期刊
APPLIED ACOUSTICS
卷 145, 期 -, 页码 89-97出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2018.09.020
关键词
Urban noise; Living Green Wall (LGW); Living plants; Green wall; Acoustic absorption; Acoustic measurement; Parametric sound
类别
This work reports on a new method to measure the absorption coefficient of a Living Green Wall (LGW) in situ. A highly directional parametric transducer and acoustic intensity probe are used to make this method robust against background noise and unwanted reflections. This method is tested under controlled laboratory conditions and in situ on a real green wall. The methods is compared favourably against impedance tube data obtained for porous media which properties are relatively easy to measure using a standard laboratory setup. The new method is an alternative to the ISO354-2003 and CEN/TS 1793-5:2016 standard methods to measure acoustic absorption of materials. Crown Copyright (C) 2018 Published by Elsevier Ltd. All rights reserved.
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