EN ISO 3740:2019

Acoustics - Determination of sound power levels of noise sources - Guidelines for the use of basic standards (ISO 3740:2019)

ISO 3740:2019 gives guidance for the use of a set of twelve basic International Standards (see Tables 1, 2 and 3) describing various methods for determining sound power levels from all types of machinery, equipment and products. It provides guidance on the selection of one or more of these standards, appropriate to any particular type of sound source, measurement environment and desired accuracy. The guidance given applies to airborne sound. It is for use in the preparation of noise test codes (see ISO 12001) and also in noise emission testing where no specific noise test code exists. Such standardized noise test codes can recommend the application of particular basic International Standard(s) and give detailed requirements on mounting and operating conditions for a particular family to which the machine under test belongs, in accordance with general principles given in the basic standards.
ISO 3740:2019 is not intended to replace any of the details of, or add any additional requirements to, the individual test methods in the basic International Standards referenced.
NOTE 1    Two quantities which complement each other can be used to describe the noise emission of machinery, equipment and products. One is the emission sound pressure level at a specified position and the other is the sound power level. The International Standards which describe the basic methods for determining emission sound pressure levels at work stations and at other specified positions are ISO 11200 to ISO 11205 (References [20] to [25]).
NOTE 2    The sound energy level mentioned in ISO 3741 to ISO 3747 is not addressed in this document as it is not mentioned in any legal requirement. Its application is limited to very special cases of a single burst of sound energy or transient sound defined in ISO 12001.

Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen - Leitlinien zur Anwendung der Grundnormen (ISO 3740:2019)

Dieses Dokument gibt Leitlinien für die Verwendung einer Gruppe von zwölf grundlegenden Internationalen Normen (siehe Tabellen 1, 2 und 3), die verschiedene Verfahren zur Bestimmung von Schallleistungspegeln von allen Arten von Maschinen, Geräten und Produkten beschreiben. Sie gibt Leitlinien zur Auswahl einer oder mehrerer dieser Normen, die für eine bestimmte Art von Schallquelle, Messumgebung und gewünschte Genauigkeit geeignet sind. Die Leitlinien gelten für Luftschall. Sie dient zur Verwendung bei der Erstellung von maschinenspezifischen Geräuschmessnormen (siehe ISO 12001) und auch bei Geräuschemissions¬prüfungen, wenn keine maschinenspezifische Geräuschmessnorm existiert. Solche maschinenspezifischen Geräuschmessnormen können die Anwendung bestimmter grundlegender Internationaler Norm(en) empfehlen und detail¬lierte Anforderungen an die Aufstellungs  und Betriebsbedingungen für eine bestimmte Art, zu der die zu überprüfende Maschine gehört, geben, entsprechend den allgemeinen Grundsätzen, die in den Grundnormen angegeben sind.
Dieses Dokument ist weder dafür vorgesehen, die Einzelheiten der einzelnen Prüfverfahren in den zitierten internationalen Grundnormen zu ersetzen, noch zusätzliche Anforderungen hinzuzufügen.
ANMERKUNG 1   Zur Beschreibung der Geräuschemission von Maschinen, Geräten und Produkten können zwei Größen verwendet werden, die sich gegenseitig ergänzen. Die eine Größe ist der Emissions Schalldruckpegel an einem fest¬gelegten Ort, und die andere ist der Schallleistungspegel. Die Internationalen Normen, die die grundlegenden Verfahren zur Bestimmung der Emissions Schalldruckpegel an Arbeitsplätzen und an anderen festgelegten Orten beschreiben, sind ISO 11200 bis ISO 11205. (Literaturhinweise [20] bis [25]).
ANMERKUNG 2   Der in ISO 3741 bis ISO 3747 genannte Schallenergiepegel wird in diesem Dokument nicht behandelt, da er in keiner gesetzlichen Anforderung erwähnt wird. Seine Anwendung beschränkt sich auf ganz besondere Fälle, wie ein einzelner Schallenergieausstoß oder transienter Schall nach ISO 12001.

