Acoustics - Laboratory measurement of sound insulation of building elements - Part 2: Measurement of airborne sound insulation (ISO 10140-2:2010)

This part of ISO 10140 specifies a laboratory method for measuring the airborne sound insulation of building products, such as walls, floors, doors, windows, shutters, fa?ade elements, fa?ades, glazing, small technical elements, for instance transfer air devices, airing panels (ventilation panels), outdoor air intakes, electrical raceways, transit sealing systems and combinations, for example walls or floors with linings, suspended ceilings or floating floors. The test results can be used to compare the sound insulation properties of building elements, classify elements according to their sound insulation capabilities, help design building products which require certain acoustic properties and estimate the in situ performance in complete buildings. The measurements are performed in laboratory test facilities in which sound transmission via flanking paths is suppressed. The results of measurements made in accordance with this part of ISO 10140 are not applicable directly to the field situation without accounting for other factors affecting sound insulation, such as flanking transmission, boundary conditions and total loss factor.

Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 2: Messung der Luftschalldämmung (ISO 10140-2:2010)

Dieses Dokument legt ein Verfahren zur Messung der Luftschalldämmung von Gebäudeteilen wie Wänden,
Decken, Türen, Fenstern, Abschlüssen, Fassadenelementen, Fassaden, Verglasungen, kleinen technischen
Bauteilen wie Luftdurchlässen, Lüftungspanelen, Außenlufteintritten, Kabelkanälen, Abdichtungssystemen an
Übergängen und Kombinationen wie Wänden oder Decken mit Vorsatzschalen, abgehängten Decken oder
schwimmendem Estrich fest.
Die Prüfergebnisse können genutzt werden, um die Schalldämmeigenschaften von Gebäudeteilen zu
vergleichen, Gebäudeteile nach ihrer Schalldämmfähigkeit zu klassifizieren, die Konstruktion von
Bauprodukten zu unterstützen, die bestimmte akustische Eigenschaften aufweisen müssen, und die Leistung
im eingebauten Zustand im vollständigen Gebäude abzuschätzen.
Die Messungen werden in Prüfständen durchgeführt, in denen eine Schallübertragung über Flankenwege
unterdrückt wird. Die Ergebnisse der nach diesem Dokument durchgeführten Messungen dürfen nicht direkt
auf die Situation in der Praxis angewendet werden, ohne dass andere Faktoren wie Flankenübertragung,
Randbedingungen und Gesamtverlustfaktor, die die Schalldämmung beeinflussen können, berücksichtigt
werden.

Acoustique - Détermination de l'isolation acoustique des éléments de construction - Partie 2: Mesurage de l'isolation des bruits aériens (ISO 10140-2:2010)

L'ISO 10140-2:2010 spécifie une méthode de mesurage en laboratoire de l'isolation au bruit aérien des produits de construction tels que les murs, planchers, portes, fenêtres, fermetures, éléments de façade, façades, vitrage, petits éléments techniques, par exemple les dispositifs de transfert d'air, bouches d'aération (bouches de ventilation), entrées d'air extérieures, conduits électriques, systèmes d'étanchéité de passage, et des combinaisons, par exemple les murs ou planchers avec revêtements, les plafonds suspendus ou les planchers flottants.

Akustika - Laboratorijsko merjenje zvočne izolirnosti gradbenih elementov - 2. del: Merjenje izolirnosti pred zvokom v zraku (ISO 10140-2:2010)

Ta del ISO 10140 določa laboratorijsko metodo za merjenje izolirnosti gradbenih izdelkov, kot so stene, tla, vrata, okna, roloji, fasadni elementi, zasteklitve, majhni tehnični elementi, na primer naprave za prenos zvoka, prezračevalni paneli (ventilacijske paneli), zunanji dovodi zraka, električni kanali, prehodni tesnilni sistemi in kombinacije, na primer stene in tla z oblogami, obešeni stropovi ali plavajoči podi, pred zvokom v zraku. Rezultati preskusov se lahko uporabijo za primerjavo lastnosti izolirnosti gradbenih elementov pred zvokom in za klasifikacijo elementov v skladu z njihovimi zmožnostmi izolirnosti zvoka, pomagajo pri snovanju gradbenih izdelkov, ki zahtevajo določene akustične značilnosti, in pri ocenjevanju in situ zmogljivosti v dokončanih zgradbah. Ukrepi se izvedejo v laboratorijskih preskusnih objektih, v katerih je bočni prenos zvoka zadušen. Rezulatati merjenj, izvedenih v skladu s tem delom ISO 10140, ne veljajo neposredno za situacijo na terenu, brez upoštevanih drugih dejavnikov, ki vplivajo na zvočno izolirnost, kot so bočni prenos, mejni pogoji in dejavnik skupne izgube.

