在环境噪音污染控制中应用改进的球形全向扬声器阵列模型
Yinsheng Li1, Wenping Li2, Maixia Fu3
1Key Laboratory of Grain Information Processing and Control, College of Information Science and Engineering, Ministry of Education, Henan University of Technology, Zhengzhou, 450001, China. lyswp009@126.com.
Scientific reports
|July 9, 2025
概括
这项研究引入了一种新的空间噪声控制系统,使用用于移动目标的球形扬声器阵列. 该系统动态跟踪目标,即使目标在移动时,也实现了显著的噪音降低.
科学领域:
- 声学 声学 在声学方面
- 信号处理 信号处理
- 环境工程 环境工程
背景情况:
- 环境噪音污染控制具有挑战性,特别是对于移动目标,由于传统固定系统的局限性.
- 现有的降噪方法难以应对动态环境和有限的覆盖范围.
- 需要适应性和移动性噪音控制解决方案.
研究的目的:
- 提出一种创新的方法,用于空间目标跟踪和噪声控制,使用球形全向扬声器阵列.
- 开发一种能够为移动目标动态降噪的系统.
- 在动态环境中实现全空间覆盖,以减少噪音.
主要方法:
- 构建用于声波传播的球形全向扬声器阵列的精确模型.
- 开发一个空间度和经度映射模型,用于实时目标感知.
- 采用自适应式扬声器节点选择和在线二次路径建模与辅助噪声,以创建一个安静的区域.
- 实施与目标一起移动的动态降噪控制系统.
主要成果:
- 该系统成功地实现了动态跟踪和缓慢移动的目标的视觉管理.
- 在缓慢的目标移动 (300-700 Hz) 期间,由于系统更新延迟,噪声降低约为7.6dB.
- 当目标处于静止状态时,安静区内的平均降噪达到17.8dB.
结论:
- 拟议的系统为移动目标的动态噪声控制提供了一个可行的解决方案.
- 该系统在创建适应性安静区域以减少噪音方面表现出有效性.
- 过系数更新的进一步改进可以提高目标移动期间的噪声降低.
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