SIST EN 16272-3-1:2023

Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse sound field applications

This document specifies a normalized railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on board devices are outside of the scope of this document.

Bahnanwendungen - Oberbau - Lärmschutzwände und verwandte Vorrichtungen zur Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 3-1: Produktspezifische Merkmale - Standardisiertes Schienenverkehrslärmspektrum und Einzahl-Angaben für Anwendungen im diffusen Schallfeld

Dieses Dokument legt ein standardisiertes Schienenverkehrslärmspektrum zur Ermittlung und Bewertung der akustischen Eigenschaften von Vorrichtungen zur Minderung des Luftschalls von Eisenbahnen an Bahnstrecken fest.
Alle Lärmminderungsvorrichtungen, die nicht zu Lärmschutzwänden und verwandten Vorrichtungen gegen Schallübertragung gehören, z. B. Vorrichtungen zur Verminderung von Erdbodenerschütterungen oder mittransportierte Vorrichtungen, gehören nicht zum Anwendungsbereich dieses Dokuments.

Applications ferroviaires - Infrastructure - Dispositifs de réduction du bruit - Méthode d'essai pour la détermination des performances acoustiques - Partie 3-1 : Spectre de bruit ferroviaire normalisé et indices uniques d'évaluation pour des applications en champ sonore diffus

Le présent document définit un spectre de bruit ferroviaire normalisé pour l'évaluation et la détermination des performances acoustiques de dispositifs conçus pour réduire le bruit ferroviaire aérien à proximité des voies ferrées.
Tous les dispositifs de réduction du bruit, autres que les écrans antibruit et autres dispositifs associés agissant sur la propagation des bruits aériens, par exemple les dispositifs d'atténuation des vibrations transmises par le sol et les dispositifs embarqués, ne relèvent pas du domaine d'application du présent document.

Železniške naprave - Infrastruktura - Protihrupne ovire in pripadajoče naprave, ki vplivajo na širjenje zvoka v zraku - Preskusna metoda za ugotavljanje akustičnih lastnosti - 3-1. del: Normalizirani spekter železniškega hrupa in enomestne številske stopnje razpršenega zvočnega polja

Ta evropski standard določa normalizirani spekter železniškega hrupa za vrednotenje in oceno akustičnih lastnosti naprav, namenjenih zmanjševanju železniškega hrupa po zraku v bližini železniških prog.
Vse protihrupne naprave, ki ne spadajo med protihrupne ovire in pripadajoče naprave, ki vplivajo na širjenje zvoka po zraku, npr. naprave za zmanjšanje talnih vibracij in naprave v vozilih, niso zajete v tem evropskem standardu.

General Information

• Status: Published
• Public Enquiry End Date: 30-Apr-2022
• Publication Date: 05-Nov-2023
• ICS: 17.140.30 - Noise emitted by means of transport
• ICS: 93.100 - Construction of railways
• Technical Committee: IŽNP - Reilway applications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 26-Oct-2023
• Due Date: 31-Dec-2023
• Completion Date: 06-Nov-2023
• Directive: 2022-01-0641 - Pravilnik o spodnjem ustroju železniških prog
• Ref Project: EN 16272-3-1:2023 - Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse sound field applications

Relations

• Revised: SIST EN 16272-3-1:2014 - Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse field applications
• Effective Date: 25-May-2022
• Revised: SIST EN 16272-3-2:2014 - Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-2: Normalized railway noise spectrum and single number ratings for direct field applications
• Effective Date: 22-Jul-2020

Overview

EN 16272-3-1:2023 (CEN) specifies a normalized railway noise spectrum and procedures for deriving single-number ratings used to evaluate the acoustic performance of noise barriers and related devices acting on airborne sound propagation in diffuse sound field laboratory conditions. The standard defines the reference spectrum (100 Hz–5 kHz) and the method for calculating the single-number ratings for sound absorption (DLα,NRD) and airborne sound insulation (DLR). It applies only to airborne noise mitigation devices positioned near railways; ground-borne vibration treatments and onboard systems are excluded.

