Flexible Beampattern Design Algorithm for Spherical Microphone Arrays
Flexible Beampattern Design Algorithm for Spherical Microphone Arrays
复制标题
球形麦克风阵列的灵活波束方向图设计算法
DOI：
10.1109/access.2019.2943615
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Zhu J.
中科院分区：
文献类型：
--
作者：
Wang L.;Zhu J.
Specific beampatterns of spherical microphone arrays (SMAs) are designed for different noise scenarios. The standard beampattern usually achieves optimum value in one of the performance indicators. Additionally, in acoustics scenarios where positions of several noise sources are known, the beampattern for SMA should be designed to reject signals from noise orientations. This paper presents a flexible beamformer design method for SMA. The beampattern expression is transformed from spherical harmonics expansion to the common polynomial expression, which facilitates the implementation of the standard beampattern and the novel pattern where the zero positions are assigned to reject multiple noise sources. Simulation results reveal that the proposed beamformer shows better flexibility over the high directivity beamformer and Dolph-Chebychev beamformer. The deep-null problem existing in the open-sphere SMA is also discussed and can be mitigated by reducing the radius or increasing the order of the beamformer.
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DOI：
10.1186/s13636-018-0130-z
发表时间：
2018-07
期刊：
EURASIP Journal on Audio, Speech, and Music Processing
影响因子：
--
作者：
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通讯作者：
Simon Grimm;J. Freudenberger
DOI：
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发表时间：
2015-08
期刊：
The Journal of the Acoustical Society of America
影响因子：
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通讯作者：
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1979-10
期刊：
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影响因子：
--
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通讯作者：
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DOI：
10.1007/978-3-540-78612-2
发表时间：
2008-03
期刊：
--
影响因子：
--
作者：
J. Benesty;Jingdong Chen;Yiteng Huang
通讯作者：
J. Benesty;Jingdong Chen;Yiteng Huang
DOI：
10.1109/tsa.2004.839244
发表时间：
2005-01-01
期刊：
IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING
影响因子：
--
作者：
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通讯作者：
Rafaely, B