kSIST prEN ISO 10140-4:2016

SLOVENSKI STANDARD
oSIST prEN ISO 10140-4:2016
01-februar-2016
$NXVWLND/DERUDWRULMVNRPHUMHQMH]YRþQHL]ROLUQRVWLJUDGEHQLKHOHPHQWRYGHO
0HULOQLSRVWRSNLLQ]DKWHYH,62',6
Acoustics - Laboratory measurement of sound insulation of building elements - Part 4:
Measurement procedures and requirements (ISO/DIS 10140-4:2015)
Akustik - Messung der Schalldämmung von Bauteilen im Prüfstand - Teil 4:
Messverfahren und Anforderungen (ISO/DIS 10140-4:2015)
Acoustique - Mesurage en laboratoire de l'isolation acoustique des éléments de
construction - Partie 4: Exigences et modes opératoires de mesure (ISO/DIS 10140-
4:2015)
Ta slovenski standard je istoveten z: prEN ISO 10140-4
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
91.060.01 Stavbni elementi na splošno Elements of buildings in
general
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
oSIST prEN ISO 10140-4:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 10140-4:2016

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oSIST prEN ISO 10140-4:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10140-4
ISO/TC 43/SC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2015-12-03 2016-03-03
Acoustics — Laboratory measurement of sound insulation
of building elements —
Part 4:
Measurement procedures and requirements
Acoustique — Mesurage en laboratoire de l’isolation acoustique des éléments de construction —
Partie 4: Exigences et modes opératoires de mesure
ICS: 91.120.20
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 10140-4:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4:2015(E) ISO/DIS 10140-4

Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement procedures and requirements . 2
4.1 Frequency range . 2
4.2 Correction for background noise level . 4
4.3 Measurement of airborne sound insulation . 4
4.4 Measurement of impact sound insulation . 5
4.5 Measurement of reverberation time and evaluation of the equivalent sound absorption
area . 6
4.6 Measurement of structural reverberation time . 7
4.7 Measurement of radiated sound power by surface velocity of elements . 7
5 Sound insulation measurements . 8
5.1 General . 8
5.2 General procedure for the determination of airborne sound insulation . 8
5.3 General procedure for the determination of impact sound insulation of floors . 9
Annex A (mandatory)  Additional procedures for measurements at low frequencies . 10
A.1 General . 10
A.2 Minimum distances . 10
A.3 Sampling of the sound field . 10
A.4 Loudspeaker positions . 11
A.5 Averaging time . 12
A.6 Reverberation time . 12
A.7 Diffusion of the field . 12
Bibliography . 13


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© ISO 2015 – All rights reserved iii
ii © ISO 2015 – All rights reserved

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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement procedures and requirements . 2
4.1 Frequency range . 2
4.2 Correction for background noise level . 4
4.3 Measurement of airborne sound insulation . 4
4.4 Measurement of impact sound insulation . 5
4.5 Measurement of reverberation time and evaluation of the equivalent sound absorption
area . 6
4.6 Measurement of structural reverberation time . 7
4.7 Measurement of radiated sound power by surface velocity of elements . 7
5 Sound insulation measurements . 8
5.1 General . 8
5.2 General procedure for the determination of airborne sound insulation . 8
5.3 General procedure for the determination of impact sound insulation of floors . 9
Annex A (mandatory)  Additional procedures for measurements at low frequencies . 10
A.1 General . 10
A.2 Minimum distances . 10
A.3 Sampling of the sound field . 10
A.4 Loudspeaker positions . 11
A.5 Averaging time . 12
A.6 Reverberation time . 12
A.7 Diffusion of the field . 12
Bibliography . 13


