EN ISO 9614-1:2009

Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993)

Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined. The one-octave, one-third-octave or band-limited weighted sound power level is calculated from the measured value. The method is applicable in situ or in special purpose test environments to any source for which a physically stationary measurement surface can be defined, and on which the noise generated by the source is stationary in time.

Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus Schallintensitätsmessungen - Teil 1: Messungen an diskreten Punkten (ISO 9614-1:1993)

1.1 Dieser Teil von ISO 9614 legt ein Verfahren fest zur Messung der zu einer Messfläche senkrechten
Komponente der Schallintensität; die Messfläche wird so gewählt, dass sie die Schallquelle(n), deren Schallleistungspegel
bestimmt werden soll, einschließt. Der Oktav-, Terz- oder bandbegrenzte Schallleistungspegel
wird aus den gemessenen Werten berechnet. Das Verfahren ist auf jede Quelle anwendbar, für die eine
räumlich stationäre Messfläche definiert werden kann und auf welcher der durch die Quelle verursachte Schall
zeitlich stationär ist (wie in 3.13 definiert). Die Quelle wird durch die Wahl der Messfläche definiert. Das
Verfahren kann vor Ort (in situ) oder in speziellen Messumgebungen angewendet werden.
1.2 Dieser Teil von ISO 9614 ist für Quellen in einer beliebigen Umgebung anwendbar, die sich zeitlich so
wenig verändert, dass die Genauigkeit der Schallintensitätsmessung nicht auf ein unannehmbares Maß
reduziert wird und in welcher die Intensitätsmesssonde nicht zu hohen oder schwankenden Gasströmungen
ausgesetzt ist (siehe 5.3 und 5.4).
In einigen Fällen können die Messbedingungen zu ungünstig sein, um die Anforderungen dieses Teils von
ISO 9614 zu erfüllen. Besonders Fremdschallpegel können sich während der Messung in extremem Maße
verändern. In solchen Fällen ist das in diesem Teil von ISO 9614 angegebene Verfahren für die Bestimmung
des Schallleistungspegels der Quelle nicht geeignet.
ANMERKUNG 1 Andere Verfahren, z. B. die Bestimmung des Schallleistungspegels aus Oberflächen-Körperschallpegeln,
wie in ISO/TR 7849 beschrieben, können in gewissen Fällen geeigneter sein.
1.3 Dieser Teil von ISO 9614 legt bestimmte, in Anhang B beschriebene Zusatzverfahren fest, die in
Zusammenhang mit der Schallleistungsbestimmung durchzuführen sind. Die Ergebnisse werden dazu
verwendet, die Qualität der Schallleistungsbestimmung und somit die Genauigkeitsklasse zu ermitteln.

Acoustique - Détermination par intensimétrie des niveaux de puissance acoustique émis par les sources de bruit - Partie 1: Mesurages par points (ISO 9614-1:1993)

1.1 La présente partie de l'ISO 9614 prescrit une méthode de mesurage de la composante de l'intensité acoustique normale à une surface de mesurage entourant la (les) source(s) de bruit dont on souhaite déterminer le niveau de puissance acoustique. À partir des valeurs mesurées, on calcule le niveau de puissance acoustique par bandes d'octave ou de tiers d'octave, ou le niveau pondéré sur un nombre de bandes restreint. La méthode est applicable à toute source pour laquelle on peut définir une surface de mesurage physiquement stable et sur laquelle les signaux acoustiques émis par la source soient stables dans le temps (comme défini en 3.13). La source est définie par le choix de la surface de mesurage. La méthode peut être appliquée in situ ou dans des environnements d'essai particuliers. 1.2 La présente partie de l'ISO 9614 est applicable à des sources situées dans un environnement quelconque mais dont la variabilité temporelle soit suffisamment faible pour que l'exactitude de mesure reste acceptable, et dans lequel la sonde intensimétrique ne soit pas soumise à des écoulements gazeux trop rapide 1115s ou instables (voir 5.3 et 5.4). Dans certains cas, les conditions d'essai s'avèreront trop défavorables pour que les prescriptions de la présente partie de l'ISO 9614 soient satisfaites. Les variations du niveau de bruit parasite pendant l'essai, notamment, peuvent être excessives. Dans ce cas, la méthode prescrite par la présente partie de l'ISO 9614 n'est pas applicable à la détermination du niveau de puissance acoustique d'une source.  
NOTE 1 D'autres méthodes, par exemple la détermination des niveaux de puissance acoustique à partir des niveaux vibratoires en surface selon l'ISO/TR 7849, peuvent alors mieux convenir. 1.3 La présente partie de l'ISO 9614 prescrit certaines procédures complémentaires, décrites dans l'annexe B, à appliquer lors de la détermination de la puissance acoustique. Les résultats obtenus indiquent la qualité de la déterminatio

Akustika - Ugotavljanje ravni zvočnih moči virov hrupa z merjenjem jakosti zvoka - 1. del: Merjenje na diskretnih točkah (ISO 9614-1:1993)

General Information

• Status: Published
• Publication Date: 04-Aug-2009
• Withdrawal Date: 27-Feb-2010
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• ICS: 17.140.20 - Noise emitted by machines and equipment
• Technical Committee: CEN/TC 211 - Acuostics
• Drafting Committee: CEN/TC 211 - Acuostics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 05-Aug-2009
• Due Date: 25-Sep-2010
• Completion Date: 05-Aug-2009
• 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/BC/CEN/88/13 - Standardization request to CEN/CENELEC relating to machinery
• Ref Project: SIST EN ISO 9614-1:2009 - Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993)

Relations

• Replaces: EN ISO 9614-1:1995 - Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurements at discrete points (ISO 9614-1:1993)
• Effective Date: 08-Aug-2009