General Information

Status
Withdrawn
Public Enquiry End Date
14-Feb-2009
Publication Date
15-Nov-2010
Withdrawal Date
13-Jun-2021
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
14-Jun-2021
Due Date
07-Jul-2021
Completion Date
14-Jun-2021

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SLOVENSKI STANDARD
SIST EN ISO 10140-2:2010
01-december-2010
1DGRPHãþD
SIST EN 20140-10:1997
SIST EN ISO 140-1:1998
SIST EN ISO 140-1:1998/A1:2005
SIST EN ISO 140-11:2005
SIST EN ISO 140-16:2006
SIST EN ISO 140-3:1997
SIST EN ISO 140-8:1998

$NXVWLND/DERUDWRULMVNRPHUMHQMH]YRþQHL]ROLUQRVWLJUDGEHQLKHOHPHQWRYGHO

0HUMHQMHL]ROLUQRVWLSUHG]YRNRPY]UDNX ,62

Acoustics - Laboratory measurement of sound insulation of building elements - Part 2:

Measurement of airborne sound insulation (ISO 10140-2:2010)
Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 2:
Messung der Luftschalldämmung (ISO 10140-2:2010)

Acoustique - Détermination de l'isolation acoustique des éléments de construction -

Partie 2: Mesurage de l'isolation des bruits aériens (ISO 10140-2:2010)
Ta slovenski standard je istoveten z: EN ISO 10140-2:2010
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
SIST EN ISO 10140-2:2010 en

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

---------------------- Page: 1 ----------------------
SIST EN ISO 10140-2:2010
---------------------- Page: 2 ----------------------
SIST EN ISO 10140-2:2010
EUROPEAN STANDARD
EN ISO 10140-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2010
ICS 91.120.20 Supersedes EN 20140-10:1992, EN ISO 140-1:1997, EN
ISO 140-11:2005, EN ISO 140-16:2006, EN ISO 140-
3:1995, EN ISO 140-6:1998, EN ISO 140-8:1997
English Version
Acoustics - Laboratory measurement of sound insulation of
building elements - Part 2: Measurement of airborne sound
insulation (ISO 10140-2:2010)

Acoustique - Mesurage en laboratoire de l'isolation Akustik - Messung der Schalldämmung von Gebäudeteilen

acoustique des éléments de construction - Partie 2:
im Prüfstand - Teil 2: Messung der Luftschalldämmung
Mesurage de l'isolation au bruit aérien (ISO 10140-2:2010) (ISO 10140-2:2008)
This European Standard was approved by CEN on 14 August 2010.

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, Croatia, 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

© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10140-2:2010: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 10140-2:2010
EN ISO 10140-2:2010 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 10140-2:2010
EN ISO 10140-2:2010 (E)
Foreword

This document (EN ISO 10140-2:2010) has been prepared by Technical Committee ISO/TC 43 "Acoustics" in

collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building elements and of

buildings” the secretariat of which is held by AFNOR.

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 March 2011, and conflicting national standards shall be withdrawn at

the latest by March 2011.

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 20140-10:1992, EN ISO 140-6:1998, EN ISO 140-11:2005,

EN ISO 140-8:1997, EN ISO 140-1:1997, EN ISO 140-16:2006, EN ISO 140-3:1995.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, 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 10140-2:2010 has been approved by CEN as a EN ISO 10140-2:2010 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 10140-2:2010
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SIST EN ISO 10140-2:2010
INTERNATIONAL ISO
STANDARD 10140-2
First edition
2010-09-01
Acoustics — Laboratory measurement of
sound insulation of building elements —
Part 2:
Measurement of airborne sound
insulation
Acoustique — Mesurage en laboratoire de l'isolation acoustique des
éléments de construction —
Partie 2: Mesurage de l'isolation au bruit aérien
Reference number
ISO 10140-2:2010(E)
ISO 2010
---------------------- Page: 7 ----------------------
SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
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Published in Switzerland
ii © ISO 2010 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
Contents Page

