SIST EN ISO 10140-2:2010
(Main)Acoustics - Laboratory measurement of sound insulation of building elements - Part 2: Measurement of airborne sound insulation (ISO 10140-2:2010)
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
Relations
Standards Content (Sample)
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.
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SIST EN ISO 10140-2:2010
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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.
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SIST EN ISO 10140-2:2010
EN ISO 10140-2:2010 (E)
Contents Page
Foreword .3
2
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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.
3
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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
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SIST EN ISO 10140-2:2010
ISO 10140-2:2010(E)
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ii © ISO 2010 – All rights reserved
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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
R
ten times the common logarithm of the ratio of the sound power, W , that is incident on the test element to the
1
sound power, W , radiated by the test element to the other side
2
W
1
R = 10 lg (1)
W
2
NOTE 1 R is expressed in decibels.
For laboratory measurements using sound pressure, the sound reduction index is calculated using:
S
RL=−L+10lg (2)
12
A
where
L is the energy average sound pressure level in the source room, in decibels;
1
L is the energy average sound pressure level in the receiving room, in decibels;
2
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
I
the sound reduction index as measured by intensity methods, R as the sound reduction index per unit length of slits or ∆R
s
as the improvement in sound reduction index by linings or suspended ceilings.
3.2
apparent sound reduction index
R'
ten times the common logarithm of the ratio of the sound power, W , that is incident on a test element to the
1
total sound power radiated into the receiving room if, in addition to the sound power, W , radiated by the test
2
element, the sound power, W , radiated by flanking elements or by other components is significant
3
⎛⎞W
1
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).
S
R'=−L L+10 lg (4)
12
A
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
D
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)
A
⎛⎞
0
DL=−L+10 lg (5)
n,e 1 2 ⎜⎟
A
⎝⎠
where
L is the energy average sound pressure level in the source room, in decibels;
1
L is the energy average sound pressure level in the receiving room, in decibels;
2
2
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).
nA
⎛⎞
0
DL=−L+10 lg (6)
n,e 1 2 ⎜⎟
A
⎝⎠
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
2
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
3
⎛⎞1/3oct,n
10
⎜⎟
R =−10lg (7)
oct ∑
⎜⎟3
n=1
⎝⎠
−D /10
3
⎛⎞n,e,1/3oct,n
10
⎜⎟
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
---------------------- Page: 16 ----------------------
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
...
SLOVENSKI STANDARD
oSIST prEN ISO 10140-2:2009
01-januar-2009
$NXVWLND/DERUDWRULMVNRPHUMHQMH]YRþQHL]ROLUQRVWLJUDGEHQLKHOHPHQWRYGHO
0HUMHQMHL]ROLUQRVWLSUHG]YRNRPY]UDNX ,62',6
Acoustics - Laboratory measurement of sound insulation of building elements - Part 2:
Measurement of airborne sound insulation (ISO/DIS 10140-2:2008)
Akustik - Messung der Schalldämmung von Gebäudeteilen im Prüfstand - Teil 2:
Messung der Luftschalldämmung (ISO/DIS 10140-2:2008)
Acoustique - Détermination de l'isolation acoustique des éléments de construction -
Partie 2: Mesurage de l'isolation des bruits aériens (ISO/DIS 10140-2:2008)
Ta slovenski standard je istoveten z: prEN ISO 10140-2
ICS:
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
oSIST prEN ISO 10140-2:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 10140-2:2009
---------------------- Page: 2 ----------------------
oSIST prEN ISO 10140-2:2009
EUROPEAN STANDARD
DRAFT
prEN ISO 10140-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2008
ICS 91.120.20 Will supersede EN 20140-2:1993
English Version
Acoustics - Laboratory measurement of sound insulation of
building elements - Part 2: Measurement of airborne sound
insulation (ISO/DIS 10140-2:2008)
Acoustique - Détermination de l'isolation acoustique des Akustik - Messung der Schalldämmung von Gebäudeteilen
éléments de construction - Partie 2: Mesurage de l'isolation im Prüfstand - Teil 2: Messung der Luftschalldämmung
des bruits aériens (ISO/DIS 10140-2:2008) (ISO/DIS 10140-2:2008)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 126.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 10140-2:2008: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN ISO 10140-2:2009
prEN ISO 10140-2:2008 (E)
Contents Page
Foreword.3
2
---------------------- Page: 4 ----------------------
oSIST prEN ISO 10140-2:2009
prEN ISO 10140-2:2008 (E)
Foreword
This document (prEN ISO 10140-2:2008) 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 document is currently submitted to the parallel Enquiry.
