EN ISO 5114-1:2024

SLOVENSKI STANDARD
01-september-2024
Akustika - Določanje negotovosti, povezane z meritvami zvočnih emisij - 1. del:
Ravni zvočne moči, določene na podlagi meritev zvočnega tlaka (ISO 5114-1:2024)
Acoustics - Determination of uncertainties associated with sound emission measures -
Part 1: Sound power levels determined from sound pressure measurements (ISO 5114-
1:2024)
Akustik - Bestimmung der Unsicherheiten von Schallemissionsmessgrößen - Teil 1:
Bestimmung von Schallleistungspegeln aus Schalldruckmessungen (ISO 5114-1:2024)
Acoustique - Détermination des incertitudes associées aux mesurages de l’émission
sonore - Partie 1: Niveaux de puissance acoustique déterminés à partir des mesurages
de pression acoustique (ISO 5114-1:2024)
Ta slovenski standard je istoveten z: EN ISO 5114-1:2024
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 5114-1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2024
EUROPÄISCHE NORM
ICS 17.140.01
English Version
Acoustics - Determination of uncertainties associated with
sound emission measures - Part 1: Sound power levels
determined from sound pressure measurements (ISO
5114-1:2024)
Acoustique - Détermination des incertitudes associées Akustik - Bestimmung der Unsicherheiten von
aux mesurages de l'émission sonore - Partie 1: Niveaux Schallemissionsmessgrößen - Teil 1: Bestimmung von
de puissance acoustique déterminés à partir des Schallleistungspegeln aus Schalldruckmessungen (ISO
mesurages de pression acoustique (ISO 5114-1:2024) 5114-1:2024)
This European Standard was approved by CEN on 14 June 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5114-1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 5114-1:2024) 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 December 2024, and conflicting national standards
shall be withdrawn at the latest by December 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.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 5114-1:2024 has been approved by CEN as EN ISO 5114-1:2024 without any
modification.
International
Standard
ISO 5114-1
First edition
Acoustics — Determination of
2024-06
uncertainties associated with sound
emission measures —
Part 1:
Sound power levels determined
from sound pressure measurements
Acoustique — Détermination des incertitudes associées aux
mesurages de l’émission sonore —
Partie 1: Niveaux de puissance acoustique déterminés à partir des
mesurages de pression acoustique
Reference number
ISO 5114-1:2024(en) © ISO 2024

ISO 5114-1:2024(en)
© ISO 2024
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 5114-1:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General concept to describe the uncertainty of measured sound power levels . 2
5 Determination of σ .3
omc
Determination of σ by round robin tests .4
R0
Detailed uncertainty budget to determine σ .6
R0
Determination of σ .7
tot
Annex A (informative) Detailed uncertainty budget for sound power determinations in
(approximated) free fields according to the direct enveloping method . 9
Annex B (informative) Detailed uncertainty budget for sound power determinations in
(approximated) diffuse fields according to the direct method . 17
Annex C (informative) Detailed uncertainty budget for sound power determinations using a
reference sound source .22
Bibliography .26

iii
ISO 5114-1:2024(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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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, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 211,
Acoustics, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
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 5114-1:2024(en)
Introduction
An assessment of uncertainties that is comprehensible and close to reality is indispensable for reporting
and using measured sound power levels. Uncertainties are determined following the principles of
ISO/IEC Guide 98-3. This Guide specifies a detailed procedure for uncertainty evaluation that is based upon
a mathematical model of the measurement. The detailedness of the model can vary from the mere analysis
of the statistical spread of measured sound power levels up to an exhaustive characterisation of all relevant
physical phenomena. Different such models are described by this document.

v
International Standard ISO 5114-1:2024(en)
Acoustics — Determination of uncertainties associated with
sound emission measures —
Part 1:
Sound power levels determined from sound pressure
measurements
1 Scope
This document gives guidance on the determination of measurement uncertainties of sound power levels
determined according to ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3744, ISO 3745, ISO 3746, ISO 3747 or
according to a noise test code based on one of these measurement standards.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
measurement result
value attributed to a particular quantity, obtained by following the complete set of instructions given in a
measurement procedure (the measured value), together with measurement uncertainty
Note 1 to entry: The measurement result can be expressed in terms of a sound power level in octave bands, one-third
octave bands or an A-weighted sound power level.
3.2
measurement unce
...