对自传感阻抗控制方法的研究,用于可调节的低频声音吸收.
Shiqi Zhang1, Xiaochen Zhao1, Suyan Jing1
1College of Power and Energy Engineering, Harbin Engineering University, China 145 Nantong St., Nangang District, Harbin, Heilongjiang, People's Republic of China 150001.
The Journal of the Acoustical Society of America
|March 10, 2026
概括
这项研究引入了一种新的自传感声阻抗控制方法,用于宽带低频声音吸收. 它使用扬声器.
科学领域:
- 声学和材料科学 声学和材料科学
- 电子机械系统 电子机械系统
- 信号处理 信号处理
背景情况:
- 由于波长和尺寸的限制,传统的被动吸声器在低频性能方面遇到了困难.
- 现有的主动吸声方法通常需要外部传感器,增加复杂性和成本.
- 基于扬声器的吸声系统受到设计和控制算法限制的限制.
研究的目的:
- 建议和验证用于宽带低频声音吸收的自传感声阻控制方法.
- 为了证明使用扬声器的机电合用于传感和执行的可行性.
- 在没有外部传感器的情况下实现灵活有效的低频声吸收.
主要方法:
- 开发一种自传感控制系统,利用扬声器的机电合.
- 实施有限脉冲响应 (FIR) 过器作为控制算法.
- 建立一次性参数模型,根据FIR波器系数推导出相当的声阻.
- 使用阻抗管进行数值模拟和实验验证.
主要成果:
- 理论分析证实,FIR波器的特性可以修改隔膜的有效质量,减噪,并抑制声学反应.
- 数字模拟显示了可调节的声学性能.
- 实验结果显示,在150-300赫兹范围内,吸收系数高于0.6.
- 拟议的方法实现了无需外部传感器的宽带低频吸收.
结论:
- 自传感声阻控制方法有效地实现宽带低频声音吸收.
- 与传统的分流扬声器设计相比,FIR波器提供了更大的设计灵活性.
- 扬声器的集成传感和执行功能使得一个紧而高效的吸声系统.
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