Research Institute, Hangzhou, Zhejiang 311400, China.
The Journal of the Acoustical Society of America
|January 15, 2025
概括
一种新的互惠校准方法准确地测量了在有限的水域空间中的水声机电声学参数. 在非无声中采用这种空间采样技术,可以获得与标准设施相美的结果.
科学领域:
- 声学 声学 在声学方面
- 转换器校准 转换器校准
- 水下声学 水下声学
背景情况:
- 测量水声机的电声学参数对于水下声学应用至关重要.
- 传统的校准方法往往需要大型的无声设备,这限制了实际应用.
- 在封闭的水环境中,需要准确的校准方法.
研究的目的:
- 开发和验证在一个有限的,非无声水域内的连续声场中对水声机的互惠校准方法.
- 为准确的声压测量建立一个空间采样平均方法.
- 为了确定可靠校准的最佳空间采样参数.
主要方法:
- 开发了一种使用非无声中的空间采样平均值的互惠性校准方法.
- 应用赫尔姆霍尔茨方程和格林函数来建模阻抗边界条件下的声音传播.
- 建立了三传感器互惠校准程序,确定空间采样点的数量和配置 (至少6000个).
主要成果:
- 在一个15m x 9m x 6m的非无声中,成功校准了从250 Hz到10 kHz的水声机灵敏度.
- 与标准校准设备相比,开发的方法产生了0.7dB的最大差异.
- 验证了空间采样平均方法在狭小空间中对水声器校准的有效性.
结论:
- 拟议的互惠校准方法对于在有限的非无声水域中测量水机电声学参数是有效的.
- 空间采样平均技术提供了准确的声压测量,这对于可靠的校准至关重要.
- 这种方法为声器校准提供了切实可行的替代方案,在这些情况下,标准设备是不可用的或不切实际的.
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