Additional noise reduction with diffracting elements on barriers: Experimental testing

Wout Schwanen, Mark Mertens, Ysbrand Wijnant, Willem Jan van Vliet

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)

Abstract

The noise reduction of a (low) noise barrier can be enhanced by using an additional element with quarter-wavelength resonators with varying depths. The so-called WHISwall or WHIStop deflects sound upwards for specific frequencies creating an additional sound reduction. Different experiments on the WHISwall and WHIStop are performed as input for model validation. The development and validation of the model are described in a separate paper. In this paper the measurement campaign and its results are presented. We performed measurements on two setups. The first setup consists of a 1.1m high WHISwall, a 1.1m high noise barrier and a reference section (without noise measure). Measurements have been conducted with both an artificial sound source and pass-by measurements with light and heavy motor vehicles. In a second test setup, the WHIStop was placed on top of a 4m high noise barrier, and the diffraction was determined according the European standard EN 1793-4.

Original languageEnglish
Title of host publicationProceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering
EditorsTyler Dare, Stuart Bolton, Patricia Davies, Yutong Xue, Gordon Ebbitt
PublisherThe Institute of Noise Control Engineering of the USA, Inc.
Pages2654-2664
Number of pages11
ISBN (Electronic)9781732598652
DOIs
Publication statusPublished - 2021
Event50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021 - Virtual Conference, Washington, United States
Duration: 1 Aug 20215 Aug 2021
Conference number: 50

Publication series

NameProceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering

Conference

Conference50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021
Abbreviated titleINTER-NOISE 2021
Country/TerritoryUnited States
CityWashington
Period1/08/215/08/21

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