Array technology for acoustic wave field analysis in enclosures
作者:
A. J. Berkhout,
D. de Vries,
J. J. Sonke,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1997)
卷期:
Volume 102,
issue 5
页码: 2757-2770
ISSN:0001-4966
年代: 1997
DOI:10.1121/1.420330
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A method is proposed to calculate and measure impulse responses in an enclosure along closely spaced receiver arrays. Hence, instead of using a sparse distribution of receiver positions with single microphones, as is common practice now,arraysof microphones are applied to register the complex sound fields within enclosures. This way, there is a strong spatial correlation between adjacent responses, enabling one to analyze individual reflected wavefronts. It is shown that visualization of the recorded data in a two-dimensional domain, defined by detector position and travel time, gives a significantly improved insight in the structure of complex sound fields. This insight is further increased by applying the linear Radon transform (plane wave decomposition), yielding a representation of the data in the so-called ray parameter versus intercept time domain.
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