This document will supersede EN 20140-2:1993.
Endorsement notice
The text of ISO/DIS 10140-2:2008 has been approved by CEN as a prEN ISO 10140-2:2008 without any
modification.
3
---------------------- Page: 5 ----------------------
oSIST prEN ISO 10140-2:2009
---------------------- Page: 6 ----------------------
oSIST prEN ISO 10140-2:2009
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-2
ISO/TC 43/SC 2 Secretariat: DIN
Voting begins on: Voting terminates on:
2008-10-09 2009-03-09
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Acoustics — Laboratory measurement of sound insulation of
building elements —
Part 2:
Measurement of airborne sound insulation
Acoustique — Détermination de l'isolation acoustique des éléments de construction —
Partie 2: Mesurage de l'isolation des bruits aériens
(Revision of ISO 140-1:1997 and ISO 140-1:1997/Amd 1:2004, ISO 140-10:1991, ISO 140-3:1995 and
ISO 140-3:1995/Amd 1:2004, ISO 140-6:1998 and ISO 140-8:1997)
ICS 91.120.20
ISO/CEN PARALLEL ENQUIRY
The CEN Secretary-General has advised the ISO Secretary-General that this ISO/DIS covers a subject
of interest to European standardization. In accordance with the ISO-lead mode of collaboration as
defined in the Vienna Agreement, consultation on this ISO/DIS has the same effect for CEN
members as would a CEN enquiry on a draft European Standard. Should this draft be accepted, a
final draft, established on the basis of comments received, will be submitted to a parallel two-month FDIS
vote in ISO and formal vote in CEN.
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED 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 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 NATIONAL REGULATIONS.
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.
©
International Organization for Standardization, 2008
---------------------- Page: 7 ----------------------
oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
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Violators may be prosecuted.
©
ii ISO 2008 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
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 or reduced size test openings.9
Annex B (informative) Form for the expression of results .12
Bibliography.14
© ISO 2008 – All rights reserved iii
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
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.
ISO 10140 consists of the following parts, under the general title Acoustics — Laboratory measurement of
sound insulation of building elements:
⎯ Part 1: Test codes
⎯ 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 equipement
iv © ISO 2008 – All rights reserved
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
Introduction
ISO 140 is one of the basic series of standards in building acoustics. It currently has several parts describing
laboratory measurements, mounting conditions of test elements in the laboratory, and field measurements. To
improve the layout of Standards for laboratory measurements, to ensure consistency, and to simplify future
changes and additions, ISO/TC 43/SC 2 have created a new series of Standards, ISO 10140. The parts of
ISO 140 that are concerned with laboratory measurement of the acoustic performance of products (ISO 140-1,
-3, -6, -8, -10, -11 and -16) have been re-written and re-arranged with minimal alteration to the contents. The
new Standard, ISO 10140, consists of the parts stated in the Foreword.
ISO 10140-1 describes the test codes for elements and products, including specific requirements for
preparation, mounting, operating and test conditions for elements and products. In the future, Part 1 will be
updated in cooperation with the relevant product Technical Committees. ISO 10140-2 and ISO 10140-3
contain the general procedures for airborne and impact sound insulation measurements respectively and refer
to ISO 10104-4 and ISO 10140-5 where appropriate. For elements and products without a specific test code
described in ISO 10140-1 it is still possible to apply ISO 10140-2 and ISO 10140-3. ISO 10140-4 contains the
basic measurement techniques and processes. ISO 10140-5 contains the requirements on test facilities and
equipment.
In the future it will be possible to insert other measurement techniques and standards into this series, for
example, sound insulation measurement using intensity techniques (ISO 15186) and rainfall noise
measurement (ISO 140-18).
