Criterion for the minimum source distance at which plane-wave beamforming can be applied
作者:
James G. Ryan,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1998)
卷期:
Volume 104,
issue 1
页码: 595-598
ISSN:0001-4966
年代: 1998
DOI:10.1121/1.423289
出版商: Acoustical Society of America
数据来源: AIP
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.
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