Directional Circular Arrays of Point Sources
作者:
Walter Welkowitz,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1956)
卷期:
Volume 28,
issue 3
页码: 362-366
ISSN:0001-4966
年代: 1956
DOI:10.1121/1.1908330
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The Fourier series solution for the radiation field of a circular pressure ring is applied to the synthesis of a sound field expressed in the form of a Tchebyscheff polynomial. This leads to an exact solution in closed form for the amplitude and phase of excitation of point source elements on a circle when the main lobe width of the radiation pattern, the side lobe suppression, and the array circle diameter are specified. Calculations are carried out for two sample beam patterns to show the effects of different choices of array circle diameter and number of point source elements.
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