SIST EN 60704-3:2019

Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 3: Procedure for determining and verifying declared noise emission values

This standard describes procedures for determining and verifying the declared values of the noise emitted by household and similar appliances. It applies to all categories of household and similar electrical appliances covered by IEC 60704-1 and all parts of IEC 60704-2, which include particular requirements for special categories of appliances. It applies to appliances being produced in quantity, such as in batches, series or lots, which are manufactured to the same technical specification and characterized by the same declared value of noise emission. This part of IEC 60704: - considers the term "declaration" to include all means for providing information on the noise emission values to potential users (consumers) of the appliances; this includes labels, brochures, advertisements, commercial and technical information papers, etc.; - considers the declaration for appliances manufactured by mass production; - specifies a simple statistical method for verifying the declared values by investigating a sample of only three appliances.

Elektrische Geräte für den Hausgebrauch und ähnliche Zwecke - Prüfvorschrift für die Bestimmung der Luftschallemission - Teil 3: Verfahren zur Bestimmung und Nachprüfung angegebener Geräuschemissionswerte

Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit aérien - Partie 3: Procédure pour déterminer et vérifier l'annonce des valeurs d'émission acoustique

IEC 60704-3:2019 est disponible sous forme de IEC 60704-3:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L'IEC 60704-3:2019 décrit les méthodes de détermination et de vérification des valeurs déclarées du bruit émis par les appareils domestiques et analogues. Elle s'applique à toutes les catégories d'appareils à usage domestique et analogue couverts par l'IEC 60704-1 et toutes les parties de l'IEC 60704-2, qui contiennent des exigences particulières applicables à certaines catégories d'appareils. Elle s'applique aux appareils produits en quantité (en série, en lots) fabriqués suivant les mêmes spécifications techniques et caractérisés par la même valeur déclarée d'émission sonore. La présente partie de l'IEC 60704:
– utilise le terme "déclaration" pour englober tous les moyens utilisés pour fournir des informations sur les valeurs d'émission sonore aux utilisateurs potentiels (consommateurs) des appareils; ce terme inclut les étiquettes, les notices, les publicités, les fiches techniques et commerciales d'information, etc.;
– traite de la déclaration pour des appareils fabriqués en série;
– décrit une méthode statistique simple pour vérifier les valeurs déclarées en étudiant un échantillon limité à trois appareils.
Cette Norme internationale doit être utilisée conjointement avec l'IEC 60704-1:2010 et la dernière édition de l'IEC 60704-2 (toutes les parties).
Cette troisième édition annule et remplace la deuxième édition parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) dans l'Annexe A, les écarts-types qui sont à présent spécifiés pour différentes catégories d'appareils dans les parties de l'IEC 60704-2 ont été exclus du Tableau A.1;
b) en outre, cette édition fait référence à de nouvelles normes et met en application les Directives ISO/IEC, Partie 2 d'une manière plus précise.

Gospodinjski in podobni električni aparati - Preskuševalni kod za ugotavljanje zvočnega hrupa v zraku - 3. del: Postopek za ugotavljanje in potrjevanje določene ravni emisije hrupa

Ta standard opisuje postopke za ugotavljanje in potrjevanje vrednosti hrupa, ki ga oddajajo gospodinjski in podobni električni aparati. Uporablja se za vse kategorije gospodinjskih in podobnih električnih aparatov, ki jih zajema standard IEC 60704-1 in vsi deli standarda IEC 60704-2, ki vključujejo posebne zahteve za posebne kategorije aparatov. Uporablja se za aparate v večjih količinah, kot so svežnji, serije ali loti, ki so izdelani po isti tehnični specifikaciji in za katere je značilno, da imajo enako raven emisije hrupa. Ta del standarda IEC 60704: – predvideva, da izraz »deklaracija« vključuje vsa sredstva za zagotavljanje informacij o vrednostih emisij hrupa potencialnim uporabnikom (potrošnikom) aparatov; to vključuje nalepke, brošure, oglase, komercialne in tehnične informativne dokumente itd.; – upošteva deklaracijo za aparate, izdelane v množični proizvodnji; – določa preprosto statistično metodo za preverjanje prijavljenih vrednosti s preiskavo vzorca samo treh aparatov.