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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 10140-4 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building
acoustics.
This second edition of ISO 10140-4 cancels and replaces ISO 10140-4:2010, which has been technically
revised.
ISO 10140 consists of the following parts, under the general title Acoustics — Laboratory measurement of
sound insulation of building elements:
 Part 1: Application rules for specific products
 Part 2: Measurement of airborne sound insulation
 Part 3: Measurement of impact sound insulation
 Part 4: Measurement procedures and requirements
 Part 5: Requirements for test facilities and equipment
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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
Introduction
ISO 10140 (all parts) concerns laboratory measurement of the sound insulation of building elements (see
Table 1).
ISO 10140-1 specifies the application rules for specific elements and products, including specific
requirements for preparation, mounting, operating and test conditions. ISO 10140-2 and ISO 10140-3
contain the general procedures for airborne and impact sound insulation measurements, respectively, and
refer to this part of ISO 10140 and ISO 10140-5 where appropriate. For elements and products without a
specific application rule described in ISO 10140-1, it is possible to apply ISO 10140-2 and ISO 10140-3. This
part of ISO 10140 contains basic measurement techniques and processes. ISO 10140-5 contains
requirements for test facilities and equipment. For the structure of ISO 10140 (all parts), see Table 1.
ISO 10140 (all parts) was created to improve the layout for laboratory measurements, ensure consistency
and simplify future changes and additions regarding mounting conditions of test elements in laboratory and
field measurements. It is intended for ISO 10140 (all parts) to present a well-written and arranged format
for laboratory measurements.

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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
Table 1 — Structure and contents of ISO 10140 (all parts)
Relevant part Main purpose, contents and use Detailed content
of ISO 10140
ISO 10140-1 It indicates the appropriate test procedure for Appropriate references to ISO 10140-2 and
elements and products. For certain types of ISO 10140-3 and product-related, specific and
element/product, it can contain additional and additional instructions on:
more specific instructions about quantities and
 specific quantities measured;
test element size and about preparation,
 size of test element;
mounting and operating conditions. Where no
 boundary and mounting conditions;
specific details are included, the general
 conditioning, testing and operating conditions;
guidelines are according to ISO 10140-2 and
 additional specifics for test report.
ISO 10140-3.
ISO 10140-2 It gives a complete procedure for airborne  Definitions of main quantities measured
sound insulation measurements according to
 General mounting and boundary conditions
ISO 10140-4 and ISO 10140-5. For products
 General measurement procedure
without specific application rules, it is
 Data processing
sufficiently complete and general for the
 Test report (general points)
execution of measurements. However, for
products with specific application rules,
measurements are carried out according to
ISO 10140-1, if available.
ISO 10140-3 It gives a complete procedure for impact sound  Definitions of main quantities to measured
insulation measurements according to
 General mounting and boundary conditions
ISO 10140-4 and ISO 10140-5. For products
 General measurement procedure
without specific application rules, it is
 Data processing
sufficiently complete and general for the
 Test report (general points)
execution of measurements. However, for
products with specific application rules,
measurements are carried out according to
ISO 10140-1, if available.
ISO 10140-4 It gives all the basic measurement techniques  Definitions
and processes for measurement according to
 Frequency range
ISO 10140-2 and ISO 10140-3 or facility
 Microphone positions
qualifications according to ISO 10140-5. Much of
 SPL measurements
the content is implemented in software.
 Averaging, space and time
 Correction for background noise
 Reverberation time measurements
 Loss factor measurements
 Low-frequency measurements
 Radiated sound power by velocity
measurement
ISO 10140-5 It specifies all information needed to design, Test facilities, design criteria:
construct and qualify the laboratory facility, its
 volumes, dimensions;
additional accessories and measurement
 flanking transmission;
equipment (hardware).
 laboratory loss factor;
 maximum achievable sound reduction index;
 reverberation time;
 influence of lack of diffusivity in the
laboratory.
Test openings:
 standard openings for walls and floors;
 other openings (windows, doors, small
technical elements);
 filler walls in general.
Requirements for equipment:
 loudspeakers, number, positions;
 tapping machine and other impact sources;
 measurement equipment.
Reference constructions:
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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
 basic elements for airborne and impact
insulation improvement;
 corresponding reference performance curves.
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oSIST prEN ISO 10140-4:2016

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oSIST prEN ISO 10140-4:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-4

