oSIST prEN ISO 10140-4:2020

Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements (ISO/DIS 10140-4:2020)

Akustik - Messung der Schalldämmung von Bauteilen im Prüfstand - Teil 4: Messverfahren und Anforderungen (ISO/DIS 10140-4:2020)

Dieses Dokument legt die grundlegenden Verfahren zur Messung der Luftschall- und Trittschalldämmung von Bauteilen in Laborprüfständen fest.

Acoustique - Mesurage en laboratoire de l'isolation acoustique des éléments de construction - Partie 4: Exigences et modes opératoires de mesurage (ISO/DIS 10140-4:2020)

Akustika - Laboratorijsko merjenje zvočne izolirnosti gradbenih elementov - 4. del: Merilni postopki in zahteve (ISO/DIS 10140-4:2020)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 10140-4:2020
01-september-2020

Akustika - Laboratorijsko merjenje zvočne izolirnosti gradbenih elementov - 4. del:

Merilni postopki in zahteve (ISO/DIS 10140-4:2020)

Acoustics - Laboratory measurement of sound insulation of building elements - Part 4:

Measurement procedures and requirements (ISO/DIS 10140-4:2020)
Akustik - Messung der Schalldämmung von Bauteilen im Prüfstand - Teil 4:
Messverfahren und Anforderungen (ISO/DIS 10140-4:2020)
Acoustique - Mesurage en laboratoire de l'isolation acoustique des éléments de

construction - Partie 4: Exigences et modes opératoires de mesurage (ISO/DIS 10140-

4:2020)
Ta slovenski standard je istoveten z: prEN ISO 10140-4
ICS:
17.140.01 Akustična merjenja in Acoustic measurements and
blaženje hrupa na splošno noise abatement in general
91.060.01 Stavbni elementi na splošno Elements of buildings in
general
91.120.20 Akustika v stavbah. Zvočna Acoustics in building. Sound
izolacija insulation
oSIST prEN ISO 10140-4:2020 en,fr,de

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

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oSIST prEN ISO 10140-4:2020
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oSIST prEN ISO 10140-4:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10140-4
ISO/TC 43/SC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2020-06-19 2020-09-11
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
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
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 10140-4:2020(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 2020
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(E)
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 Measurement of sound pressure levels ............................................................................................................................. 3

4.2.1 General...................................................................................................................................................................................... 3

4.2.2 Minimum separation distances for microphone positions ......................................................... 3

4.2.3 Averaging times ................................................................................................................................................................ 3

4.2.4 Energy average sound pressure level ............................................................................................................ 3

4.3 Correction for background noise level ............................................................................................................................... 4

4.4 Measurement of airborne sound insulation .................................................................................................................. 4

4.4.1 General...................................................................................................................................................................................... 4

4.4.2 Measurements with fixed microphone positions ................................................................................ 5

4.4.3 Measurements with a continuously moving microphone ............................................................ 5

4.5 Measurement of impact sound insulation ....................................................................................................................... 5

4.5.1 General...................................................................................................................................................................................... 5

4.5.2 Measurements with fixed microphone positions ................................................................................ 5

4.5.3 Continuously moving microphone ................................................................................................................... 5

4.6 Measurement of reverberation time and evaluation of the equivalent sound

absorption area ...................................................................................................................................................................................... 6

4.6.1 General...................................................................................................................................................................................... 6

4.6.2 Measurement of reverberation time ............................................................................................................... 6

4.6.3 Equivalent sound absorption area.................................................................................................................... 6

4.7 Measurement of structural reverberation time .......................................................................................................... 7

4.8 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

5.2.1 General...................................................................................................................................................................................... 8

5.2.2 Fixed microphone positions and multiple loudspeakers operating

simultaneously or a moving loudspeaker .................................................................................................. 8

5.2.3 Fixed microphone positions and a single loudspeaker operated at more

than one position ............................................................................................................................................................. 8

5.2.4 Continuously moving microphone and multiple loudspeakers operating

simultaneously or a moving loudspeaker .................................................................................................. 9

5.2.5 Continuously moving microphone and a single loudspeaker operated at

more than one position .............................................................................................................................................. 9

5.3 General procedure for the determination of impact sound insulation of floors ............................ 9

5.3.1 General...................................................................................................................................................................................... 9

5.3.2 Fixed microphone position ..................................................................................................................................... 9

5.3.3 Continuously moving microphone ................................................................................................................... 9

Annex A (informative) Additional procedures for measurements at low frequencies .................................10

Bibliography .............................................................................................................................................................................................................................12

© ISO 2020 – All rights reserved iii
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(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: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building

acoustics.

This second edition cancels and replaces the first edition (ISO 10140-4:2010), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— normative references updated
— terms and definitions updated
— all references updated
— first and last paragraph of 4.8 edited
— title of 5.3.1 added
— note in 5.3.3 edited
A list of all parts in the ISO 10140 series can be found on the ISO website.

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 2020 – All rights reserved
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(E)
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.
It is intended to update ISO 10140-1 with application rules for other products.
Table 1 — Structure and contents of ISO 10140 (all parts)
Relevant Main purpose, contents and use Detailed content
part of
ISO 10140

ISO 10140-1 It indicates the appropriate test procedure Appropriate references to ISO 10140-2 and

for elements and products. For certain types ISO 10140-3 and product-related, specific and

of element/product, it can contain addi- additional instructions on:
tional and more specific instructions about
— specific quantities measured;
quantities and test element size and about
preparation, mounting and operating condi-
— size of test element;
tions. Where no specific details are includ-
— boundary and mounting conditions;
ed, the general guidelines are according to
ISO 10140-2 and ISO 10140-3.
— conditioning, testing and operating condi-
tions;
— additional specifics for test report.