Foreword ............................................................................................................................................................iv

Introduction.........................................................................................................................................................v

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

2 Normative references............................................................................................................................1

3 Terms and definitions ...........................................................................................................................2

4 Facilities and equipment.......................................................................................................................3

5 Test procedure and evaluation ............................................................................................................3

6 Test arrangement ..................................................................................................................................5

7 Limits of performance...........................................................................................................................7

8 Precision.................................................................................................................................................8

9 Test report..............................................................................................................................................8

Annex A (normative) Measurement of sound transmission through the filler wall and any flanking

construction for small-sized or reduced-size test openings ............................................................9

Annex B (informative) Form for the expression of results ...........................................................................11

Bibliography......................................................................................................................................................13

© ISO 2010 – All rights reserved iii
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(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.

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 10140-2 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building

acoustics.

This first edition of ISO 10140-2, together with ISO 10140-1, ISO 10140-3, ISO 10140-4 and ISO 10140-5,

cancels and replaces ISO 140-1:1997, ISO 140-3:1995, ISO 140-6:1998, ISO 140-8:1997, ISO 140-10:1991,

ISO 140-11:2005 and ISO 140-16:2006, which have been technically revised.

It also incorporates the Amendments ISO 140-1:1997/Amd.1:2004 and ISO 140-3:1995/Amd.1:2004.

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
iv © ISO 2010 – All rights reserved
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(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. This part of ISO 10140 and ISO 10140-3 contain the

general procedures for airborne and impact sound insulation measurements, respectively, and refer to

ISO 10140-4 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 this part of ISO 10140 and ISO 10140-3. ISO 10140-4

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. It is also intended to incorporate

ISO 140-18 into ISO 10140 (all parts).
© ISO 2010 – All rights reserved v
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
Table 1 — Structure and contents of ISO 10140 (all parts)
Relevant part Main purpose, contents and use Detailed content
of ISO 10140
It indicates the appropriate test procedure for
ISO 10140-1 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.
It gives a complete procedure for airborne sound
ISO 10140-2
⎯ Definitions of main quantities 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 sufficiently
⎯ Data processing
complete and general for the execution of
⎯ Test report (general points)
measurements. However, for products with
specific application rules, measurements are
carried out according to ISO 10140-1, if available.
It gives a complete procedure for impact sound
ISO 10140-3 ⎯ Definitions of main quantities 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 sufficiently
⎯ Data processing
complete and general for the execution of
⎯ Test report (general points)
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:
⎯ basic elements for airborne and impact
insulation improvement;
⎯ corresponding reference performance curves.
vi © ISO 2010 – All rights reserved
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SIST EN ISO 10140-2:2010
INTERNATIONAL STANDARD ISO 10140-2:2010(E)
Acoustics — Laboratory measurement of sound insulation of
building elements —
Part 2:
Measurement of airborne sound insulation
1 Scope

This part of ISO 10140 specifies a laboratory method for measuring the airborne sound insulation of building

products, such as walls, floors, doors, windows, shutters, façade elements, façades, glazing, small technical

elements, for instance transfer air devices, airing panels (ventilation panels), outdoor air intakes, electrical

raceways, transit sealing systems and combinations, for example walls or floors with linings, suspended

ceilings or floating floors.

The test results can be used to compare the sound insulation properties of building elements, classify

elements according to their sound insulation capabilities, help design building products which require certain

acoustic properties and estimate the in situ performance in complete buildings.

