EN ISO 3743-2:2019

SLOVENSKI STANDARD
01-december-2019
Nadomešča:
SIST EN ISO 3743-2:2009
Akustika - Ugotavljanje ravni zvočnih moči virov hrupa z merjenjem zvočnega
tlaka - Inženirske metode za majhne premične vire v odmevnih poljih - 2. del:
Metode za posebne odmevnice (ISO 3743-2:2018)
Acoustics - Determination of sound power levels of noise sources using sound pressure -
Engineering methods for small, movable sources in reverberant fields - Part 2: Methods
for special reverberation test rooms (ISO 3743-2:2018)
Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus
Schalldruckmessungen - Verfahren der Genauigkeitsklasse 2 für kleine, transportable
Quellen in Hallfeldern - Teil 2: Verfahren für Sonder-Hallräume (ISO 3743-2:2018)
Acoustique - Détermination des niveaux de puissance acoustique émis par les sources
de bruit à partir de la pression acoustique - Méthodes d'expertise en champ réverbéré
applicables aux petites sources transportables - Partie 2: Méthodes en salle d'essai
réverbérante spéciale (ISO 3743-2:2018)
Ta slovenski standard je istoveten z: EN ISO 3743-2:2019
ICS:
17.140.01 Akustična merjenja in Acoustic measurements and
blaženje hrupa na splošno noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 3743-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 17.140.01 Supersedes EN ISO 3743-2:2009
English Version
Acoustics - Determination of sound power levels of noise
sources using sound pressure - Engineering methods for
small, movable sources in reverberant fields - Part 2:
Methods for special reverberation test rooms (ISO 3743-
2:2018)
Acoustique - Détermination des niveaux de puissance Akustik - Bestimmung der Schallleistungspegel von
acoustique émis par les sources de bruit à partir de la Geräuschquellen aus Schalldruckmessungen -
pression acoustique - Méthodes d'expertise en champ Verfahren der Genauigkeitsklasse 2 für kleine,
réverbéré applicables aux petites sources transportable Quellen in Hallfeldern - Teil 2: Verfahren
transportables - Partie 2: Méthodes en salle d'essai für Sonder-Hallräume (ISO 3743-2:2018)
réverbérante spéciale (ISO 3743-2:2018)
This European Standard was approved by CEN on 29 January 2018.

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, Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3743-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 4

European foreword
This document (EN ISO 3743-2:2019) has been prepared by Technical Committee ISO/TC 43
"Acoustics" in collaboration with Technical Committee CEN/TC 211 “Acoustics” 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 March 2020, and conflicting national standards shall
be withdrawn at the latest by March 2020.
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 ISO 3743-2:2009.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 3743-2:2018 has been approved by CEN as EN ISO 3743-2:2019 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request M/396
(Machinery) to provide one voluntary means of conforming to essential requirements of Directive
2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and
amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Directive 2006/42/EC
Essential Requirements of Clause(s)/sub-clause(s) of this EN Remarks/Notes
Directive
1.7.4.2 u) Clauses 5 to 13, Annexes A, E and F
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 3743-2
Second edition
2018-02
Acoustics — Determination of sound
power levels of noise sources using
sound pressure — Engineering
methods for small, movable sources in
reverberant fields —
Part 2:
Methods for special reverberation
test rooms
Acoustique — Détermination des niveaux de puissance acoustique
émis par les sources de bruit à partir de la pression acoustique —
Méthodes d'expertise en champ réverbéré applicables aux petites
sources transportables —
Partie 2: Méthodes en salle d'essai réverbérante spéciale
Reference number
ISO 3743-2:2018(E)
©
ISO 2018
ISO 3743-2:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 3743-2:2018(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Noise source . 2
6 Requirements for special reverberation test room . 2
6.1 General . 2
6.2 Volume of test room. 2
6.3 Reverberation time of test room. 3
6.4 Surface treatment . 3
6.5 Criterion for background noise. 3
6.6 Criteria for temperature and humidity . 4
6.7 Evaluation of suitability of test room . 4
7 Instrumentation . 5
7.1 General . 5
7.2 Microphone and its associated cable . 5
7.3 Amplifier and weighting network . 5
7.4 Octave-band filters . 6
7.5 Squaring and averaging circuits and indicating device . 6
7.6 Frequency response of the instrumentation system . 6
7.7 Calibration . 6
8 Installation and operation of source under test . 6
8.1 General . 6
8.2 Source location . 6
8.3 Source mounting . 7
8.4 Auxiliary equipment .
...