Acoustics - Procedure for the comparison of noise-emission data for machinery and equipment (ISO 11689:1996)

The standard describes the method used to establish the level of noise control technology of a machine group with the aid of noise emission levels. The standard is applicable to any kind of machine. The level of noise control technology can only be determined on the basis of noise emission data determined for each machine group under conditions defined in noise test codes. The noise emission data collected is of use to a) the designer requiring information about noise levels for a particular type of machine, eg. when establishing target values in the initial stages of design; ...

Akustik - Vorgehensweise für den Vergleich von Geräuschemissionswerten für Maschinen und Geräte (ISO 11689:1996)

Diese Internationale Norm beschreibt ein Verfahren für die Festlegung des schalltechnischen Niveaus einer Maschinen- oder Anlagengattung, -art, -gruppe oder -untergruppe auf der Grundlage von Geräuschemissionspegeln. Es ist im Prinzip auf jede Art von Maschinen oder Anlagen anwendbar, für die eine Geräuschmessvorschrift existiert.

Acoustique - Procédure de comparaison des données d'émission sonore des machines et équipements (ISO 11689:1996)

La présente Norme internationale prescrit une méthode permettant d'établir la performance de réduction du bruit pour une famille, un type, un groupe ou un sous-groupe de machines ou d'équipements sur la base des niveaux d'émission sonore. Elle est en principe applicable à toutes sortes de machines ou d'équipements pour lesquels un code d'essai acoustique existe ou pour lesquels des données d'émission sonore comparables sont disponibles.  
NOTE 1 La procédure générale proposée par la présente Norme internationale est, dans son principe, applicable à d'autres agents physiques (par exemple les vibrations). La présente Norme internationale décrit les méthodes et les exigences concernant la comparaison de données d'émission sonore permettant d'utiliser celles-ci pour la détermination de la performance de réduction du bruit. Les méthodes présentées permettent l'évaluation de l'émission sonore de machines prises isolément ou d'un même type de machines au sein d'un groupe, c'est-à-dire permettent la comparaison d'un point de vue acoustique de machines dont les données non acoustiques et les domaines d'application sont comparables. Un exemple décrivant comment peut être effectuée l'évaluation des données d'émission sonore collectées pour un groupe de machines est présenté dans l'annexe B.

Akustika - Postopek za primerjavo podatkov o emisiji hrupa naprav in opreme (ISO 11689:1996)

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SIST EN ISO 11689:1999
Akustika - Postopek za primerjavo podatkov o emisiji hrupa naprav in opreme (ISO

Acoustics - Procedure for the comparison of noise-emission data for machinery and

equipment (ISO 11689:1996)
Akustik - Vorgehensweise für den Vergleich von Geräuschemissionswerten für
Maschinen und Geräte (ISO 11689:1996)
Acoustique - Procédure de comparaison des données d'émission sonore des machines
et équipements (ISO 11689:1996)
Ta slovenski standard je istoveten z: EN ISO 11689:1996
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
SIST EN ISO 11689:1999 en

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

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SIST EN ISO 11689:1999
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SIST EN ISO 11689:1999
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SIST EN ISO 11689:1999
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SIST EN ISO 11689:1999
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SIST EN ISO 11689:1999
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SIST EN ISO 11689:1999
First edition
1996-l 2-15
- Procedure for the comparison
of noise-emission data for machinery and
Acoustique - Procbdure de comparaison des don&es d’kmission sonore
des machines et Bquipements
Reference number
IS0 11689: 1996(E)
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SIST EN ISO 11689:1999
BSO 14689:1996(E)

1 Scope ...............................................................................................

2 Normative reference

3 Definitions .........................................................................................

4 Machine classification

5 Noise-emission data .........................................................................

6 Presentation of noise-emission values
7 Evaluation of noise-emission data
8 Steps to be followed when determining noise-control

performance .....................................................................................

9 Information to be recorded
10 Information to be reported
..................................................... 7
A Calculation of a linear regression
B Examples of evaluation of noise-emission data
C Example of the presentation of noise-emission data in accordance
............... 13
with this International Standard (form sheet to be copied)

D Biblioaraphv ......................................................................................