General Information

• Status: Published
• Publication Date: 15-Oct-2019
• ICS: 17.120.20 - Flow in open channels
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 97.030 - Domestic electrical appliances in general
• Technical Committee: FGA - Consumer information related to household electrical appliances
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 10-Oct-2019
• Due Date: 15-Dec-2019
• Completion Date: 16-Oct-2019
• Ref Project: EN 60704-3:2019 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 3: Procedure for determining and verifying declared noise emission values

Relations

• Replaces: SIST EN 60704-3:2006 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise -- Part 3: Procedure for determining and verifying declared noise emission values
• Effective Date: 01-Nov-2019
• Replaces: SIST EN 60704-3:2006 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise -- Part 3: Procedure for determining and verifying declared noise emission values
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60704-3:2019
01-november-2019
Nadomešča:
SIST EN 60704-3:2006
Gospodinjski in podobni električni aparati - Preskuševalni kod za ugotavljanje

zvočnega hrupa v zraku - 3. del: Postopek za ugotavljanje in potrjevanje določene

ravni emisije hrupa

Household and similar electrical appliances - Test code for the determination of airborne

acoustical noise - Part 3: Procedure for determining and verifying declared noise

emission values

Elektrische Geräte für den Hausgebrauch und ähnliche Zwecke - Prüfvorschrift für die

Bestimmung der Luftschallemission - Teil 3: Verfahren zur Bestimmung und
Nachprüfung angegebener Geräuschemissionswerte

Appareils électrodomestiques et analogues - Code d'essai pour la détermination du bruit

aérien - Partie 3: Procédure pour déterminer et vérifier l'annonce des valeurs d'émission

acoustique
Ta slovenski standard je istoveten z: EN 60704-3:2019
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
97.030 Električni aparati za dom na Domestic electrical
splošno appliances in general
SIST EN 60704-3:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60704-3:2019
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SIST EN 60704-3:2019
EUROPEAN STANDARD EN 60704-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2019
ICS 17.120.20; 97.040
Supersedes EN 60704-3:2006 and all of its
amendments and corrigenda (if any)
English Version
Household and similar electrical appliances - Test code for the
determination of airborne acoustical noise - Part 3: Procedure for
determining and verifying declared noise emission values
(IEC 60704-3:2019 , modified)

Appareils électrodomestiques et analogues - Code d'essai Elektrische Geräte für den Hausgebrauch und ähnliche

pour la détermination du bruit aérien - Partie 3: Méthode de Zwecke - Prüfvorschrift für die Bestimmung der

détermination et de vérification des valeurs déclarées Luftschallemission - Teil 3: Verfahren zur Bestimmung und

d'émission sonore Nachprüfung angegebener Geräuschemissionswerte
(IEC 60704-3:2019 , modifiée) (IEC 60704-3:2019 , modifiziert)

This European Standard was approved by CENELEC on 2019-07-02. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60704-3:2019 E
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SIST EN 60704-3:2019
EN 60704-3:2019 (E)
European foreword

The text of document 59/675/CDV, future edition 3 of IEC 60704-3, prepared by IEC/TC 59 "Performance

of household electrical appliances" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN 60704-3:2019.

A draft amendment, which covers common modifications to IEC 60704-3 (59/675/CDV), was prepared by

CLC/TC 59X "Performance of household and similar electrical appliances" and approved by CENELEC.

The following dates are fixed:
• latest date by which this document has (dop) 2020-07-02
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2022-07-02
standards conflicting with this
document have to be withdrawn

EN 60704-3:2019 supersedes EN 60704-3:2006 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 60704-3:2019 was approved by CENELEC as a European

Standard with agreed common modifications.
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SIST EN 60704-3:2019
EN 60704-3:2019 (E)
COMMON MODIFICATIONS
Introduction
Add the following paragraph:

Requirements on noise are requested in European delegated regulations supplementing Regulation (EU)

2017/1369 and regulations implementing EU Directive on ecodesign (2009/125/EC). Verification of noise

is set out in these regulations also. Commission delegated regulation (EU) 2017/254 and Commission

regulation (EU) 2016/2282 set out requirements on the use of tolerances in verification procedures.

These requirements are different from the statistical approach laid down in standard IEC 60704-3:2019.

Therefore, there is an addition to Clause 5.1. For determination purpose Clause 6 provides an option.