Acoustics — Laboratory measurement of sound insulation of
building elements — Part 4: Measurement procedures and
requirements
1 Scope
This part of ISO 10140 specifies the basic measurement procedures for airborne and impact sound
insulation in laboratory test facilities.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 3382-2, Acoustics — Measurement of room acoustic parameters — Part 2: Reverberation time in ordinary
rooms
ISO 10140-1:2010, Acoustics — Laboratory measurement of sound insulation of building elements — Part 1:
Application rules for specific products
ISO 10140-2, Acoustics — Laboratory measurement of sound insulation of building elements — Part 2:
Measurement of airborne sound insulation
ISO 10140-3, Acoustics — Laboratory measurement of sound insulation of building elements — Part 3:
Measurement of impact sound insulation
ISO 10140-5:2010, Acoustics — Laboratory measurement of sound insulation of building elements — Part 5:
Requirements for test facilities and equipment
ISO 10848-1:2006, Acoustics — Laboratory measurement of the flanking transmission of airborne and impact
sound between adjoining rooms — Part 1: Frame document
ISO 18233, Acoustics — Application of new measurement methods in building and room acoustics
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
energy average sound pressure level in a room
L
ten times the common logarithm of the ratio of the space and time average of the squared sound pressure to
the square of the reference sound pressure, the space average being taken over the entire room with the
exception of those parts where the direct radiation of a sound source or the near field of the boundaries
(walls, etc.) is of significant influence
Note 1 to entry: L is expressed in decibels.
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oSIST prEN ISO 10140-4:2016
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3.2
reverberation time
T
time required for the sound pressure level in a room to decrease by 60 dB after the sound source has
stopped
Note 1 to entry: The reverberation time is expressed in seconds.
Note 2 to entry: The range evaluated is defined by the times at which the decay curve first reaches 5 dB and 25 dB,
respectively, below the initial level.
3.3
structural reverberation time
T
s
time required for the acceleration level in a structure to decrease by 60 dB after the structure-borne sound
source has stopped
Note 1 to entry: The structural reverberation time is expressed in seconds.
Note 2 to entry: T is calculated using linear extrapolation of much shorter evaluation ranges than 60 dB, preferably
s
15 dB or 20 dB.
3.4
background noise level
measured sound pressure level in the receiving room from all sources other than the loudspeaker or tapping
machine in the source room.
3.5
continuously moving microphone
microphone that, with respect to a fixed point,
a) moves with approximately constant speed in a circle, or
b) sweeps to and fro along the arc of a circle, which is as large as possible, but is not be less than 270°, over
a fixed time period
4 Measurement procedures and requirements
4.1 Frequency range
All quantities shall be measured using one-third octave band filters having at least the following centre
frequencies, in hertz:
100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1 000, 1 250, 1 600, 2 000, 2 500, 3 150, 4 000, 5 000
If additional information in the low-frequency range is required, use one-third octave band filters with the
following centre frequencies, in hertz:
50, 63, 80
For measurements including low frequencies (i.e. starting at third octave band 50 Hz), additional criteria
from Annex A shall be used. In case of differences between standard measurements (starting at third octave
band 100 Hz) and those following Annex A additional criteria, the measurements performed using Annex A
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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
are assumed to be more reliable over the complete frequency range (50 Hz to 5000 Hz third octave bands).
Measurement of sound pressure levels
4.1.1 General
Obtain the energy average sound pressure level using a single microphone moved from position to position,
an array of fixed microphones or a continuously moving microphone.
4.1.2 Minimum separation distances for microphone positions
The following separation distances are minimum values and shall be exceeded where possible:
a) 0,7 m between fixed microphone positions;
b) 0,7 m between any microphone position and the room boundaries;
c) 0,7 m between any microphone position and any diffusers;
d) 1,0 m between any microphone position and the test element;
e) 1,0 m between any microphone position and the sound source.
If you use fixed microphone positions, they shall not be concentrated in the center of the room (in a centred
