prEN 1793-4

Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction

This European Standard describes a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices. The test method prescribes measurements of the sound pressure level at several reference points near the top edge of a noise reducing device with and without the added device installed on its top. The effectiveness of the added device is calculated as the difference between the measured values with and without the added devices, correcting for any change in height (the method described gives the acoustic benefit over a simple barrier of the same height; however, in practice the added device can raise the height and this could provide additional screening depending on the source and receiver positions).
The test method is intended for the following applications:
•   preliminary qualification, outdoors or indoors, of added devices to be installed on noise reducing devices;
•   determination of sound diffraction index difference of added 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 added devices (with a repeated application of the method);
•   interactive design process of new products, including the formulation of installation manuals.
The test method can be applied both in situ and on samples purposely built to be tested using the method described here.
Results are expressed as a function of frequency, in one-third octave bands between 100 Hz and 5 kHz. If it is not possible to get valid measurements results over the whole frequency range indicated, the results shall be given in the restricted frequency range and the reasons of the restriction(s) shall be clearly reported. A single-number rating is calculated from frequency data.
For indoors measurements see Annex A.

Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 4: Produktspezifische Merkmale - In-situ-Werte der Schallbeugung

Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 4 : caractéristiques intrinsèques - Valeurs in-situ de la diffraction acoustique

Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih lastnosti - 4. del: Bistvene lastnosti - Terenske vrednosti difrakcije zvoka

General Information

• Status: Not Published
• Publication Date: 02-Jan-2024
• ICS: 17.140.30 - Noise emitted by means of transport
• ICS: 93.080.30 - Road equipment and installations
• Technical Committee: CEN/TC 226 - Road equipment
• Drafting Committee: CEN/TC 226/WG 6 - Noise reducing devices
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 16-Nov-2023
• Due Date: 15-Dec-2021
• Completion Date: 16-Nov-2023
• Ref Project: oSIST prEN 1793-4:2023 - Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction

Relations

• Revises: 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
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 1793-4:2023
01-november-2023
Nadomešča:
SIST EN 1793-4:2015
Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih
lastnosti - 4. del: Bistvene lastnosti - Terenske vrednosti difrakcije zvoka
Road traffic noise reducing devices - Test method for determining the acoustic
performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen
Eigenschaften - Teil 4: Produktspezifische Merkmale - In-situ-Werte der Schallbeugung
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination
de la performance acoustique - Partie 4 : caractéristiques intrinsèques - Valeurs in-situ
de la diffraction acoustique
Ta slovenski standard je istoveten z: prEN 1793-4
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
oSIST prEN 1793-4:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1793-4:2023

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oSIST prEN 1793-4:2023


DRAFT
EUROPEAN STANDARD
prEN 1793-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

August 2023
ICS 17.140.30; 93.080.30 Will supersede EN 1793-4:2015
English Version

Road traffic noise reducing devices - Test method for
determining the acoustic performance - Part 4: Intrinsic
characteristics - In situ values of sound diffraction
Dispositifs de réduction du bruit du trafic routier - Lärmschutzvorrichtungen an Straßen - Prüfverfahren
Méthode d'essai pour la détermination de la zur Bestimmung der akustischen Eigenschaften - Teil
performance acoustique - Partie 4 : caractéristiques 4: Produktspezifische Merkmale - In-situ-Werte der
intrinsèques - Valeurs in-situ de la diffraction Schallbeugung
acoustique
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 226.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1793-4:2023 E
worldwide for CEN national Members.

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oSIST prEN 1793-4:2023
prEN 1793-4:2023 (E)
Contents Page
European foreword .4
Introduction.5
1 Scope .6
2 Normative references .6
3 Terms and definitions.7
4 Symbols and abbreviations .
...