基于定向束模式的定量分析方法和校正算法,用于声学二极管传感器的敏感单元之间的不匹配
Lingmeng Yang1, Zhezheng Zhu1, Wangnan Chen1
1School of Integrated Circuits, Peking University, Beijing 100871, China.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
音响二度传感器 (ADS) 提供高定向性,但对单元不匹配非常敏感. 本研究提出了一个模型,分析和校正算法,以解决这些不匹配问题,改善声音本地化和噪声消除的ADS性能.
科学领域:
- 声学 声学 在声学上
- 传感器技术 传感器技术
- 信号处理 信号处理
背景情况:
- 音响二次传感器 (ADS) 具有很高的定向性,对于声源定位和噪声消除非常有价值.
- 由于它们的敏感单元之间的不匹配,ADS的性能显著下降.
- 现有的描述和纠正这些不匹配的方法是有限的.
研究的目的:
- 在ADS中开发混合不匹配的理论模型.
- 提出一种定量分析方法来估计不匹配的大小.
- 展示一种用于改善ADS定向性模式的校正算法.
主要方法:
- 建立了混合不匹配的理论模型,使用有限差异近似的单轴声粒子速度梯度.
- 通过比较基于MEMS的ADS的理论和实验方向性模式来验证模型.
- 开发并应用了导向束模式分析以量化不匹配.
- 使用模拟和测量数据实现并测试了一个校正算法.
主要成果:
- 理论模型准确地反映了ADS中的实际不匹配.
- 量化分析方法有效地估计了不匹配的大小.
- 校正算法成功地改进了模拟和测量的定向性光束模式.
结论:
- 开发的理论模型和定量分析为理解和减轻ADS中的不匹配提供了一个强大的框架.
- 演示的校正算法增强了ADS在苛刻的声学环境中的实际应用.
- 这项工作促进了各种声学应用的高性能ADS的设计和优化.
相关概念视频
Distance Corrections
52
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
52
Mesh Analysis for AC Circuits
398
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
398
Beams with Unsymmetric Loadings
144
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
144


