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：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1998年 / 104卷 / 01期
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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