Criterion for the minimum source distance at which plane-wave beamforming can be applied

被引:16
|
作者
Ryan, JG [1 ]
机构
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
来源
关键词
D O I
10.1121/1.423289
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
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.
引用
收藏
页码:595 / 598
页数:4
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