0 IS0 1996

All rights reserved. Unless otherwise specified, 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 permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
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SIST EN ISO 11689:1999
IS0 11689: 1996(E)
@ IS0
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 collabo-
rates 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 11689 was prepared by Technical Committee
lSO/TC 43, Acoustics, Subcommittee SC 1, Noise, on request by
CENRC 211, Acoustics.
Annexes A to D of this International Standard are for information only.
. . .
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SIST EN ISO 11689:1999
IS0 11689: 1996(E) @ IS0
National and international regulations increasingly require the production
and use of low-noise machinery and equipment. This implies that manufac-
turers, users of machinery and equipment and authorities are aware of the
noise emission of a particular product in relation to the noise emission of
the relevant machine family. This will only be possible if reliable information
on the actual noise emission is available or can be determined.
Based on this information, any index of noise-control performance can be
determined for a well-defined family, type or group of machinery or equip-
ment available on the market at a stated time.
The comparison and evaluation of noise-emission data are of use to
a designer requiring information about noise levels for a particular
family, for example when specifying the desired properties of a new
a user and/or buyer of machinery or equipment belonging to a specific
family, who wishes to compare similar machinery or equipment avail-
able on the market with regard to noise emission;
working groups preparing machinery safety standards, noise test codes
and/or noise guidelines relating to a particular family;
authorities in charge of legislation, labour supervision and inspection,
health and safety at work;
manufacturers and potential users of noise-emission data bases;
consultants in acoustics using appropriate techniques for performing a
f )
first evaluation of the noise level on a site.
In addition to knowledge about noise control at source by design, the
evaluation procedure requires particular knowledge of the machine group
in question.
Collecting noise-emission data and editing clusters of noise-emission data
are the responsibility of a committee of the parties involved (e.g. manufac-
turers, authorities or consumer organisations).
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SIST EN ISO 11689:1999
Acoustics - Procedure for the comparison of
noise-emission data for machinery and equipment
on this International Standard are encouraged to
1 Scope
investigate the possibility of applying the most recent
edition of the standard indicated below. Members of
This International Standard specifies a method for
IEC and IS0 maintain registers of currently valid
establishing the noise-control performance for a
International Standards.
family, type, group or sub-group of machinery or
equipment on the basis of noise-emission data. It is, in
IS0 12001 :I 996, Acoustics - Noise emitted by
principle, applicable to any kind of machinery or
machinery and equipment - Rules for the drafting
equipment for which a noise test code exists or com-
and presentation of a noise test code.
parable noise-emission data are available.
NOTE 1 The general procedure described in this Bnter-
national Standard is, in principle, applicable to other physi-
3 Definitions
cal agents (e.g. vibration).
For the purposes of this International Standard, the
This International Standard specifies methods and
definitions given in IS0 12001 and the following defi-
requirements for comparison of noise-emission data
nitions apply.
so that they can be used for the determination of
noise-control performance.
3.1 family of machinery or equipment: Machinery
or equipment of similar design or type, intended to
The methods presented allow evaluation of the noise
perform the same functions.
emission of individual machines or of a single type of
machine within a machine group, i.e. allow a compari-
3.2 measured noise-emission value: Value of the
son of the acoustical aspects of machines with com-
time-averaged A-weighted sound power level LWA, or
