| 有源噪声控制在隔声罩中应用的初步实验研究 |
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| 引用本文： | 牛锋,李宁荣,邱小军.有源噪声控制在隔声罩中应用的初步实验研究[J].应用声学,2005,24(5):281-285. |
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| 作者姓名： | 牛锋 李宁荣 邱小军 |
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| 作者单位： | 近代声学国家重点实验室,南京大学声学研究所,南京,210093 |
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| 基金项目： | 国家自然科学基金资助项目10304008,高等学校博士学科点专项科研基金资助课题,教育部留学回国人员科研启动基金资助项目 |
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| 摘 要： | 本文以对液压泵降噪为例,对有源噪声控制系统在隔声罩中的应用进行了初步的实验研究。噪声的低频段由有源噪声控制系统降低,中高频段由隔声罩降低,从而发挥了有源噪声控制和隔声罩各自的优点。附加了有源系统后的隔声罩使液压泵的噪声从112.4dB降到了80.0dB,整个系统的降噪量达到了32dB。其中有源噪声控制系统采用了6个次级控制源,在600Hz以下频段新增13dB的插入损失。
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| 关 键 词： | 隔声罩 有源噪声控制 插入损失 |
| 收稿时间： | 06 2 2004 12:00AM |
| 修稿时间： | 2004-06-022005-04-04 |
A preliminary experimental study on applying ANC in a sound insulating enclosure |
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| NIU Feng,LI Ning-Rong and QIU Xiao-Jun.A preliminary experimental study on applying ANC in a sound insulating enclosure[J].Applied Acoustics,2005,24(5):281-285. |
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| Authors: | NIU Feng LI Ning-Rong and QIU Xiao-Jun |
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| Institution: | State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093;State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093;State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093 |
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| Abstract: | This paper presents preliminary experimental results of applying ANC in a traditional sound insulating enclosure design. The ANC system is used to reduce the low frequency components while the enclosure is used to reduce the high frequency components. This method takes the advantages of both ANC and the enclosure. The enclosure together with the ANC system reduces the noise from 112dB to 80dB, with a noise reduction of 32dB. The ANC system uses 6 secondly control sources and gains an additional 13dB of insertion loss below 600Hz. |
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| Keywords: | Enclosure ANC Insertion loss |
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