Acoustique - Détermination des niveaux de puissance acoustique émis par les sources de bruit - Lignes directrices pour l'utilisation des normes de base (ISO 3740:2019)

L'ISO 3740 :2019 donne des lignes directrices concernant l'utilisation d'une série de douze Normes internationales (voir Tableaux 1, 2 et 3) de base décrivant différentes méthodes de détermination des niveaux de puissance acoustique émis par des machines, des équipements et des produits de tous types. Il fournit des recommandations pour le choix de l'une ou de plusieurs de ces normes appropriées à un type donné de source sonore, l'environnement de mesurage et l'exactitude attendue. Les lignes directrices présentées s'appliquent au bruit aérien. Elles sont destinées à la préparation des codes d'essai acoustiques (voir l'ISO 12001) ainsi qu'aux mesurages de l'émission sonore en l'absence de code spécifique d'essai acoustique. De tels codes d'essai acoustiques normalisés peuvent prescrire l'application de certaines Normes internationales de base et fournir des exigences détaillées relatives aux conditions de montage et de fonctionnement de la famille spécifique à laquelle appartient la machine soumise à essai, conformément aux principes généraux figurant dans les normes de base.
L'ISO 3740 :2019 n'a pas pour objet de remplacer des informations données dans les Normes internationales de base auxquelles il est fait référence ou de leur ajouter des exigences.
NOTE 1    On peut utiliser deux grandeurs qui se complètent pour décrire l'émission sonore des machines, des équipements et des produits. L'une de ces grandeurs est le niveau de pression acoustique d'émission à une position spécifiée et l'autre est le niveau de puissance acoustique. Les normes ISO 11200 à ISO 11205 (Références [20] à [25]) sont des Normes internationales qui décrivent les méthodes de base permettant de déterminer les niveaux de pression acoustique d'émission aux postes de travail et à d'autres positions spécifiées.
NOTE 2    Le niveau d'énergie acoustique mentionné dans les normes ISO 3741 à ISO 3747 n'est pas traité dans le présent document, car il n'est mentionné dans aucune exigence réglementaire. Son application est limitée à des cas très particuliers d'impulsion isolée d'énergie acoustique ou de son transitoire définis dans l'ISO 12001).

Akustika - Ugotavljanje ravni zvočnih moči virov hrupa - Smernice za uporabo temeljnih standardov (ISO 3740:2019)

Ta dokument podaja smernice za uporabo dvanajst temeljnih mednarodnih standardov (glej preglednice 1, 2 in 3), ki opisujejo različne metode za ugotavljanje ravni zvočnih moči vseh vrst strojev, opreme in izdelkov. Podaja smernice za izbiro enega ali več standardov, ki ustrezajo kateri koli določeni vrsti vira hrupa, merilnega okolja in želene natančnosti.
Podane smernice veljajo za zvok v zraku. Uporablja se pri pripravljanju oznak preskusa hrupa (glej standard ISO 12001) in tudi pri preskusih emisij hrupa, kadar posebna oznaka preskusa hrupa ne obstaja. Takšne standardizirane oznake preskusa hrupa lahko priporočijo uporabo posebnih temeljnih mednarodnih standardov in podajajo zahteve glede priključitve in delovanja za posamezno vrsto strojev, ki ji pripada preskušani stroj, v skladu s splošnimi načeli, podanimi v temeljnih standardih.
Ta dokument ni namenjen za zamenjavo nobenih podrobnosti ali dodajanje dodatnih zahtev posameznim preskusnim metodam v temeljnih mednarodnih standardih.
OPOMBA 1: Za opis emisije hrupa strojev, opreme in izdelkov je mogoče uporabiti dve količini, ki druga drugo dopolnjujeta. Prva je raven emisije zvočnega tlaka v določenem položaju, druga pa je raven zvočne moči. Mednarodni standardi, ki opisujejo osnovne metode za ugotavljanje ravni emisij zvočnega tlaka v delovnih postajah in drugih določenih položajih, so standardi od ISO 11200 do ISO 11205 (sklici od [20] do [25]).
OPOMBA 2: Raven zvočne energije, omenjena v standardih od ISO 3741 do ISO 3747, ni obravnavana v tem dokumentu, saj ni omenjena v nobeni zakonski zahtevi. Njena uporaba je omejena na zelo posebne primere enega samega izbruha zvočne energije ali prehodnega zvoka, opredeljene v standardu ISO 12001.