parable non-acoustical data and fields of application.
the A-weighted emission sound pressure level Lp~, or
the C-weighted peak emission sound pressure level
Annex B gives examples of how the evaluation of
Lpc peak determined from measurements.
collected noise-emission data for a machine group can
be carried out.
3.3 declared noise-emission value: Value of the
declared A-weighted sound power level LWAd, the
declared A-weighted emission sound pressure level
2 Normative reference
or the declared C-weighted peak emission
Lp Ad 9
sound pressure level, Lpc peak d.
The following standard contains provisions which,
through reference in this text, constitute provisions of
3.4 characteristic machine parameter: Non-acous-
this International Standard. At the time of publication,
tic quantity which characterizes a particular group of
the edition indicated was valid. All standards are
subject to revision, and parties to agreements based
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SIST EN ISO 11689:1999
IS0 11689: 1996(E) @ IS0
NOTE 2 Its value varies between the individual machi
5 Noise-emission data
within the group (e.g. power, speed load, dimension).
5.1 Noise-emission quantities
3.5 noise-control performance: Performance deter-
The following types of noise-emission quantities are
mined by the noise emission of all machines in a given
set. (See classification in clause 4.) L-lines can be
used for its description (see 3.7).
a) Principal noise-emission quantities:
A-weighted sound power level LWA;
3.6 cumulative frequency of noise-emission
values: Number of observations in a set, which have
A-weighted emission sound pressure level L+
values equal to or less than a given value. (See
at the work station (operator position) or at
clause 7.)
other specified positions;
C-weighted peak emission sound pressure
3.7 L-lines: Lines which are parallel to the re-
level9 L&peak=
gression line (see annex A) and below which a speci-
fied percentage of the noise-emission values lies (see
b) Additional noise-emission quantities:
clause 7).
- Surface emission sound pressure level LpAf
at a distance d from the machine (sound
pressure level averaged on an energy basis
4 Machine classification
over a measurement surface at a distance d
from the sound source);
Machines shall be classified according to their appli-
cation. A standardized classification shall be used,
- other quantities laid down in International
when available.
Standards and regulations.
Machines shall be classified into families and groups,
c) Additional noise-emission information:
based on the following criterion:
emission sound pressure spectra (e.g. in oc-
- the various families and groups of machines shall
tave bands or one-third-octave bands) at
be defined precisely, so that it is possible to assign
selected measuring points;
a machine unambiguously to a single family and a
sound power spectra (e.g. in octave bands or
single group.
one-third-octave bands);
Woodworking machines
directivity index.
a) Machine families belonging to woodworking ma-
NOTE 3 Definitions of these quantities are given in the
chines, such as
IS0 3740 series, IS0 4871 and the IS0 11200 series.
- planing machines,
5.2 Measurement methods
- circular sawing machines,
Noise-emission data shall be determined using stan-
- moulding machines,
dardized measurement methods such as machine-
specific noise test codes or, if comparability can be
- bandsawing machines.
ensured by defining all relevant parameters, by using
basic noise-emission standards (e.g. the IS0 3740
b) Groups of circular sawing machines, such as
series, IS0 9614-1 and IS0 11200 series).
- circular saw benches,
The following additional information shall be provided
when applying the basic standards:
- circular sawing machines for building sites.
- the classification of the object being measured;
Sub-groups for different ranges of diameters, such
- the measurement method and its grade of accu-
- up to 350 mm,
- operating conditions under which noise-emission
- 350 mm to 500 mm. measurements have been carried out.
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SIST EN ISO 11689:1999
@ IS0
IS0 11689:1996(E)
If, however, a measuring procedure is laid down as
The arithmetic mean x of Iv individual values Li is

