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空间有源消声中的次级源阵列的研究
引用本文:韩飞,沙家正.空间有源消声中的次级源阵列的研究[J].南京大学学报(自然科学版),1996,32(3):433-439.
作者姓名:韩飞  沙家正
作者单位:南京大学声学所,近代声学国家重点实验室
摘    要:采用次级源阵列实现空间有源消声,次级源阵列由单极子源组成,理论分析了要达到消声目的阵列中每个次级源的辐射强度所比须满足的条件,并分析了陈列中次级源单元之间的距离,噪声源与阵列之间的距离以及阵列中次级8源的数目对消声效果的影响。

关 键 词:有源消声  次级源阵列  噪声源  最优值

RESEARCH ON SECONDARY SOURCE ARRAY IN ACTIVE NOISE ATTENUATION IN SPACE
Han Fei, Sha Jiazheng.RESEARCH ON SECONDARY SOURCE ARRAY IN ACTIVE NOISE ATTENUATION IN SPACE[J].Journal of Nanjing University: Nat Sci Ed,1996,32(3):433-439.
Authors:Han Fei  Sha Jiazheng
Abstract:In this paper, a secondary source array made up of monopole sources is used to cancel the noise in a given region.The optimum radiating intensity of each unit of the secondary source array, which is essential to the aim of of active noise attenuation in the given region, is shown by theoretical analysis.The influence of the space between secondary units. distance between noise source and secondary source array as well as thenumber of units in the secondary array is also discussed and illustrated in graphs. The numerical results showthat much of the sound in the given region is reduced , and outside the region there is still a great noise reduction.
Keywords:Active Noise Cancel  Secondary Source Array  Noise Source  Optimum Value
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