General Information

• Status: Published
• Publication Date: 26-Mar-2019
• Withdrawal Date: 29-Sep-2019
• 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: 27-Mar-2019
• Completion Date: 27-Mar-2019
• 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)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: SIST EN ISO 3740:2019 - Acoustics - Determination of sound power levels of noise sources - Guidelines for the use of basic standards (ISO 3740:2019)

Relations

• Replaces: EN ISO 3740:2000 - Acoustics - Determination of sound power levels of noise sources - Guidelines for the use of basic standards (ISO 3740:2000)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN ISO 3740:2001
Akustika - Ugotavljanje ravni zvočnih moči virov hrupa - Smernice za uporabo
temeljnih standardov (ISO 3740:2019)
Acoustics - Determination of sound power levels of noise sources - Guidelines for the
use of basic standards (ISO 3740:2019)
Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen - Leitlinien zur
Anwendung der Grundnormen (ISO 3740:2019)
Acoustique - Détermination des niveaux de puissance acoustique émis par les sources
de bruit - Lignes directrices pour l'utilisation des normes de base (ISO 3740:2019)
Ta slovenski standard je istoveten z: EN ISO 3740:2019
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 3740
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2019
EUROPÄISCHE NORM
ICS 17.140.01 Supersedes EN ISO 3740:2000
English Version
Acoustics - Determination of sound power levels of noise
sources - Guidelines for the use of basic standards (ISO
3740:2019)
Acoustique - Détermination des niveaux de puissance Akustik - Bestimmung der Schallleistungspegel von
acoustique émis par les sources de bruit - Lignes Geräuschquellen - Leitlinien zur Anwendung der
directrices pour l'utilisation des normes de base (ISO Grundnormen (ISO 3740:2019)
3740:2019)
This European Standard was approved by CEN on 8 February 2019.

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, 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 3740:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 3740:2019) 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 September 2019, and conflicting national standards
shall be withdrawn at the latest by September 2019.
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 3740:2000.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 3740:2019 has been approved by CEN as EN ISO 3740:2019 without any modification.

INTERNATIONAL ISO
STANDARD 3740
Third edition
2019-02
Acoustics — Determination of
sound power levels of noise sources
— Guidelines for the use of basic
standards
Acoustique — Détermination des niveaux de puissance acoustique
émis par les sources de bruit — Lignes directrices pour l'utilisation
des normes de base
Reference number
ISO 3740:2019(E)
©
ISO 2019
ISO 3740:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 3740:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sound power level . 7
4.1 Basic information . 7
4.2 Reasons for the determination of sound power levels . 7
4.3 Basic procedures for determining sound power levels . 7
4.4 Quality of determined sound power levels . 8
4.5 Noise emission declaration . 8
5 Selection of the most appropriate method in the set of standards . 9
5.1 Methods and quantities to be measured and determined. 9
5.2 Considerations affecting the selection of a measurement method . 9
5.3 Test environment .17
5.4 Selection of basic standards appropriate for measurements in laboratory rooms
and special test rooms .17
5.4.1 General.17
5.4.2 Acoustical requirements on the sound field in laboratories and special
test rooms .17
5.4.3 Background noise limitation .17
5.5 Selection of basic standards appropriate for in-situ measurements .18
5.5.1 General.18
5.5.2 Hemi-anechoic sound field check .19
5.6 Determination of high-frequency sound power levels .20
Annex A (informative) Basic International Standards specifying methods for determining
sound power levels of machines, equipment and products — Main facts and
requirements.21
Annex B (informative) Acoustical test environments .23
Annex C (informative) Measurement uncertainty .25
Annex D (informative) Case studies .28
Bibliography .34
ISO 3740:2019(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This third edition cancels and replaces the second edition (ISO 3740:2000), which has been technically
revised. The main change compared to the previous edition is as follows:
— All of the basic standards covered by this document with the exception of the ISO 9614 series
have been revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved

ISO 3740:2019(E)
Introduction
For many users of machinery, equipment and products, the control of noise is a major issue which
requires effective exchange of acoustical information. In this context, the main flow of information goes
from the manufacturer to the purchaser, installer
...