volume of 1 m × 1 m × 1 m in the room). This constraint is assumed to be achieved with a continuously
moving microphone using rotating arm.
4.1.3 Averaging times
4.1.3.1 Fixed microphone positions
At each individual microphone position, the averaging time shall be at least 6 s for each frequency band, with
centre frequencies in the frequency range of 100 Hz to 400 Hz. For bands of higher frequencies, it is
permissible to decrease the time to not less than 4 s.
4.1.3.2 Continuously moving microphone
The averaging time shall cover a whole number of traverses and shall not be less than 30 s. Using a moving
loudspeaker, the measurement period shall equal the time of movement of the loudspeaker which shall be at
least 30 s.
4.1.4 Energy average sound pressure level
4.1.4.1 Fixed microphone positions
The energy average sound pressure level is determined using Equation (1).
2 2 2
𝑝 +𝑝 +.+𝑝
𝑛
1 2
𝐿 = 10lg (1)
2
𝑛𝑝
0
where p , p , ., p are root-mean-square (r.m.s.) sound pressures at n different positions in the room and p
1 2 n 0
is the reference sound pressure and is equal to 20 μPa.
In practice, the sound pressure levels are usually measured and the energy average level, L, shall be
determined using Equation (2).
1 𝑛
𝐿⁄10
𝑗
𝐿 = 10lg � 10 (2)
𝑗=1
𝑛
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oSIST prEN ISO 10140-4:2016
ISO/DIS 10140-4
where L , L , ., L are the sound pressure levels at n different positions in the room.
1 2 n
4.1.4.2 Continuously moving microphone
The energy average sound pressure level is determined using Equation (3).
1  𝑇
𝑚
2
( )
∫ 𝑝 𝑡𝑑𝑡
 0
𝑇
𝑚
𝐿 = 10lg (3)
2
𝑝
0
where
p is the sound pressure at the moment t, in pascals;
p is the reference sound pressure and is equal to 20 µPa;
0
T is the integration time, in seconds.
m
4.2 Correction for background noise level
Measurements of background noise levels shall be made to ensure that the observations in the receiving
room are not affected by the background noise. Extraneous sound, such as noise from outside the test room,
electrical noise in the receiving system or electrical cross-talk between the source and the receiving systems
all contribute to the background noise level. The background noise level shall be at least 6 dB (and
preferably more than 15 dB) below the level of signal and background noise combined at each frequency
band.
If the difference in levels is smaller than 15 dB but greater than 6 dB, calculate corrections to the signal level
according to Equation (4):
⁄ ⁄
𝐿 10 𝐿 10
sb b
𝐿 = 10lg(10 −10 ) (4)
where
L is the adjusted signal level, in decibels;
L is the level of signal and background noise combined, in decibels;
sb
L is the background noise level, in decibels.
b
If the difference in levels is less than or equal to 6 dB in any of the frequency bands, L will be equal to L
sb
minus 1,3 dB. For each frequency band where this is the case, it shall be clearly indicated in the report that a
1,3 dB correction has been made and these values are the limit of measurement.
To check the electrical noise in the receiving system or electrical cross-talk between the source and the
receiving systems, replace the microphone by a dummy microphone or replace the loudspeaker by an
equivalent impedance.
4.3 Measurement of airborne sound insulation
4.3.1 General
Sound shall be generated in the source room using loudspeakers in at least two positions or a single
loudspeaker moved to at least two positions or a moving loudspeaker. The qualification procedure for
loudspeakers and loudspeaker positions is given in ISO 10140-5:2010, Annex D. The sound pressure level
shall be measured using microphones in fixed positions or a moving microphone.
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4.3.2 Measurements with fixed microphone positions
a) When using more than one loudspeaker at the same time or a moving loudspeaker, a minimum of five
microphone positions shall be used in each room. These shall be distributed within the maximum
permitted space throughout each room. No two microphone positions shall lie in the same plane relative
to the room boundaries.
b) When using a single loudspeaker, a minimum of five microphone positions shall be used in each room
for each loudspeaker position (additional sets of microphone positions may be different from the first
set of positions). Each set of microphone positions shall be distributed within the maximum permitted
space throughout each room. No two microphone positions shall lie in the same plane relative to the
room boundaries and the positions shall not be in a regular grid.
4.3.3 Measurements with a continuously moving microphone
a) When using more than one loudspeaker at the same time or a moving loudspeaker, at least one
measurement with a continuously moving microphone shall be used. The sweep radius shall be
...