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BS EN 1793-6:2018 – TC:2020 Edition

BS EN 1793-6:2018 – TC:2020 Edition

$246.62

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

Published By Publication Date Number of Pages
BSI 2020 114
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This document describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for traffic noise reducing devices: the sound insulation index. The test method is intended for the following applications: – determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed along roads, to be measured either in situ or in laboratory conditions; – determination of the in situ intrinsic characteristics of airborne sound insulation 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); – interactive design process of new products, including the formulation of installation manuals. The test method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed in reverberant conditions, e.g. inside tunnels or deep trenches or under covers. Results are expressed as a function of frequency in one-third octave bands, where possible, between 100 Hz and 5 kHz. If it is not possible to get valid measurement results over the whole frequency range indicated, the results will be given in a restricted frequency range and the reasons for the restriction(s) will be clearly reported.

PDF Catalog

PDF Pages PDF Title
66 National foreword
69 European foreword
70 Introduction
72 1 Scope
2 Normative references
3 Terms and definitions
77 4 Sound insulation index measurements
4.1 General principle
4.2 Measured quantity
4.3 Test arrangement
83 4.4 Measuring equipment
4.4.1 Components of the measuring system
4.4.2 Sound source
4.4.3 Test signal
84 4.5 Data processing
4.5.1 Calibration
4.5.2 Sample rate
85 4.5.3 Background noise
4.5.4 Scanning technique using a single microphone
4.5.5 Scanning technique using nine microphones
86 4.5.6 Adrienne temporal window
87 4.5.7 Placement of the Adrienne temporal window
88 4.5.8 Low frequency limit and sample size
89 4.6 Positioning of the measuring equipment
4.6.1 Selection of the measurement positions
90 4.6.2 Post measurements
4.6.3 Additional measurements
4.6.4 Reflecting objects
4.6.5 Safety considerations
4.7 Sample surface and meteorological conditions
4.7.1 Condition of the sample surface
91 4.7.2 Wind
4.7.3 Air temperature
4.8 Single-number rating
4.8.1 General
4.8.2 Acoustic elements
92 4.8.3 Posts
4.8.4 Global
5 Measurement uncertainty
93 6 Measuring procedure
7 Test report
95 Annex A (informative) Categorization of single-number rating
96 Annex B (informative) Guidance note on use of the single-number rating
97 Annex C (informative) Measurement uncertainty
100 Annex D (informative) Template of test report on airborne sound insulation of road traffic noise reducing devices
111 Bibliography

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BS EN 1793-6:2018 - TC
$246.62