ISO 10140-2 It gives a complete procedure for airborne — Definitions of main quantities measured

sound insulation measurements accord-
— General mounting and boundary conditions
ing to ISO 10140-4 and ISO 10140-5. For
products without specific application rules, — General measurement procedure
it is sufficiently complete and general for
— Data processing
the execution of measurements. However,
for products with specific application rules,
— Test report (general points)
measurements are carried out according to
ISO 10140-1, if available.

ISO 10140-3 It gives a complete procedure for impact — Definitions of main quantities measured

sound insulation measurements accord-
— General mounting and boundary conditions
ing to ISO 10140-4 and ISO 10140-5. For
products without specific application rules,
— General measurement procedure
it is sufficiently complete and general for
— Data processing
the execution of measurements. However,
for products with specific application rules,
— Test report (general points)
measurements are carried out according to
ISO 10140-1, if available.
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(E)
Table 1 (continued)
Relevant Main purpose, contents and use Detailed content
part of
ISO 10140
ISO 10140-4 It gives all the basic measurement techniques — Definitions
and processes for measurement according
— Frequency range
to ISO 10140-2 and ISO 10140-3 or facility
qualifications according to ISO 10140-5. Much
— Microphone positions
of the content is implemented in software.
— SPL measurements
— Averaging, space and time
— Correction for background noise
— Reverberation time measurements
— Loss factor measurements
— Low-frequency measurements
— Radiated sound power by velocity measure-
ment

ISO 10140-5 It specifies all information needed to design, Test facilities, design criteria:

construct and qualify the laboratory facility,
— volumes, dimensions;
its additional accessories and measurement
equipment (hardware). — flanking transmission;
— laboratory loss factor;
— maximum achievable sound reduction index;
— reverberation time;
— influence of lack of diffusivity in the labora-
tory.
Test openings:
— standard openings for walls and floors;
— other openings (windows, doors, small tech-
nical elements);
— filler walls in general.
Requirements for equipment:
— loudspeakers, number, positions;
— tapping machine and other impact sources;
— measurement equipment.
Reference constructions:
— basic elements for airborne and impact
insulation improvement;
— corresponding reference performance
curves.
vi © ISO 2020 – All rights reserved
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oSIST prEN ISO 10140-4:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-4:2020(E)
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 documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. 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/DIS 10140-1:2020, 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/DIS 10140-5:2020, Acoustics — Laboratory measurement of sound insulation of building elements —

Part 5: Requirements for test facilities and equipment

ISO 10848-1:2017, Acoustics — Laboratory and field measurement of flanking transmission for airborne,

impact and building service equipment 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.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
© ISO 2020 – All rights reserved 1
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oSIST prEN ISO 10140-4:2020
ISO/DIS 10140-4:2020(E)
3.1
energy average sound pressure level in a room

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.
3.2
reverberation time

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

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 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 to 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 additional measurements at low frequencies, guidance is given in Annex A.
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oSIST prEN ISO 10140-4:2020
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4.2 Measurement of sound pressure levels
4.2.1 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.
4.2.2 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.
4.2.3 Averaging times
4.2.3.1 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.
4.2.3.2 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.
4.2.4 Energy average sound pressure level
4.2.4.1 Fixed microphone positions
The energy average sound pressure level is determined using Equation (1).
2 22
pp++...+p
1 2 n
L=10lg (1)
where

p , p , ..., p are root-mean-square (r.m.s.) sound pressures at n different positions in the room.

1 2 n

In practice, the sound pressure levels are usually measured and the energy average level, L, shall be

determined using Equation (2).
1 L /10
L=10lg 10 (2)
j=1
where

L , L , ..., L are the sound pressure levels at n different positions in the room.

1 2 n
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oSIST prEN ISO 10140-4:2020
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4.2.4.2 Continuously moving microphone
The energy average sound pressure level is determined using Equation (3).
pt dt
L =10lg (3)
where
p is the sound pressure, in pascals;
p is the reference sound pressure and is equal to 20 µPa;
T is the integration time, in seconds.
4.3 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):
LL//10 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;
L is the background noise level, in decibels.

If the difference in levels is less than or equal to 6 dB in any of the frequency bands, use the 1,3 dB

correction. 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.
4.4 Measurement of airborne sound insulation
4.4.1 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/DIS 10140-5:2020, Annex D. The sound pressure

level shall be measured using microphones in fixed positions or a moving microphone.

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4.4.2 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.

4.4.3 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

at least 1 m. The plane of the traverse shall be inclined in order to cover a large proportion of the

permitted room space and shall not lie in any plane that is less than 10° to any room surface (wall,

floor or ceiling). The duration of a traverse period shall be not less than 15 s.

b) When using a single loudspeaker, a minimum of one measurement using a continuously moving

microphone shall be used for each loudspeaker position. The sweep radius shall be at least 1 m. The

plane of the traverse shall be inclined to cover a large proportion of the permitted room space and

shall not lie in any plane that is less than 10° to a room surface (wall, floor or ceiling). The duration

of a traverse period shall be not less than 15 s.

The location of the fixed point about which the continuously moving microphone moves may be changed

for each loudspeaker position. The same number of measurements shall be taken at each location.

4.5 Measurement of impact sound insulation
4.5.1 General

Sound shall be generated using the standard tapping machine. Requirements for the tapping machine

are specified in ISO/DIS 10140-5:2020, Annex E. Not less than four tapping machine positions shall be

used for any measurement.
4.5.2 Measurements with fixed microphone positions
The number of microphone positions shall equal the number of tappin
...