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近场麦克风阵列定点波束形成优化方法
引用本文:张洪明,沙祥,潘汉怀.近场麦克风阵列定点波束形成优化方法[J].数字社区&智能家居,2009(36).
作者姓名:张洪明  沙祥  潘汉怀
作者单位:淮安信息职业技术学院;
摘    要:为了有效的抑制干扰和噪声,该文在近场定点波束形成算法的基础上,研究麦克风阵列输出距离图和方向图的优化,通过施加不同距离和方向的虚拟干扰,来压低距离图和方向图的旁瓣,干扰强度随给定位置旁瓣高度而自适应的调整,最终实现阵列对期望信号形成的波束图优化,计算机仿真结果证明了该方法的正确性和有效性。

关 键 词:近场  定点  波束形成  优化  

Optimization of Near-field Microphone Array Point Beamforming
ZHANG Hong-ming,SHA Xiang,PAN Han-huai.Optimization of Near-field Microphone Array Point Beamforming[J].Digital Community & Smart Home,2009(36).
Authors:ZHANG Hong-ming  SHA Xiang  PAN Han-huai
Affiliation:ZHANG Hong-ming,SHA Xiang,PAN Han-huai(Huaian College of Information Technology,Huaian 223300,China)
Abstract:To constrain the interference and noise effectively,based on point beamforming algorithm of near-field,this paper researches on distance and azimuth pattern optimization of near-field microphone array output,through imposed dummy interference to suppress sidelobe of distance and azimuth pattern,while the interference intensity changes adaptively along with sidelobe altitude of given location,and at last realize optimization of beam pattern.Computer simulation approves that the method is right and available.
Keywords:near field  point-constrained  eigenvector subspace  adaptive beamforming  
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