Caution is to be taken as the statistical approach is not aligned with requirements set out in the EU

regulations on verification.
5 Verification of declared noise emission values
5.1 Basis of the procedure
Add a paragraph at top of this clause as follows:

For verification of declared noise emission values related to EU regulations on energy labelling and

ecodesign this clause is not applicable. The criteria for pass and fail are laid down in these regulations.

NOTE Applicable EU regulations are available at Official Journal of the European Union.

Example “The determined value shall not exceed the declared value of LWA.”, see Commission Delegated

Regulation (EU) No 65/2014 on range hoods, Annex VIII.
6 Determination of noise emission values for declaration
6.1 Determination procedure
Add the following paragraph:

Caution shall be taken when applying the method described in 6.2 and 6.3 for the purpose of declaration

of sound power values for EU energy labelling and proofing compliance with EU requirements on

ecodesign. Paragraphs 6.2 and 6.3 are describing a statistical procedure for the determination of noise

which is aligned with the statistical verification procedure detailed in EN 60704-3:2019, Clause 5.

However, this approach does not fit with the requirements set out in said EU regulations.

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SIST EN 60704-3:2019
EN 60704-3:2019 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60704-1 2010 Household and similar electrical appliances - EN 60704-1 2010
Test code for the determination of airborne
noise - Part 1: General requirements
+A11 2012

IEC 60704-2 series Household and similar electrical appliances - EN 60704-2 series

Test code for the determination of airborne
acoustical noise
ISO 3534-1 2006 Statistics - Vocabulary and symbols - Part 1: - -
General statistical terms and terms used in
probability
ISO 7574-1 1985 Acoustics - Statistical methods for EN 27574-1 1988
determining and verifying stated noise
emission values of machinery and
equipment - Part 1: General considerations
and definitions
ISO 7574-4 1985 Acoustics - Statistical methods for EN 27574-4 1988
determining and verifying stated noise
emission values of machinery and
equipment - Part 4: Methods for stated
values for batches of machines
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SIST EN 60704-3:2019
EN 60704-3:2019 (E)
Bibliography
Add the following publications

DIRECTIVE 2009/125/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 October

2009 establishing a framework for the setting of ecodesign requirements for energy-related products

REGULATION (EU) 2017/1369 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 4 July

2017 setting a framework for energy labelling and repealing Directive 2010/30/EU

COMMISSION DELEGATED REGULATION (EU) No 65/2014 of 1 October 2013 supplementing Directive

2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of domestic

ovens and range hoods

COMMISSION REGULATION (EU) 2016/2282 of 30 November 2016 amending Regulations (...) with

regard to the use of tolerances in verification procedures

COMMISSION DELEGATED REGULATION (EU) 2017/254 of 30 November 2016 amending Delegated

Regulations (…) with regard to the use of tolerances in verification procedures
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SIST EN 60704-3:2019
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SIST EN 60704-3:2019
IEC 60704-3
Edition 3.0 2019-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Household and similar electrical appliances – Test code for the determination
of airborne acoustical noise –
Part 3: Procedure for determining and verifying declared noise emission values
Appareils électrodomestiques et analogues – Code d'essai pour la
détermination du bruit aérien –
Partie 3: Méthode de détermination et de vérification des valeurs déclarées
d'émission sonore
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20; 97.030 ISBN 978-2-8322-6975-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60704-3:2019
– 2 – IEC 60704-3:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and calculations .................................................................................. 6

3.1 Terms and definitions .............................................................................................. 6

3.2 Calculations .......................................................................................................... 11

4 General ......................................................................................................................... 12

4.1 Test method .......................................................................................................... 12

4.2 Values and symbols .............................................................................................. 12

4.3 Reference standard deviation ............................................................................... 13

5 Verification of declared noise emission values ............................................................... 13

5.1 Basis of the procedure .......................................................................................... 13

5.2 Verification procedure ........................................................................................... 14

6 Determination of noise emission values for declaration .................................................. 14

6.1 Basis of the procedure .......................................................................................... 14

6.2 Determination procedure ....................................................................................... 14

6.3 Presentation of noise emission values .................................................................. 14

Annex A (normative) Noise emission of household appliances – Standard deviations .......... 16

Annex B (informative) Verification of noise emission values – Examples .............................. 17

B.1 Example 1 ............................................................................................................. 17

B.2 Example 2 ............................................................................................................. 17

Annex C (informative) Determination of noise emission values – Examples ......................... 18

