| 基于多通道系统的封闭空间低频噪声主动控制 |
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| 引用本文： | 章月新.基于多通道系统的封闭空间低频噪声主动控制[J].科学技术与工程,2018,18(35). |
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| 作者姓名： | 章月新 |
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| 作者单位： | 南京航空航天大学，自动化学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 在封闭空间中,相较于单通道主动噪声控制(active noise control,ANC)系统,多通道ANC系统可以更好地实现整体区域的降噪。针对所设计的三维空间,分别进行单通道及双通道实验;并基于实验的方式布放次级源及误差传感器。实验结果证明,对于低频窄带噪声,多通道系统降噪效果显著,算法开启后在所设计装置空间内达到11. 4 d B的降噪量;且噪声声压级相较于单通道系统分布更为均匀。
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| 关 键 词： | 主动噪声控制（ANC） 多通道 窄带 空间降噪 位置布放 |
| 收稿时间： | 2018/7/21 0:00:00 |
| 修稿时间： | 2018/9/24 0:00:00 |
Low Frequency Noise Reduction in Closed Spaces Based on Multi-channel ANC System |
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| zhangyuexin.Low Frequency Noise Reduction in Closed Spaces Based on Multi-channel ANC System[J].Science Technology and Engineering,2018,18(35). |
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| Authors: | zhangyuexin |
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| Institution: | College of Automation Engineering, Nanjing University of Aeronautics and Astronautics |
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| Abstract: | In an enclosed space, the multi-channel ANC system can better achieve overall area noise reduction compared to a single-channel active noise control (ANC) system. In this paper, single-channel and double-channel experiments are carried out for the designed three-dimensional space, and the secondary sources and error sensors are arranged based on the experimental method. The experimental results show that for low-frequency narrowband noise, the multi-channel system has a significant noise reduction effect. After the algorithm is turned on, the noise reduction of 11.4dB is achieved in the designed device space, and the noise sound pressure level is evenly distributed than that of the single-channel system. |
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| Keywords: | active noise control (ANC) multiple channels narrowband spatial noise reduction Position placement |
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