The measurements are performed in laboratory test facilities in which sound transmission via flanking paths is

suppressed. The results of measurements made in accordance with this part of ISO 10140 are not applicable

directly to the field situation without accounting for other factors affecting sound insulation, such as flanking

transmission, boundary conditions and total loss factor.
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 140-2, Acoustics — Measurement of sound insulation in buildings and of building elements — Part 2:

Determination, verification and application of precision data

ISO 717-1, Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne

sound insulation

ISO 10140-1, Acoustics — Laboratory measurement of sound insulation of building elements — Part 1:

Application rules for specific products

ISO 10140-4, Acoustics — Laboratory measurement of sound insulation of building elements — Part 4:

Measurement procedures and requirements

ISO 10140-5, Acoustics — Laboratory measurement of sound insulation of building elements — Part 5:

Requirements for test facilities and equipment
© ISO 2010 – All rights reserved 1
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
sound reduction index

ten times the common logarithm of the ratio of the sound power, W , that is incident on the test element to the

sound power, W , radiated by the test element to the other side
R = 10 lg (1)
NOTE 1 R is expressed in decibels.

For laboratory measurements using sound pressure, the sound reduction index is calculated using:

RL=−L+10lg (2)
where
L is the energy average sound pressure level in the source room, in decibels;
L is the energy average sound pressure level in the receiving room, in decibels;

S is the area of the free test opening in which the test element is installed, in square metres;

A is the equivalent sound absorption area in the receiving room, in square metres.

NOTE 2 The derivation of Equation (2) from Equation (1) assumes that the sound fields are diffuse and that the only

sound radiated into the receiving room is from the test element.

NOTE 3 The expression “sound transmission loss” (TL) is also in use in English-speaking countries. It is equivalent to

“sound reduction index”.

NOTE 4 Related quantities can be introduced in other documents or test codes, often by adding subscripts, i.e. R for

the sound reduction index as measured by intensity methods, R as the sound reduction index per unit length of slits or ∆R

as the improvement in sound reduction index by linings or suspended ceilings.
3.2
apparent sound reduction index

ten times the common logarithm of the ratio of the sound power, W , that is incident on a test element to the

total sound power radiated into the receiving room if, in addition to the sound power, W , radiated by the test

element, the sound power, W , radiated by flanking elements or by other components is significant

⎛⎞W
R′ = 10 lg (3)
WW+
⎝⎠23
NOTE 1 R' is expressed in decibels.

NOTE 2 In general, the sound power transmitted into the receiving room consists of the sum of several components.

Also, in this case, under the assumption that there are diffuse sound fields in the two rooms, the apparent sound reduction

index is evaluated from Equation (4).
R'=−L L+10 lg (4)

Thus, in the apparent sound reduction index, the sound power transmitted into the receiving room is related to the sound

power that is incident on the test element, as in Equation (2), irrespective of the actual conditions of transmission.

2 © ISO 2010 – All rights reserved
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
3.3
element-normalized level difference
n,e

level difference corresponding to a reference value of absorption area in the receiving room with sound

transmission through the small technical element only; this level difference is evaluated from Equation (5)

DL=−L+10 lg (5)
n,e 1 2 ⎜⎟
where
L is the energy average sound pressure level in the source room, in decibels;
L is the energy average sound pressure level in the receiving room, in decibels;

A is the reference absorption area, in square metres (for the laboratory, A = 10 m );

0 0
A is the equivalent absorption area in the receiving room, in square metres.
NOTE 1 D is expressed in decibels.
n,e

NOTE 2 To achieve a better signal-to-noise ratio, simultaneous measurements can be performed on more than one

element. When performing simultaneous measurements, replace Equation (5) by Equation (6).

DL=−L+10 lg (6)
n,e 1 2 ⎜⎟
where
D is the element-normalized level difference of an individual element;
n,e
n is the number of installed elements.
3.4
small technical element

building element, excluding windows and doors, with an area of less than 1 m , which occurs in a certain

number of discrete sizes and transmits sound between two adjacent rooms or between one room and the

outdoors independently of any adjoining building elements
4 Facilities and equipment

Laboratory test facilities shall comply with the requirements given in ISO 10140-5.

The equipment used to generate the sound field shall meet the requirements given in ISO 10140-5.