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2009
1DGRPHãþD
SIST EN ISO 9614-1:1997
$NXVWLND8JRWDYOMDQMHUDYQL]YRþQLKPRþLYLURYKUXSD]PHUMHQMHPMDNRVWL]YRND
GHO0HUMHQMHQDGLVNUHWQLKWRþNDK,62
Acoustics - Determination of sound power levels of noise sources using sound intensity -
Part 1: Measurement at discrete points (ISO 9614-1:1993)
Akustik - Bestimmung der Schalleistungspegel von Schallquellen aus
Schallintensitätsmessungen - Teil 1: Messungen an diskreten Punkten (ISO 9614-
1:1993)
Acoustique - Détermination par intensimétrie des niveaux de puissance acoustique émis
par les sources de bruit - Partie 1: Mesurages par points (ISO 9614-1:1993)
Ta slovenski standard je istoveten z: EN ISO 9614-1:2009
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 9614-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2009
ICS 17.140.01 Supersedes EN ISO 9614-1:1995
English Version
Acoustics - Determination of sound power levels of noise
sources using sound intensity - Part 1: Measurement at discrete
points (ISO 9614-1:1993)
Acoustique - Détermination par intensimétrie des niveaux Akustik - Bestimmung der Schalleistungspegel von
de puissance acoustique émis par les sources de bruit - Schallquellen aus Schallintensitätsmessungen - Teil 1:
Partie 1: Mesurages par points (ISO 9614-1:1993) Messungen an diskreten Punkten (ISO 9614-1:1993)
This European Standard was approved by CEN on 20 July 2009.
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, 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
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9614-1:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC .4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .5

Foreword
The text of ISO 9614-1:1993 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 9614-1:2009 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 February 2010, and conflicting national standards shall be withdrawn
at the latest by February 2010.
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 9614-1:1995.
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 EC Directives.
For relationship with EC Directives, see informative Annexes ZA and ZB, which are integral parts 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, 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 9614-1:1993 has been approved by CEN as a EN ISO 9614-1:2009 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/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 a means of conforming to Essential Requirements of the
New Approach Directive 98/37/EC, amended by 98/79/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 product(s) falling within the
scope of this standard.
Annex ZB
(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 a 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 product(s) falling within
the scope of this standard.
INTERNATIONAL
IS0
STANDARD
9614-1
First edition
1993-06-01
Acoustics - Determination of sound
.
power levels of noise sources using sound
intensity -
Part 1:
Measurement at discrete points
Acoustique - Dgtermination par intensimhrie des niveaux de puissance
acoustique 6mis par /es sources de bruit -
Partie 1: Mesurages par points
Reference number
IS0 9614-l :1993(E)
IS0 9614=1:1993(E)
Contents
Page
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Definitions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 General requirements
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Acoustic environment
6 Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .I. 5
7 Installation and operation of the source
. . . . 6
8 Measurement of normal sound intensity component levels
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Calculation of sound power level
,.
10 Information to be reported
Annexes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Calculation of field indicators
........... 12
B Procedure for achieving a desired grade of accuracy
......... 16
C Effects of airflow on measurement of sound intensity
D Effect of sound absorption within the measurement surface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E Bibliography
0 IS0 1993
All rights resewed. No part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
IS0 9614=1:1993(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
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.
International Standard IS0 9614-1 was prepared by Technical Committee
lSO/lC 43, Acoustics, Sub-Committee SC 1, Noise.
IS0 9614 consists of the following parts, under the general title
Acoustics - Determination of sound power levels of noise sources using
sound intensity:
- Part I: Measurement at discrete points
- Part 2: Measurement by scanning
Annexes A and B form an integral part of this part of IS0 9614. Annexes
C, D and E are for information only.

IS0 9614=1:1993(E)
Introduction
0.1 The sound power radiated by a source is equal in value to the inte-
gral of the scalar product of the sound intensity vector and the associated
elemental area vector over any surface totally enclosing the source. Pre-
vious International Standards which describe methods of determination
of sound power levels of noise sources, principally IS0 3740 to IS0 3747,
without exception specify sound pressure level as the primary acoustic
quantity to be measured. The relationship between sound intensity level
and sound pressure level at any point depends on the characteristics of
the source, the characteristics of the measurement environment, and the
disposition of the measurement positions with respect to the source.
Therefore IS0 3740 to IS0 3747 necessarily specify the source charac-
teristics, the test environment characteristics and qualification procedures,
together with measurement methods which are expected to restrict the
uncertainty of the sound power level determination to within acceptable
limits.
The procedures specified in IS0 3740 to IS0 3747 are not always appro-
priate, for the following reasons.
a) Costly facilities are necessary if high precision is required. It is fre-
quently not possible to install and operate large pieces of equipment
in such facilities.
b) They cann ot be used in the prese nce of high levels of extraneo us noise
gene rated by sources other than that under investigation.
The purpose of IS0 9614 is to specify methods whereby the sound power
levels of sources may be determined, within specific ranges of uncer-
tainty, under test conditions which are less restricted than those required
by the series IS0 3740 to IS0 3747. The sound power is the in situ sound
power as determined by the procedure of this part of IS0 9614; it is
physically a function of the environment, and may in some cases differ
from the sound power of the same source determined under other con-
ditions.
This part of IS0 9614 complements the series IS0 3740 to IS0 3747
0.2
which specify various methods for the determination of sound power lev-
els of machines and equipment. It differs from these International Stan-
dards principally in three aspects.
a) Measurements are made of sound intensity as well as of sound
pressure.
b) The uncertainty of the sound power level determined by the method
specified in this part of IS0 9614 is classified according to the results
of specified ancillary tests and calculations performed in association
with the test measurements.
IS0 9614=1:199
...