C.1 Example 1 ............................................................................................................. 18

C.2 Example 2 ............................................................................................................. 18

C.3 Example 3 ............................................................................................................. 19

Bibliography .......................................................................................................................... 20

Figure 1 – Quantile of the standardized distribution .............................................................. 13

Table A.1 – Standard deviation ............................................................................................. 16

Table C.1 – Calculated noise emission values as a function of the total standard

deviation σ and the probability of acceptance P as assumed by the labeller ....................... 18

t a
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SIST EN 60704-3:2019
IEC 60704-3:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF AIRBORNE
ACOUSTICAL NOISE –
Part 3: Procedure for determining and verifying
declared noise emission values
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC

Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60704-3 has been prepared by IEC technical committee 59:

Performance of household electrical appliances.
IEC 60704-1:2010 has served as a basis for the elaboration of this standard.

This third edition cancels and replaces the second edition published in 2006. This edition

constitutes a technical revision. It includes the following significant technical changes with

respect to the previous edition:

a) in Annex A, standard deviations that are now specified for various appliance categories in

the parts of IEC 60704-2 have been excluded from Table A.1;

b) furthermore, this edition makes reference to new standards and is implementing

ISO/IEC Directives, Part 2 in a more accurate manner.

Standard deviations specified in part 2 documents of the IEC 60704 series supersede the

values given in Table A.1.
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SIST EN 60704-3:2019
– 4 – IEC 60704-3:2019 © IEC 2019
The text of this International Standard is based on the following documents:
CDV Report on voting
59/675/CDV 59/680A/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

This International Standard is to be used in conjunction with IEC 60704-1:2010 and the latest

edition of IEC 60704-2 (all parts).

A list of all parts in the IEC 60704 series, published under the general title Household and

similar electrical appliances – Test code for the determination of airborne acoustical noise,

can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The “colour inside” logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct understanding

of its contents. Users should therefore print this publication using a colour printer.

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SIST EN 60704-3:2019
IEC 60704-3:2019 © IEC 2019 – 5 –
INTRODUCTION

A comprehensive and correct declaration of noise emission is very helpful to enable the

potential buyer to make a good choice between appliances of the same category (serving for

the same purpose) of different makes or for different models.

In order to ensure a correct declaration of noise emission values, this part of IEC 60704

describes a simple method for verifying declared values and provides information for

determining the noise emission values.

Different countries are implementing different market surveillance strategies. This document

is not implementing a mandatory market surveillance strategy.
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SIST EN 60704-3:2019
– 6 – IEC 60704-3:2019 © IEC 2019
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION OF AIRBORNE
ACOUSTICAL NOISE –
Part 3: Procedure for determining and verifying
declared noise emission values
1 Scope

This part of IEC 60704 describes procedures for determining and verifying the declared

values of the noise emitted by household and similar appliances.

It applies to all categories of household and similar electrical appliances covered by

IEC 60704-1 and all parts of IEC 60704-2, which include particular requirements for special

categories of appliances.

It applies to appliances being produced in quantity, such as in batches, series or lots, which

are manufactured to the same technical specification and characterized by the same declared

value of noise emission.
This part of IEC 60704:

– considers the term "declaration" to include all means for providing information on the noise

emission values to potential users (consumers) of the appliances; this includes labels,

brochures, advertisements, commercial and technical information papers, etc.;
– considers the declaration for appliances manufactured by mass production;

– specifies a simple statistical method for verifying the declared values by investigating a

sample of only three appliances.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.

IEC 60704-1:2010, Household and similar electrical appliances – Test code for the

determination of airborne acoustical noise – Part 1: General requirements

IEC 60704-2 (all parts), Household and similar electrical appliances – Test code for the

determination of airborne acoustical noise – Part 2: Particular requirements

ISO 3534-1:2006, Statistics – Vocabulary and symbols – Part 1: Probability and general

statistical terms

ISO 7574-4:1985, Acoustics – Statistical methods for determining and verifying stated noise

emission values of machinery and equipment – Part 4: Methods for stated values for batches

of machines
3 Terms, definitions and calculations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60704-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
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SIST EN 60704-3:2019
IEC 60704-3:2019 © IEC 2019 – 7 –
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
sound power level

ten times the logarithm to the base 10 of the ratio of the sound power of a source to the

reference sound power, expressed in decibels
−12

Note 1 to entry: The reference sound power is 1 pW (10 W). The frequency weighting, or the midband

frequency of the frequency band used, is indicated in the symbol.
Note 2 to entry: For example, the A-weighted sound power level is L .
3.1.2
A-weighted sound power level

sound power level of an appliance, determined according to the appropriate requirements

specified in IEC 60704-1 and the relevant part of IEC 60704-2

Note 1 to entry: Henceforth, the subscript is left out for reasons of simplicity.

