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BS EN 1793-5:2016

Current

Current

The latest, up-to-date edition.

Road traffic noise reducing devices. Test method for determining the acoustic performance Intrinsic characteristics. In situ values of sound reflection under direct sound field conditions

Published date

08-14-2018

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European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Sound reflection index measurements
Annex A (informative) - Measurement uncertainty
Annex B (informative) - Template of test report on sound
        reflection of road noise barriers
Annex C (informative) - Near field to far field relationship
Bibliography

Gives a test method for measuring a quantity representative of the intrinsic characteristics of sound reflection from road noise reducing devices: the reflection index.

Committee
B/509/6
DevelopmentNote
Supersedes BS CEN/TS 1793-5 & 14/30296484 DC. (04/2016)
DocumentType
Standard
PublisherName
British Standards Institution
Status
Current
Supersedes

This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of sound reflection from road noise reducing devices: the reflection index.

The test method is intended for the following applications:

  • determination of the intrinsic characteristics of sound reflection of noise reducing devices to be installed along roads, to be measured either on typical installations alongside roads or on a relevant sample section;

  • determination of the in situ intrinsic characteristics of sound reflection of noise reducing devices in actual use;

  • comparison of design specifications with actual performance data after the completion of the construction work;

  • verification of the long term performance of noise reducing devices (with a repeated application of the method).

The test method is not intended for the following applications:

  • determination of the intrinsic characteristics of sound reflection of noise reducing devices to be installed in reverberant conditions, e.g. inside tunnels or deep trenches.

Results are expressed as a function of frequency, in one-third octave bands between 100Hz and 5kHz. If it is not possible to get valid measurements results over the whole frequency range indicated, the results should be given in a restricted frequency range and the reasons of the restriction(s) should be clearly reported.

Standards Relationship
EN 1793-5:2016 Identical
EN 1793-5:2016/AC:2018 Identical

EN 1793-3:1997 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum
IEC 60942:2003 Electroacoustics - Sound calibrators
EN 1793-4:2015 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction
EN 61672-1:2013 Electroacoustics - Sound level meters - Part 1: Specifications
EN 1793-6:2012 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - In situ values of airborne sound insulation under direct sound field conditions
IEC 61620:1998 Insulating liquids - Determination of the dielectric dissipation factor by measurement of the conductance and capacitance - Test method
EN 1793-1:2017 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption under diffuse sound field conditions
EN 60942:2003 Electroacoustics - Sound calibrators
EN 61260:1995/A1:2001 ELECTROACOUSTICS - OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS
EN 14389-1:2015 Road traffic noise reducing devices - Procedures for assessing long term performance - Part 1: Acoustical characteristics
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
EN 1793-2:2012 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions

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