Concentric artificial impedance surface for directional sound beamforming
نویسندگان
چکیده
منابع مشابه
Sound absorption and acoustic surface impedance
The normal sound absorption coefficients of two different test objects in an impedance tube are measured with two different methods: The standing wave ratio method (ISO 10534-1:1996) and the transfer function method (ISO 10534-2:1998). From the latter is the specific acoustic impedance ratio calculated. The test objects are two cellular plastics: AC 30 S and FIRE 30 VF (both are 30 mm thick), t...
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1 JunTech Inc., 2314 E. Stratford Ct, Shorewood, WI 53211, USA 2Computer Science and Electrical Engineering Department, University of Maryland, Baltimore County, Baltimore, MD 21250, USA 3Electrical Engineering and Computer Science Department, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA 4Department of Electrical Engineering and Computer Science, Northwestern University, Evanston...
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2017
ISSN: 2158-3226
DOI: 10.1063/1.4979179