Title
Assessment of reflectivity of noise barriers in the far field – QUIESST method compared to traditional approach
Author
de Roo, F.
Publication year
2013
Abstract
The sound reflectivity of noise barriers elements is one of the major acoustic product characteristics. Traditionally this property was tested in reverberation rooms according to EN 1793-1 and the results were used to predict the effect of sound reflections in the far field. As in many cases these results cannot be used directly to assess the far field influence of reflections, two methods to modify the test results (truncation and correction for finite sample size) may be used for practical applications. More recently outdoor in-situ sound reflectivity tests were developed as an alternative for the laboratory tests (CEN/TS 1793-5). After the first development phase in the EU project Adrienne (1995 -1997) the in-situ test method for reflectivity was improved in the EU-FP7 project QUIESST (2009-2012). In this project the near field test was complemented with an engineering computation method to predict the far field effect of reflections. This combined assessment methodology is discussed in this paper and its results are presented and compared to the traditional approach.
Subject
Physics & Electronics
AS - Acoustics & Sonar
TS - Technical Sciences
Buildings and Infrastructure
Acoustics and Audiology
Built Environment
Noise barrier
Reflectivity
Far Field propagation model
Acoustic noise measurement
Sampling
Acoustic noise
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http://resolver.tudelft.nl/uuid:ffdde5ed-3309-4cdb-a575-af0235bcea6c
TNO identifier
479234
Publisher
Institute of Noise Control Engineering, Washington, D.C.
Source
42nd International Congress and Exposition on Noise Control Engineering - Noise Control for Quality of Life - INTER-NOISE 2013, 15-18 September 2013, Innsbruck, Austria, 2598-2607
Document type
conference paper