Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms - Amendment 1 (ISO 3745:2012/Amd 1:2017)

Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geräuschquellen aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 1 für reflexionsarme Räume und Halbräume - Änderung 1 (ISO 3745:2012/Amd 1:2017)

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 de laboratoire pour les salles anéchoïques et les salles semi-anéchoïques - Amendement 1 (ISO 3745:2012/Amd 1:2017)

Akustika - Ugotavljanje ravni zvočnih moči in ravni zvočne energije virov hrupa z zvočnim tlakom - Precizijska metoda za gluhe in polgluhe prostore - Dopolnilo A1 (ISO 3745:2012/Amd 1:2017)

General Information

Status
Published
Publication Date
09-May-2017
Technical Committee
Drafting Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
10-May-2017
Completion Date
10-May-2017

RELATIONS

Buy Standard

Amendment
EN ISO 3745:2012/A1:2017
English language
12 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 3745:2012/A1:2017
01-september-2017

$NXVWLND8JRWDYOMDQMHUDYQL]YRþQLKPRþLLQUDYQL]YRþQHHQHUJLMHYLURYKUXSD]

]YRþQLPWODNRP3UHFL]LMVNDPHWRGD]DJOXKHLQSROJOXKHSURVWRUH'RSROQLOR$
,62$PG
Acoustics - Determination of sound power levels and sound energy levels of noise
sources using sound pressure - Precision methods for anechoic rooms and hemi-
anechoic rooms - Amendment 1 (ISO 3745:2012/Amd 1:2017)

Akustik - Bestimmung der Schallleistungs- und Schallenergiepegel von Geräuschquellen

aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 1 für reflexionsarme
Räume und Halbräume - Änderung 1 (ISO 3745:2012/Amd 1:2017)
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 de laboratoire pour les salles anéchoïques et les salles semi-anéchoïques -

Amendement 1 (ISO 3745:2012/Amd 1:2017)
Ta slovenski standard je istoveten z: EN ISO 3745:2012/A1:2017
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
SIST EN ISO 3745:2012/A1:2017 en

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

---------------------- Page: 1 ----------------------
SIST EN ISO 3745:2012/A1:2017
---------------------- Page: 2 ----------------------
SIST EN ISO 3745:2012/A1:2017
EN ISO 3745:2012/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2017
EUROPÄISCHE NORM
ICS 17.140.01
English Version
Acoustics - Determination of sound power levels and
sound energy levels of noise sources using sound pressure
- Precision methods for anechoic rooms and hemi-
anechoic rooms - Amendment 1 (ISO 3745:2012/Amd
1:2017)

Acoustique - Détermination des niveaux de puissance Akustik - Bestimmung der Schallleistungs- und

acoustique et des niveaux d'énergie acoustique émis Schallenergiepegel von Geräuschquellen aus

par les sources de bruit à partir de la pression Schalldruckmessungen - Verfahren der

acoustique - Méthodes de laboratoire pour les salles Genauigkeitsklasse 1 für reflexionsarme Räume und

anéchoïques et les salles semi-anéchoïques - Halbräume - Änderung 1 (ISO 3745:2012/Amd

Amendement 1 (ISO 3745:2012/Amd 1:2017) 1:2017)

This amendment A1 modifies the European Standard EN ISO 3745:2012; it was approved by CEN on 20 March 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of

this amendment into the relevant 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 amendment 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: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3745:2012/A1:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 3745:2012/A1:2017
EN ISO 3745:2012/A1:2017 (E)
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

---------------------- Page: 4 ----------------------
SIST EN ISO 3745:2012/A1:2017
EN ISO 3745:2012/A1:2017 (E)
European foreword

This document (EN ISO 3745:2012/A1:2017) 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 Amendment to the European Standard EN ISO 3745:2012 shall be given the status of a national

standard, either by publication of an identical text or by endorsement, at the latest by November 2017,

and conflicting national standards shall be withdrawn at the latest by November 2017.

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 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 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, 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 3745:2012/Amd 1:2017 has been approved by CEN as EN ISO 3745:2012/A1:2017

without any modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 3745:2012/A1:2017
EN ISO 3745:2012/A1:2017 (E)
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 Remarks/Notes
Directive this EN
1.7.4.2 u) All clauses

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.
---------------------- Page: 6 ----------------------
SIST EN ISO 3745:2012/A1:2017
INTERNATIONAL ISO
STANDARD 3745
Third edition
2012-03-15
AMENDMENT 1
2017-04
Acoustics — Determination of sound
power levels and sound energy levels
of noise sources using sound pressure
— Precision methods for anechoic
rooms and hemi-anechoic rooms
AMENDMENT 1
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 de laboratoire pour les salles
anéchoïques et les salles semi-anéchoïques
AMENDEMENT 1
Reference number
ISO 3745:2012/Amd.1:2017(E)
ISO 2017
---------------------- Page: 7 ----------------------
SIST EN ISO 3745:2012/A1:2017
ISO 3745:2012/Amd.1:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 3745:2012/A1:2017
ISO 3745:2012/Amd.1:2017(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 on 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 the following

URL: w w w . i s o .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.

© ISO 2017 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 3745:2012/A1:2017
---------------------- Page: 10 ----------------------
SIST EN ISO 3745:2012/A1:2017
ISO 3745:2012/Amd.1:2017(E)
Acoustics — Determination of sound power levels and
sound energy levels of noise sources using sound pressure
— Precision methods for anechoic rooms and hemi-
anechoic rooms
AMENDMENT 1
Page 1, Normative references
Add the following reference:

ISO 26101:2017, Acoustics — Test methods for the qualification of free-field environments

Page 29, Annex A
Replace Annex A with the following:
Annex A
(normative)
General procedures for qualification of anechoic and hemi-anechoic rooms
A.1 General

The performance of an anechoic or hemi-anechoic room is tested by comparing the spatial decrease of

sound pressure emitted from a test sound source with the decrease of sound pressure that would occur

in an ideal free sound field. The evaluation of this performance is based on the procedures outlined in

ISO 26101.

This annex contains the qualification criteria and test parameters which are required to qualify test

rooms to the requirements of this document. To conform to this document, when no specific criteria are

given, the requirements appropriate for sound power measurements in ISO 26101 shall be met.

A check of the room performance is recommended after modification of the room absorbers and

periodically at intervals not exceeding 5 years.

The following is a comparison of this annex with ISO 26101 and previous versions of this annex:

a) As in the previous version (ISO 3745:2012, Annex A), this annex requires that test rooms are

qualified using discrete-frequency (e.g. pure tone) measurements unless it is known that the

specific noise source under test radiates only broadband noise (see Note below).

b) Consistent with the wording in ISO 26101, this annex defines methods for “discrete-frequency”

and “broadband” qualification of test rooms. Discrete-frequency qualification is essentially

identical to the pure tone qualification used in the previous versions of this annex. In both cases,

only one pure tone is analysed in each frequency band in Table A.1. The wording change from

“pure tone qualification” is consistent with, for example, common fast Fourier transform methods

such as the use of pseudo random noise and narrow bandwidth analysis; see Reference [37] and

ISO 26101:2017, 5.1.4.1, 5.1.4.2.

c) For the purposes of this document, this annex does not require an evaluation of the position of

the acoustic centre. In this annex
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.