Key topics and requirements

• Normalized railway noise spectrum: A reference set of relative A‑weighted one‑third octave band levels (100 Hz to 5 kHz) is provided for weighting laboratory measurements when assessing product performance in reverberant/diffuse conditions.
• Single-number ratings:
  • DLα,NRD - single-number rating of sound absorption in diffuse sound field, calculated by weighting measured absorption coefficients (from EN 16272‑1) with the normalized spectrum.
  • DLR - single-number rating of airborne sound reduction (insulation) in diffuse sound field, calculated by weighting measured reduction index values (from EN 16272‑2) with the same spectrum.
• Calculation constraints: The standard provides the exact mathematical expressions and limits (e.g., bounding ratios to avoid non-physical results).
• Uncertainty and reproducibility: Annex C and clauses outline the need to declare measurement uncertainty, with guidance using reproducibility data where analytical uncertainty budgets are not available.
• Scope and exclusions: Applies only to noise barriers and related airborne sound devices near railways under diffuse field test conditions.

Practical applications and who uses it

• Manufacturers of noise barriers and acoustic panels - to provide standardized performance data (DLα,NRD / DLR) for product datasheets and competitive comparison.
• Test laboratories and acoustical consultants - to perform compliant laboratory testing and report single-number ratings with stated uncertainty.
• Railway infrastructure designers, planners and procurement teams - to specify performance requirements for noise mitigation in tunnels, trenches and other reverberant environments.
• Regulators and certification bodies - to harmonize evaluation criteria for compliance and selection of noise control solutions.

Related standards

• EN 16272‑1 (sound absorption, diffuse field)
• EN 16272‑2 (airborne sound insulation, diffuse field)
• EN 16272‑3‑2 (direct sound field)
• EN 16272‑4, ‑5, ‑6 and CEN/TS 16272‑7 (other intrinsic/extrinsic characteristics and in situ tests)

Keywords: EN 16272-3-1:2023, railway noise, noise barriers, normalized railway noise spectrum, single-number rating, diffuse sound field, sound absorption, airborne sound insulation.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Železniške naprave - Infrastruktura - Protihrupne ovire in pripadajoče naprave, ki
vplivajo na širjenje zvoka v zraku - Preskusna metoda za ugotavljanje akustičnih
lastnosti - 3-1. del: Normalizirani spekter železniškega hrupa in enomestne
številske stopnje razpršenega zvočnega polja
Railway applications - Infrastructure - Noise barriers and related devices acting on
airborne sound propagation - Test method for determining the acoustic performance -
Part 3-1: Normalized railway noise spectrum and single number ratings for diffuse sound
field applications
Bahnanwendungen - Oberbau - Lärmschutzwände und verwandte Vorrichtungen zur
Beeinflussung der Luftschallausbreitung - Prüfverfahren zur Bestimmung der
akustischen Eigenschaften - Teil 3-1: Produktspezifische Merkmale - Standardisiertes
Schienenverkehrslärmspektrum und Einzahl-Angaben für Anwendungen im diffusen
Schallfeld
Applications ferroviaires - Infrastructure - Dispositifs de réduction du bruit - Méthode
d'essai pour la détermination des performances acoustiques - Partie 3-1 : Spectre de
bruit ferroviaire normalisé et indices uniques d'évaluation pour des applications en
champ sonore diffus
Ta slovenski standard je istoveten z: EN 16272-3-1:2023
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16272-3-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2023
EUROPÄISCHE NORM
ICS 93.100 Supersedes EN 16272-3-1:2012
English Version
Railway applications - Infrastructure - Noise barriers and
related devices acting on airborne sound propagation -
Test method for determining the acoustic performance -
Part 3-1: Normalized railway noise spectrum and single
number ratings for diffuse sound field applications
Applications ferroviaires - Infrastructure - Dispositifs Bahnanwendungen - Oberbau - Lärmschutzwände und
de réduction du bruit - Méthode d'essai pour la verwandte Vorrichtungen zur Beeinflussung der
détermination de la performance acoustique - Partie 3- Luftschallausbreitung - Prüfverfahren zur Bestimmung
1 : Spectre de bruit ferroviaire normalisé et indices der akustischen Eigenschaften - Teil 3-1:
uniques d'évaluation pour des applications en champ Produktspezifische Merkmale - Standardisiertes
sonore diffus Schienenverkehrslärmspektrum und Einzahl-Angaben
für Anwendungen im diffusen Schallfeld
This European Standard was approved by CEN on 4 September 2023.