3.1.3
noise emission value
single value of the noise emission quantity
3.1.4
measured value

noise emission value for an individual appliance determined in accordance with the

appropriate requirements of IEC 60704
3.1.5
family of appliances
category of appliances
appliances of similar design or type, or intended to perform the same functions

[SOURCE: ISO 7574-1:1985, 3.5, modified – The notes have been deleted, "category of

appliances" has been added as a preferred term, "machines" has been replaced by

"appliances" in the term and in the definition, and "or equipment" has been deleted from the

definition.]
3.1.6
declared value

value of the noise emission quantity which is rounded to the nearest decibel stated for all

appliances of a complete series of production or of a batch thereof, when the appliances are

new

Note 1 to entry: The declared value indicates the upper statistical value below which a specified large proportion

of noise emission values of the relevant batch lies. L depends on the specified verification procedure, which is

designed such that there is a probability of acceptance of 95 % for the batch, when no more than 6,5 % of all noise

emission values exceeds L , and if the specified reference standard deviations σ equals the actual total standard

c M
deviation σ .

[SOURCE: ISO 7574-1:1985, 3.6, modified – The term "stated value; labelled value" has been

replaced by "declared value"; the first sentence has been rephrased to "which is rounded to

the nearest decibel stated for all appliances of a complete series of production or of a batch

thereof" and "when the appliances are new" has been added; the second sentence has been

deleted; the fact "are new" is integrated in first sentence and notes 1 and 2 have been

replaced by a Note 1 to entry.]
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SIST EN 60704-3:2019
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3.1.7
declaration

statement of the declared value, L , which is included in brochures, advertisements, product

or commercial literature and/or affixed to an appliance or part thereof for providing information

on the noise emission values to potential users (buyers, consumers) of the appliance

Note 1 to entry: The term "labeller" is used in this document for a person making declarations.

[SOURCE: ISO 7574-1:1985, 3.7, modified – The term "label" has been replaced by

"declaration", "brochures, advertisements, or commercial literature" have been added, the

phrase after "and/or affixed" has been replaced by "to an appliance or part thereof for

providing information on the noise emission values to potential users (buyers, consumers) of

the appliance" and Note 1 to entry has been added.]
3.1.8
batch of appliances

group of the same family produced in quantity, manufactured to the same technical

specifications and characterized by the same declared value, L

Note 1 to entry: A batch may be either an entire production series or a portion thereof.

[SOURCE: ISO 7574-1:1985, 3.8, modified – The term "batch (lot) of machines" has been

replaced by "batch of appliances" and the note has been transferred into Note 1 to entry.]

3.1.9
size of the batch
size of the population

number of items (appliances in the batch or noise emission values in the population) of the

batch (or of the population)

[SOURCE: ISO 7574-1:1985, 3.9, modified – The term "size of the population" has been

explicitely added as a preferred term, word "machines" is replaced by "appliances" and

phrase "of the batch (or of the population)" is added.]
3.1.10
sample

one or more appliances (or measured values) randomly selected from a lot (or population)

[SOURCE: ISO 7574-1:1985, 3.10, modified – "Machines" is replaced by "appliances".]

3.1.11
size of the sample
number of items in the sample
[SOURCE: ISO 7574-1:1985, 3.11].
3.1.12
arithmetic mean of a batch
arithmetic mean of a population

sum of the noise emission values in a batch (or in a population) divided by the size of the

batch (or of the population)

[SOURCE: ISO 7574-1:1985, 3.12, modified – The term "arithmetic mean of a population"

has been explicitly added and the formula has been deleted.]
3.1.13
arithmetic mean of a sample
sum of the measured values, L , in a sample divided by the size of the sample
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SIST EN 60704-3:2019
IEC 60704-3:2019 © IEC 2019 – 9 –

Note 1 to entry: The arithmetic mean value of the sample, is used as an estimator of the mean value of a batch

(or of
...