Requirements for the equipment used to measure the sound level, and for calibration of that equipment, are

given in ISO 10140-5.
5 Test procedure and evaluation
5.1 General procedure

Two horizontally or vertically adjacent rooms are used, one being designated the source room and the other

the receiving room. The test element is mounted in an opening in the partition between those rooms (see

Clause 6). In the source room, a diffuse sound field is generated by a moving loudspeaker or loudspeakers at

two or more fixed positions. The average sound pressure levels are measured in the source and receiving

© ISO 2010 – All rights reserved 3
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)

rooms, normally in the frequency range of 100 Hz to 5 000 Hz (optionally down to 50 Hz). The equivalent

sound absorption area in the receiving room is calculated from reverberation time measurements. From the

sound pressure level difference between the rooms, the quantities described in Clause 3 can be evaluated by

taking into account the equivalent absorption area and, where appropriate, the size or number of test

elements. The procedures used to determine the average sound pressure levels corrected for background

noise and the reverberation time are specified in ISO 10140-4.

People shall not be present in the source or receiving rooms during measurements to avoid affecting the

sound field.

In the case of sound insulation improvement systems, such as acoustical linings, this procedure is repeated

for the basic element and that the element with the lining under test.
5.2 Sound field in the source room

Qualification of the loudspeaker system, the number and positions of loudspeakers and the method of

operation shall be performed in accordance with ISO 10140-5.

When using a single sound source at two or more positions, these may be in the same room or the

measurements may be repeated in the opposite direction by changing source and receiving rooms with one or

more source positions in each room. The latter is not possible if the test element has one surface which is

significantly more absorbent than the other (see 6.1).

The microphone positions in the source room shall be outside the direct sound field of the source and the

radiation characteristics of the sources shall be taken into account when determining microphone positions, as

specified in ISO 10140-4.
5.3 Data processing

Calculate the sound reduction index or the element-normalized level difference (as defined in Clause 3) from

the measured (and, if necessary, corrected) energy average sound pressure levels in the rooms and the

measured reverberation time, as described in ISO 10140-4.

If sound reduction indices or element-normalized level differences are needed in octave bands, these values

shall be calculated from the three one-third octave band values in each octave band using Equation (7) or

Equation (8):
−R /10
⎛⎞1/3oct,n
R =−10lg (7)
oct ∑
⎜⎟3
n=1
−D /10
⎛⎞n,e,1/3oct,n
D =−10lg (8)
n,e,oct ∑
⎜⎟3
n=1

Perform all calculations with the appropriate accuracy and present the final results with no higher precision

than to the nearest 0,1 dB.

The evaluation of the single-number rating from the results in one-third octave bands shall be done in

accordance with ISO 717-1.
5.4 Expression of results

For the statement of the airborne sound insulation of the test element, the measurement results, R or D ,

n,e

shall be given in decibels at all measurement frequencies in one-third octave bands to one decimal place,

both in tabular form and in the form of a curve.
4 © ISO 2010 – All rights reserved
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)

Graphs in the test report shall show the value in decibels plotted against frequency on a logarithmic scale; the

following dimensions shall be used:
a) 5 mm for a one-third octave band;
b) 20 mm for 10 dB.

The use of a test report form in accordance with Annex B is preferred. Being a short version of the test report,

it shall state all information of importance regarding the test element, the test procedure and the test results.

6 Test arrangement
6.1 General

General requirements for the preparation, curing, installation and mounting of the test element is described in

this clause. For specific types of elements and products, detailed specifications may be given in related

documents; for instance, test codes are covered in ISO 10140-1.
The test element can be of the following different types [a) to e)].

a) The test element can have dimensions that can be fitted in the available full-size test opening (e.g. brick

wall, wooden floor). In this case, it shall be in accordance with 6.2 (test element in large test opening).

b) The test element can be of the same kind as in a), but smaller, provided it fulfils the requirement of 6.3.

c) The dimensions of the test element can be fixed and smaller than the test opening (e.g. doors, windows,

window panes and panels). In this case, it shall fulfil the requirements of 6.4.

d) The test element can be small in size and its dimensions ill-defined (e.g. transfer air devices and outdoor

air intakes). In this case, shall be in accordance with 6.5.

e) The test element of interest can be connected to a base wall/floor element, for example wall lining,

floating floor, window frame and sealing. In this case, it shall fulfil the requirements for specific test codes

for procedures and evaluation of the data in ISO 10140-1.

Sound transmission can depend on the temperature, relative humidity and static pressure in the test rooms at

the time of test and during curing or conditioning of the test element. The conditions shall be reported.

The sound reduction index of heavyweight walls and floors depends on structural coupling to the laboratory

structure. In order to describe the effect of the mounting, it is recommen
...

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