BS EN 1793-5:2016
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
08-14-2018
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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