EN ISO 3743-1:2010

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010)

ISO 3743-1:2010 specifies methods for determining the sound power level or sound energy level of a noise source by comparing measured sound pressure levels emitted by this source (machinery or equipment) mounted in a hard-walled test room, the characteristics of which are specified, with those from a calibrated reference sound source. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands of width one octave, is calculated using those measurements. The sound power level or sound energy level with frequency A-weighting applied is calculated using the octave-band levels.
The method specified in ISO 3743-1:2010 is suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001.
The noise source under test may be a device, machine, component or sub-assembly. The maximum size of the source depends upon the size of the room used for the acoustical measurements (see 4.2).
The test environment that is applicable for measurements made in accordance with ISO 3743-1:2010 is a hard-walled test room with prescribed acoustical characteristics.
Information is given on the uncertainty of the sound power levels and sound energy levels determined in accordance with ISO 3743-1:2010, for measurements made in frequency octave bands and for A-weighted frequency calculations performed on them. The uncertainty conforms to ISO 12001:1996, accuracy grade 2 (engineering grade).

Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geräuschquellen aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 2 für kleine, transportable Quellen in Hallfeldern - Teil 1: Vergleichsverfahren in einem Prüfraum mit schallharten Wänden (ISO 3743-1:2010)

1.1   Allgemeines
Dieser Teil von ISO 3743 legt Verfahren für die Bestimmung des Schallleistungs- oder Schallenergiepegels einer Geräuschquelle fest, wobei die von dieser Geräuschquelle (Maschine oder Gerät) abgestrahlten Schalldruckpegel bei Aufstellung in einem Prüfraum mit schallharten Wänden und festgelegten Eigenschaften mit denen von einer kalibrierten Vergleichsschallquelle verglichen werden. Der von der Geräuschquelle erzeugte Schallleistungspegel (oder der Schallenergiepegel bei Impulsen oder anderen Geräuschen kurzer Dauer) in Oktavbändern wird aus diesen Messungen berechnet. Der A bewertete Schallleistungs- oder Schallenergiepegel wird aus den Oktavbandpegeln berechnet.
1.2   Art der Geräusche und der Geräuschquellen
Das in diesem Teil von ISO 3743 festgelegte Verfahren ist für alle in ISO 12001 definierten Arten von Geräuschen geeignet (gleichförmige, ungleichförmige, schwankende, Einzel-Schallimpulse usw.).
Die zu untersuchende Geräuschquelle kann ein Gerät, eine Maschine, Komponente oder Baugruppe sein. Die maximale Größe der Geräuschquelle hängt von der Größe des für die akustischen Messungen verwendeten Raums ab (siehe 4.2).
1.3   Messumgebung
Die für Messungen nach diesem Teil von ISO 3743 verwendbare Messumgebung ist ein Prüfraum mit schallharten Wänden und vorgeschriebenen akustischen Eigenschaften.
1.4   Messunsicherheit
Es werden Angaben zur Unsicherheit der nach diesem Teil von ISO 3743 bestimmten Schallleistungs- und Schallenergiepegel bereitgestellt, und zwar für Messungen in Oktavbändern und für Berechnungen von A bewerteten Ergebnissen aus diesen Messungen. Die Unsicherheit entspricht der Genauigkeitsklasse 2 nach ISO 12001:1996.

Acoustique - Détermination des niveaux de puissance acoustique et des niveaux d'énergie 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 1: Méthode par comparaison en salle d'essai à parois dures (ISO 3743-1:2010)

Akustika - Ugotavljanje ravni zvočnih moči in ravni zvočne energije virov hrupa z zvočnim tlakom - Inženirske metode za majhne premične vire v odmevnih poljih - 1. del: Primerjalna metoda za preskušanje v prostoru z zvočno refleksijskimi (odbojnimi) stenami (ISO 3743-1:2010)

Ta del ISO 3743 določa metode ugotavljanja ravni zvočne moči ali ravni zvočne energije vira hrupa s primerjavo izmerjenih ravni zvočnih tlakov, ki jih oddaja ta vir (stroji ali oprema), nameščen v prostoru z zvočno refleksijskimi (odbojnimi) stenami, katerega značilnosti so določene z tistimi iz kalibriranega referenčnega vira zvoka. Raven moči zvoka (ali v primeru prodorov hrupa ali prehodnimi emisijami hrupa raven zvočne energije), ki jo proizvede vir hrupa v frekvenčnih pasovih širine ene oktave, je izračunana z uporabo teh merjenj. Raven moči zvoka ali raven energije zvoka, pri kateri je uporabljeno A-uteženja, se izračuna z uporabo ravni oktavnega pasu.