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, 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.
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. EN 16272-3-1:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Symbols and abbreviated terms . 6
4 Normalized railway noise spectrum for diffuse sound field applications . 7
5 Single-number rating of sound absorption DL . 8
α,NRD
6 Single-number rating of sound reduction index DLR . 8
7 Uncertainty of single-number ratings . 8
8 Expression of results . 9
Annex A (informative) Guidance note on use of the single-number rating of sound absorption
DL . 10
α,NRD
Annex B (informative) Guidance note on use of the single-number rating of sound reduction
index DL . 11
R
Annex C (informative) Measurement uncertainty of the single-number ratings . 12
C.1 General. 12
C.2 Measurement uncertainty based upon reproducibility data for DL . 12
α,NRD
C.3 Measurement uncertainty based upon reproducibility data for DLR . 12
Bibliography . 14

European foreword
This document (EN 16272-3-1:2023) has been prepared by Technical Committee CEN/TC 256 “Railway
application”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2024, and conflicting national standards shall be
withdrawn at the latest by April 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16272-3-1:2012.
The main changes compared to the previous edition are listed below:
— ISO/IEC Guide 98-3, ISO 12999-1 and ISO 12999-2 have been added to the References;
— The ‘Terms, definitions, symbols and abbreviations’ clause has been updated;
— In EN 16272-1, the method for determining sound absorption coefficients in each one-third octave
band, as described in EN ISO 354, has been modified: the Sabine absorption coefficient α has been
S
replaced by a new absorption coefficient α that is specific to noise barriers and related devices
NRD
acting on airborne sound propagation and which takes account of the volume of the test sample (the
new coefficient α might be derived from α );
NRD S
— Consequently, in this document the new absorption coefficient α is used to calculate the single-
NRD
number rating of sound absorption DLα ;
NRD
— An annex with the values of the standard deviation of reproducibility and repeatability of single-
number ratings has been added; this makes possible the declaration of the measurement uncertainty
and the related confidence level, which is now mandatory (Annex C);
— The Bibliography has been added.
EN 16272-3-1 is part of a series and is intended to be read in conjunction with the other parts. All parts
are listed in the following:
— EN 16272-1, Railway applications — Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 1:
Intrinsic characteristics — Sound absorption under diffuse sound field conditions
— EN 16272-2, Railway applications — Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 2:
Intrinsic characteristics — Airborne sound insulation under diffuse sound field conditions
— EN 16272-3-1, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 3-1:
Normalized railway noise spectrum and single number ratings for diffuse sound field applications (the
present document)
— EN 16272-3-2, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 3-2:
Normalized railway noise spectrum and single number ratings for direct sound field applications
— EN 16272-4, Railway applications – Track — Noise barriers and related devices acting on airborne
sound propagation — Test method for determining the acoustic performance — Part 4: Intrinsic
characteristics — In situ values of sound diffraction under direct sound field conditions
— EN 16272-5, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 5:
Intrinsic characteristics —Sound absorption under direct sound field conditions
— EN 16272-6, Railway applications – Infrastructure — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 6:
Intrinsic characteristics — Airborne sound insulation under direct sound field conditions
— CEN/TS 16272-7, Railway applications – Track — Noise barriers and related devices acting on
airborne sound propagation — Test method for determining the acoustic performance — Part 7:
Extrinsic characteristics — In situ values of insertion loss
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United
Kingdom.
Introduction
This document is read in conjunction with EN 16272-1 and EN 16272-2 and is applied only to situations
as described in those documents (diffuse sound field).
As the two main intrinsic acoustic characteristics of noise barriers and related devices acting on airborne
sound propagation in a diffuse sound field, sound absorption and airborne sound insulation, are
frequency dependent, there is a need to define a reference railway noise spectrum for test purposes. This
document defines the basic properties of railway noise measured at the rail track side in terms of a
characteristic normalized railway noise spectrum, which is needed to evaluate single-number ratings of
noise barriers and related devices acting on airborne sound propagation in reverberant conditions, e.g.
inside tunnels or deep trenches.
1 Scope
This document specifies a normalized railway noise spectrum for the evaluation and assessment of the
acoustic performance of devices designed to reduce airborne railway noise near railways.
All noise reducing devices different from noise barriers and related devices acting on airborne sound
propagation, e.g. devices for attenuation of ground borne vibration and on board devices are outside of
the scope of this document.
2 Normative references
Th
...