Criterion for the minimum source distance at which plane-wave beamforming can be applied
Criterion for the minimum source distance at which plane-wave beamforming can be applied
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可应用平面波波束形成的最小源距离标准
DOI：
10.1121/1.423289
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
J. G. Ryan
中科院分区：
文献类型：
--
作者：
J. G. Ryan
对于给定的传声器阵列尺寸和工作波长，推导出可用于确定近场范围的表达式。该表达式基于近场阵列响应的失真，并近似于平面波束形成引起的幅度响应误差为1分贝的距离。
An expression is derived which can be used to determine the extent of the near field for a given microphone array size and operating wavelength. This expression is based on the distortion of the near-field array response, and approximates the distance at which the magnitude response error due to plane-wave beamforming is 1 dB.