General Information

• Status: Published
• Publication Date: 30-Sep-2010
• Withdrawal Date: 29-Apr-2011
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• Technical Committee: CEN/TC 211 - Acuostics
• Drafting Committee: CEN/TC 211 - Acuostics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Oct-2010
• Completion Date: 01-Oct-2010
• Directive: 2006/42/EC - 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)
• Directive: 89/392/EEC - Machinery - Safety of machinery: general essential health and safety requirements
• Directive: 98/37/EC - Machinery
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Mandate: M/BC/CEN/88/13 - Standardization request to CEN/CENELEC relating to machinery
• Ref Project: SIST EN ISO 3743-1:2010 - Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010)

Relations

• Replaces: EN ISO 3743-1:2009 - Acoustics - Determination of sound power levels of noise sources - Engineering methods for small, movable sources in reverberant fields - Part 1: Comparison method for hard-walled test rooms (ISO 3743-1:1994)
• Effective Date: 09-Oct-2010

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2010
1DGRPHãþD
SIST EN ISO 3743-1:2009
$NXVWLND8JRWDYOMDQMHUDYQL]YRþQLKPRþLLQUDYQL]YRþQHHQHUJLMHYLURYKUXSD]
]YRþQLPWODNRP,QåHQLUVNHPHWRGH]DPDMKQHSUHPLþQHYLUHYRGPHYQLKSROMLK
GHO3ULPHUMDOQDPHWRGD]DSUHVNXãDQMHYSURVWRUX]]YRþQRUHIOHNVLMVNLPL
RGERMQLPLVWHQDPL,62
Acoustics - Determination of sound power levels and sound energy levels of noise
sources using sound pressure - Engineering methods for small movable sources in
reverberant fields - Part 1: Comparison method for a hard-walled test room (ISO 3743-
1:2010)
Akustik - Bestimmung der Schallleistungs- und der Schallenergiepegel von
Geräuschquellen aus Schalldruckmessengen - Verfahren der Genauigkeitsklasse 2 für
kleine, transportable Quellen in Hallfeldern - Teil 1: Vergleichsverfahren in Prüfräumen
mit schallharten Wänden (ISO 3743-1:2010)
Acoustique - Détermination des niveaux de puissance acoustique et des niveaux
d'énergie acoustique émis par les sources de bruit a partir de la pression acoustique -
Méthode d'expertise en champ réverbéré applicable aux petites sources transportables -
Partie 1: Méthode par comparaison (ISO 3743-1:2010)
Ta slovenski standard je istoveten z: EN ISO 3743-1:2010
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 3743-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2010
ICS 17.140.01 Supersedes EN ISO 3743-1:2009
English Version
Acoustics - Determination of sound power levels and sound
energy levels of noise sources using sound pressure -
Engineering methods for small movable sources in reverberant
fields - Part 1: Comparison method for a hard-walled test room
(ISO 3743-1:2010)
Acoustique - Détermination des niveaux de puissance et Akustik - Bestimmung der Schallleistungs- und
d'énergie acoustiques émis par les sources de bruit à partir
Schallenergiepegel von Geräuschquellen aus
de la pression acoustique - Méthodes d'expertise en champ Schalldruckmessungen - Verfahren der Genauigkeitsklasse
réverbéré applicables aux petites sources transportables - 2 für kleine, transportable Quellen in Hallfeldern - Teil 1:
Partie 1: Méthode par comparaison en salle d'essai à Vergleichsverfahren in einem Prüfraum mit schallharten
parois dures (ISO 3743-1:2010) Wänden (ISO 3743-1:2010)
This European Standard was approved by CEN on 14 August 2010.

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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3743-1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA .4

Foreword
The text of ISO 3743-1:2010 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 3743-1:2010 by
Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS.
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 2011, and conflicting national standards shall be withdrawn at the
latest by April 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 3743-1:2009.
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.
For relationship with EU Directive, 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 3743-1:2010 has been approved by CEN as a EN ISO 3743-1:2010 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the
Essential Requirements of EU Directive 2006/42/EC

This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity
with the relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the products falling
within the scope of this standard.

INTERNATIONAL ISO
STANDARD 3743-1
Second edition
2010-10-01
Acoustics — Determination of sound
power levels and sound energy levels of
noise sources using sound pressure —
Engineering methods for small movable
sources in reverberant fields
Part 1:
Comparison method for a hard-walled
test room
Acoustique — Détermination des niveaux de puissance et d'énergie
acoustiques émis par les sources de bruit à partir de la pression
acoustique — Méthodes d'expertise en champ réverbéré applicables
aux petites sources transportables
Partie 1: Méthode par comparaison en salle d'essai à parois dures

Reference number
ISO 3743-1:2010(E)
©
ISO 2010
ISO 3743-1:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 3743-1:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Test room and size of noise source under test.6
5 Instrumentation and measurement equipment .7
6 Definition, location, installation, and operation of noise source under test.8
7 Measurement procedure.10
8 Determination of sound power levels and sound energy levels .12
9 Measurement uncertainty.16
10 Information to be recorded.19
11 Test report.21
Annex A (normative) Sound power level and sound energy level under reference meteorological
conditions.22
Annex B (normative) Calculation of A-weighted sound power levels and A-weighted sound
energy levels from octave band levels.24
Annex C (informative) Guidelines on the development of information on measurement uncertainty .26
Bibliography.35

ISO 3743-1:2010(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 3743-1 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This second edition cancels and replaces the first edition (ISO 3743-1:1994), which has been technically
revised.
ISO 3743 consists of the following parts, under the general title Acoustics — Determination of sound power
levels and sound energy levels of noise sources using sound pressure — Engineering methods for small
movable sources in reverberant fields:
⎯ Part 1: Comparison method for a hard-walled test room
⎯ Part 2: Methods for special reverberation test rooms

iv © ISO 2010 – All rights reserved

ISO 3743-1:2010(E)
Introduction
[1] [7]
This part of ISO 3743 is an element of the series ISO 3740 to ISO 3747 , which specify various methods
for determining the sound power levels and sound energy levels of noise sources including machinery,
equipment and their sub-assemblies. The selection of one of the methods from the series for use in a
partic
...