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Measured light vehicle noise reduction by hedges

van Renterghem, Timothy; Attenborough, Keith; Maennel, Manuel; Defrance, Jerome; Horoshenkov, Kirill; Kang, Jian; Bashir, Imran; Taherzadeh, Shahram; Altreuther, Beate; Khan, Amir; Smyrnova, Julia and Yang, Hong-Seok (2014). Measured light vehicle noise reduction by hedges. Applied Acoustics, 78 pp. 19–27.

DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.apacoust.2013.10.011
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Abstract

The acoustical effects of hedges result from a combination of physical noise reduction and their influences on perception. This study investigates the physical noise reduction so as to enable estimation of its relative importance. Different in-situ methods have been used to measure noise shielding by hedges. These include a statistical pass-by experiment where the real insertion loss of a hedge could be measured, three controlled pass-by experiments using a reference microphone at close distance, and transmission loss measurements using a point source. Thick dense hedges are found to provide a small total A-weighted road traffic noise reduction at low vehicle speeds. Measured insertion losses range from 1.1 dBA to 3.6 dBA. The higher noise reductions are found to be associated with an increased ground effect.

Item Type: Journal Item
Copyright Holders: 2103 Elsevier Ltd.
ISSN: 0003-682X
Project Funding Details:
Funded Project NameProject IDFunding Body
HOSANNA234406EC FP7
Keywords: road traffic noise; vegetation; outdoor sound propagation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 39614
Depositing User: Keith Attenborough
Date Deposited: 28 Feb 2014 10:12
Last Modified: 10 Nov 2016 17:17
URI: http://oro.open.ac.uk/id/eprint/39614
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