EN 1793-1:2012
(Main)Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
This European Standard specifies the laboratory method for measuring the sound absorption of flat noise barriers or flat cladding for retaining walls or tunnels. It covers the assessment of the intrinsic sound absorption performance of roadside noise reducing devices that can reasonably be assembled inside the testing facility described in EN ISO 354.
The test method in EN ISO 354 referred to in this European Standard is strictly valid only for plane absorbers; in particular, it excludes devices that act as weakly damped resonators. Some devices will depart significantly from these requirements and in these cases care is needed in interpreting the results.
NOTE The test method in EN ISO 354 is based on measurements in a reverberation room where diffuse sound field conditions prevail. As a uniformly applicable method for the determination of the sound absorptive performance of noise reducing devices under free field conditions is still under development, the measurement results according to this European Standard are temporarily considered relevant for application on noise reducing devices in reverberant as well as in free field conditions.
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der Schallabsorption
Diese Europäische Norm legt das Laborprüfverfahren zur Ermittlung der Schallabsorption von ebenen Lärmschutzwänden oder von ebenen Bekleidungen für Stützmauern oder Tunnel fest. Sie ist bei der Bewertung der produktspezifischen Schallabsorptionseigenschaften derjenigen Lärmschutzvorrichtungen an Straßen anzuwenden, die für den Einbau in die in EN ISO 354 beschriebene Prüfeinrichtung geeignet sind.
Das in EN ISO 354 festgelegte Prüfverfahren, worauf in dieser Norm Bezug genommen wird, gilt grundsätzlich nur für ebene Absorptionsverkleidungen. Insbesondere schließt es Lärmschutzvorrichtungen aus, die als schwach gedämpfte Resonatoren wirken. Einige Einrichtungen weichen beträchtlich von diesen Anforderungen ab. In solchen Fällen ist diese Gegebenheit bei der Interpretation der Ergebnisse sorgfältig zu beachten.
ANMERKUNG Das in EN ISO 354 beschriebene Prüfverfahren beruht auf Messungen im Hallraum mit vorwiegend diffusem Schallfeld. Da sich ein allgemein gültiges Prüfverfahren zur Bestimmung der Schallabsorptionseigenschaften von Lärmschutzvorrichtungen unter Freifeldbedingungen noch in der Entwicklung befindet, gelten die mit dieser Europäischen Norm erzielten Messergebnisse vorübergehend für Lärmschutzvorrichtungen sowohl in halliger Umgebung als auch unter Freifeldbedingungen.
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustique
La présente Norme européenne spécifie la méthode de laboratoire permettant de mesurer l'absorption acoustique des écrans antibruit plats ou des parements plats pour les murs de soutènement ou les tunnels. Elle traite de l'évaluation de la performance d'absorption acoustique intrinsèque des dispositifs de réduction du bruit en bordure de voies qui peuvent raisonnablement être assemblés à l'intérieur de l'installation d'essai décrite dans l'EN ISO 354.
La méthode d'essai décrite dans l'EN ISO 354, citée en référence dans la présente Norme Européenne, n'est strictement valide que pour les absorbeurs plans. Cela exclut en particulier les dispositifs qui agissent comme des résonateurs faiblement amortis. Certains dispositifs s'écartent nettement de ces exigences et, dans ce cas, l'interprétation des résultats doit être faite avec prudence.
NOTE La méthode d'essai décrite dans l'EN ISO 354 est fondée sur des mesurages réalisés dans une salle réverbérante où prévalent des conditions de champ acoustique diffus. Etant donné qu'une méthode uniformément applicable pour la détermination de la performance d'absorption acoustique des dispositifs de réduction du bruit dans des conditions de champ libre est en cours d'élaboration, les résultats de mesure obtenus conformément à la présente Norme européenne sont provisoirement jugés pertinents pour une application aux dispositifs de réduction du bruit aussi bien dans des conditions de champ réverbéré que de champ libre.
Protihrupne ovire za cestni promet - Preskusna metoda za ugotavljanje akustičnih lastnosti - 1. del: Karakteristike, značilne za absorpcijo zvoka
Ta evropski standard določa laboratorijsko metodo za merjenje absorpcije zvoka ploskih protihrupnih ovir ali ploskih oblog za oporne zidove ali predore. Zajema vrednotenje bistvenih akustičnih lastnosti protihrupnih ovir za cestni promet, ki jih je mogoče razumno zbrati v laboratoriju, opisanem v standardu EN ISO 354. Preskusna metoda iz standarda EN ISO 354, ki je navedena v tem evropskem standardu, velja le za ravne absorberje, zlasti pa ne velja za ovire, ki delujejo kot rahlo dušeni resonatorji. Pri ovirah, ki so precej neskladne s temi zahtevami, je pri razlagi rezultatov potrebna visoka stopnja previdnosti.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lärmschutzeinrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der SchallabsorptionDispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustiqueRoad traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption93.080.30Cestna oprema in pomožne napraveRoad equipment and installations17.140.30Emisija hrupa transportnih sredstevNoise emitted by means of transportICS:Ta slovenski standard je istoveten z:EN 1793-1:2012SIST EN 1793-1:2013en,fr,de01-februar-2013SIST EN 1793-1:2013SLOVENSKI
STANDARDSIST EN 1793-1:19991DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1793-1
November 2012 ICS 17.140.30; 93.080.30 Supersedes EN 1793-1:1997English Version
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
Dispositifs de réduction du bruit du trafic routier - Méthode d'essai pour la détermination de la performance acoustique - Partie 1: Caractéristiques intrinsèques de l'absorption acoustique
Lärmschutzvorrichtungen an Straßen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 1: Produktspezifische Merkmale der Schallabsorption This European Standard was approved by CEN on 29 September 2012.
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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1793-1:2012: ESIST EN 1793-1:2013
Categorisation of single-number rating . 9Annex B (informative)
Guidance note on use of the number rating DLαααα . 10Annex C (informative)
Measurement uncertainty . 11 SIST EN 1793-1:2013
tunnels and their approaches; traffic passing close to a barrier where reflections between the vehicles and the barrier may reduce effectiveness. This European Standard specifies a test method for qualifying the sound absorption performance of noise reducing devices designed for roads (a measure of intrinsic performance). It is not concerned with determining insertion loss (extrinsic performance) which depends on additional factors which are not related to the product itself, e.g. the dimensions of the barrier and quality of installation work and site factors such as ground impedance, site geometry etc. The test is designed to allow the intrinsic sound absorption performance of the device to be measured; the resulting rating should aid the selection of devices for particular roadside applications.
This method may be used to qualify noise reducing devices for other applications, e.g. found along railways or near industrial sites. In these cases, the single-number ratings should be calculated using an appropriate spectrum. In the previous version of this European Standard dated September 1997, the basic test method was derived from EN 20354:1985. In the current version of this European Standard, the basic test method is derived from EN ISO 354:2003. In the current version of the basic test method, an essential change was introduced compared to the previous version, viz. the application of a correction method for changes in sound attenuation in air caused by changes in air temperature and humidity during the test. Because this correction was not applied in the previous version of the test method, the results from the current version may deviate considerably from the results obtained with the previous version of the method. Specifically for test samples with a high absorption coefficient, these changes may amount to 1 dB or 2 dB for the single number rating DL., either in a positive or a negative sense. The effect of the application of the correction will be most noticeable in the higher frequency bands. To avoid possible confusion between the old and the new measurement results, the continued use
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