mandatory in national or international legal provisions given by the following equation:

then the measurements shall be carried out in accor-
dance with that procedure.
L ‘$Li
5.3 Representativeness of data
The arithmetic mean of the random individual values
may be presented together with the double standard
Representative noise -emi ssion data bas
are the
deviation, * 2spr0d or + 2st,t (for more information see
the description of the nois e-control p erformance.
IS0 4871, IS0 5725-l and IS0 7574-l), as deter-
mined from the production or total scatter. The presen-
The crucial factor for a balanced data stock is not the
tation of the standard deviation of each mean value
quantity, but the representativeness of the data.
(average of the same model of a given manufacturer)
Normally 100 % market coverage is not possible for a
is only-practicable if the number of different models of
group of machines, therefore, noise-emission data are
machine offered and recorded is not too great. The
considered as representative according to this Inter-
collection of mean values is especially suitable for
national Standard if at least 50 % of the manufacturers
machines produced in large numbers.
on the market and 50 % of models sold in the group
are covered. If this criterion cannot be fulfilled, a
NOTE 4 The standard deviation s characterizes the distri-
committee of the interested parties shall decide
bution of the values Li around the mean value. Approxi-
whether the data are to be regarded as representative.
mately 68 % of all measured values will lie between (z - S)
The market may be a national one, a market which
includes several countries, or an international market.
and(z+ s) and approximately 95 % between (z - 2s) and
The machines covered shall be offered on such a
s is calculated according to the following
(E, + 2s);
market at the time of the survey. The test shall be
carried out on a machine which is new and, if necess-
ary, run-in. If the data stock is not representative in
accordance with the requirements of this International
Standard, this fact shall be indicated clearly and the
percentage of the machines covered shall be stated.
During the collection of noise-emission data, the
parameters identifying the machine and its manufac-
6 Presentation of noise-emission values
turer, the period in which the emission values have
been determined, and all other elements which can be
61 . Noise-emission values shall be presented on the
useful for the comparison (e.g. the percentage of
basis of the machine classification. In particular, the
market coverage, technical means used to reduce
influence of the characteristic machine parameters
noise at the source, cost thereof, etc.) shall be re-
(e.g. power, speed, load, dimension) on noise
emission has to be established.
6.2 The presentation shall be given in tabular form
5.4 Types of noise-emission values
(machine data, noise-emission data) and/or graphs
(see annex C). A table shall contain noise-emission
The noise-emission values are the values of the
data, technical data and further characteristic data.
quantities specified in the specific noise test code (see
. .
5 2)
6.3 For the graphical presentation, the following
requirements shall be met.
5.4.1 Individual values for single machines
If the characteristic machine parameter has a
negligible influence on the noise emission, noise-
The individual values are obtained at a single ma-
emission data shall be presented in one or more of
chine. The collection of individual values is especially
the following forms:
suitable for individually manufactured machines and
for small series of machines.
I) to indicate the range in which all considered
noise-emission data lie, lines may be drawn
5.4.2 Mean values for batches of machines
parallel to the regression line through those
points which deviate the most from it;
The noise emission from each model of machine is
2) indication of the range within which all con-
represented by the arithmetic mean of the individual
sidered noise-emission values lie;
values of the machines in a batch.
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SIST EN ISO 11689:1999
@ IS0
IS0 11689:1996(E)
d smallest into sub-ranges in which a linear regression or any
indication of the rang e (greatest an
other applicable regression analysis can be carried out
well as the mean value;
values) as
(see figures B.1 and B.3).
4) indication of the mean value and + 2s.
emission va .lues shall be 6.5 Each table or graph of data shall be dated by the
The scatter of noise
year of collection of the data, and the reference to the
shown on appropriate h istog rams or diagrams.
noise test code used shall be given.
c) If, from the noise-emission data collected, a clear
dependence can be established between noise
emission values and one or more characteristic
7 Any other elements that might be useful for the evalua-
machine parameters, this shall be presented in the
tion of the data can be given
form of one or more noise-emission graphs (see

figure 1 and figures B.l to B.3). 8 If so agreed by the parties involved, names of machines

and manufacturers should be given. Otherwise, tables and
graphs should be anonymous.
5 The characteristic parameters retained should pref-
erably be chosen among those which result in a better
correlation (see annex A) and which are related to a
7 Evaluation of noise-emission data
criterion for the selection of the machine(s).
6 The characteristic machine parameter(s) can be
7.1 General
given in a noise test code or in the noise clause of a
safety standard.
For evaluating noise-emission data, use the L-lines.
red values a re avail-
If both declare d and measu
Supplementary information of noise-controlling design
able, they shall not be drawn on the same graph.
principles, noise-control measures, etc. may also be
6.4 The presentation of noise-emission data shall
contain at least the cluster of noise-emission values
If the noise-emission values for different models of a
with the calculated regression line (see annex A). If a
certain machine group are determined under fully
single linear regression line does not clearly indicate
comparable conditions, then, taking due account of the
the dependence of the noise-emission values on the
measurement uncertainty, the machine within this
characteristic machine parameter, the covered range
machine group with a lower emission value has a
of a characteristic machine parameter shall be divided
higher noise-control performance.
Regression line
=t r
iii L
Characteristic machine parameter

Figure 1 - Presentation of noise-emission values as a function of a characteristic

machine parameter
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SIST EN ISO 11689:1999
@ IS0 IS0 11689: 1996(E)
Generally, an effective evaluation of noise-emission
7.4 Low noise-emission values
data can be made by analysing it in graphical form
using two lines L1 and L2 parallel to the regression
Noise-emission values below L2 (see figure 2) are
line. For evaluation of the noise-emission data it is
normally indicative of those machines having a high

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