prEN 1793-5
(Main)Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under direct sound field conditions
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under direct sound field conditions
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 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 a restricted frequency range and the reasons of the restriction(s) shall be clearly reported.
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 5: Produktspezifische Merkmale - In-situ-Werte der Schallreflexion in gerichteten Schallfeldern
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 5: Caractéristiques intrinsèques - Valeurs in situ de réflexion acoustique dans des conditions de champ acoustique direct
Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih lastnosti - 5. del: Bistvene lastnosti - Terenske vrednosti odboja zvoka z uporabo usmerjenega zvočnega polja
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 1793-5:2023
01-november-2023
Nadomešča:
SIST EN 1793-5:2016/AC:2018
Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih
lastnosti - 5. del: Bistvene lastnosti - Terenske vrednosti odboja zvoka z uporabo
usmerjenega zvočnega polja
Road traffic noise reducing devices - Test method for determining the acoustic
performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under
direct sound field conditions
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen
Eigenschaften - Teil 5: Produktspezifische Merkmale - In-situ-Werte der Schallreflexion
in gerichteten Schallfeldern
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination
de la performance acoustique - Partie 5: Caractéristiques intrinsèques - Valeurs in situ
de réflexion acoustique dans des conditions de champ acoustique direct
Ta slovenski standard je istoveten z: prEN 1793-5
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 1793-5:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 1793-5:2023
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oSIST prEN 1793-5:2023
CEN/TC 226
Date: 2022-09-19
prEN 1793-5:2022
CEN/TC 226
Secretariat: AFNOR
Road traffic noise reducing devices — Test method for determining the acoustic
performance — Part 5: Intrinsic characteristics — Sound absorption under direct sound
field conditions
Lärmschutzeinrichtungen an Straßen — Prüfverfahren zur Bestimmung der akustischen
Eigenschaften — Teil 5: Produktspezifische Merkmale — Schallabsorption in gerichteten
Schallfeldern
Dispositifs de réduction du bruit du trafic routier — Méthode d’essai pour la détermination
de la performance acoustique — Partie 5 : Caractéristiques intrinsèques — Absorption
acoustique dans des conditions de champ acoustique direct
ICS: 17.140.30, 93.080.30
Descriptors:
Document type: European Standard
Document subtype:
Document stage: CEN Enquiry
Document language: E
C:\Users\massimo.garai\Documents\CEN TC226 WG6\EN 1793-5 2018-2022\EN 1793-5 2022-09-19\TG1
N619 prEN 1793-5 2022-09-19.docx STD Version 2.5a
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oSIST prEN 1793-5:2023
prEN 1793-5:2023 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Symbols and abbreviations . 13
5 Sound reflection index measurements . 15
5.1 General principle . 15
5.2 Measured quantity . 15
5.3 Test arrangement . 19
5.3.1 Tests on purposely built full -size samples . 19
5.3.2 Installed road traffic noise reducing devices . 20
5.3.3 Inclined or curve road traffic noise reducing devices . 21
5.4 Measuring equipment . 25
5.4.1 Components of the measuring system .
...
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