© ISO 2008 – All rights reserved v
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
Structure and contents of the new ISO 10140 series:
“Acoustics – Laboratory measurement of sound insulation of building elements”
ISO number Main purpose, contents & use Detailed contents
& subtitle
ISO 10140-1 Indicates the appropriate test procedure for elements and Appropriate references to parts 2 and 3 and product related,
Test codes products. For some types of elements / products, the specific and additional instructions on:
standard may contain additional and more specific - specific quantities to be measured
instructions about quantities and test element size and about - size of test element
preparation, mounting and operating conditions. Where no
- boundary and mounting conditions
specific details are included, the general guidelines in parts - conditioning, testing and operating conditions
2 and 3 shall be followed. - additional specifics for test report
ISO 10140-2 Complete procedure for airborne sound insulation - Definitions of main quantities to be measured
Measurement of measurements, referring to parts 4 and 5. It shall be - General mounting & boundary conditions
airborne sound sufficiently complete and general to perform measurements - General measurement procedure
insulation for products without a specific test code, but specifics in part - Data processing
1 shall be applied, if available. - Test report (general points)
ISO 10140-3 Complete procedure for impact sound insulation - Definitions of main quantities to be measured
Measurement of measurements, referring to parts 4 and 5. It shall be - General mounting & boundary conditions
impact sound sufficiently complete and general to perform measurements - General measurement procedure
insulation for products without a specific test code, but specifics in - Data processing
part 1 shall be applied, if available. - Test report (general points)
ISO 10140-4 All needed basic measurement techniques and processes, - Definitions
Measurement for measurements following parts 2 and 3 or facility - Frequency range
procedures and qualifications following part 5. Much of the contents - Microphone positions
requirements 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 measurement
ISO 10140-5 All information needed to design, construct and qualify the Test facilities, design criteria:
Requirements for laboratory facility, its additional accessories and - volumes, dimensions
test facilities and measurement equipment (hardware). - flanking transmission
equipment - laboratory loss factor
- maximum achievable sound reduction index
- reverberation time
- influence of lack of diffusivity in the lab
Test openings:
- standard openings for walls, 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 2008 – All rights reserved
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oSIST prEN ISO 10140-2:2009
DRAFT INTERNATIONAL STANDARD ISO/DIS 10140-2
1 Scope
This document 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,
such as transfer air devices, airing panels (ventilation panels), outdoor air intakes, electrical raceways, transit
sealing systems, and combinations such as 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, to classify
elements according to their sound insulation capabilities, to help design building products which require
certain acoustic properties, and to 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 document shall not be applied
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/DIS 10140-1, Acoustics – Laboratory measurement of sound insulation of building elements — Part 1:
Test codes
ISO/DIS 10140-4:2008, Acoustics – Laboratory measurement of sound insulation of building elements —
Part 4: Measurement procedures and requirements
ISO/DIS 10140-5:2008, Acoustics - Laboratory measurement of sound insulation of building elements —
Part 5: Requirements for test facilities
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
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
sound reduction index
R
ten times the common logarithm of the ratio of the sound power, W , which is incident on the test element to
1
the sound power, W , radiated by the test element
2
W
1
R= 10 lg (1)
W
2
NOTE 1 R is expressed in decibels.
© ISO 2008 – All rights reserved 1
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
For laboratory measurements using sound pressure, the sound reduction index is calculated using:
S
R= L − L +10lg (2)
1 2
A
where
L is the energy average sound pressure level in the source room, in decibels;
1
L is the energy average sound pressure level in the receiving room, in decibels;
2
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 may be introduced in other documents or test codes, often by adding subscripts, i.e. R for
I
the sound reduction index as measured by intensity methods, R as the sound reduction index per unit length of slits or ∆R
s
as the improvement in sound reduction index by linings or suspended ceilings.
3.2
apparent sound reduction index
R'
ten times the common logarithm of the ratio of the sound power, W , which is incident on a test element to the
1
total sound power radiated into the receiving room if, in addition to the sound power, W , radiated by the test
2
element, the sound power, W , radiated by flanking elements or by other components, is significant.
3
⎛ W ⎞
1
⎜ ⎟
R'= 10 lg (3)
⎜ ⎟
W + W
2 3
⎝ ⎠
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).
S
R'= L− L +10lg (4)
1 2
A
Thus, in the apparent sound reduction index, the sound power transmitted into the receiving room is related to the sound
power which is incident on the test element as in equation (2) irrespective of the actual conditions of transmission.
3.3
element-normalized level difference
D
n,e
The 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).
⎛ A ⎞
0
D = L − L +10 lg⎜ ⎟ (5)
n,e 1 2
⎜ ⎟
A
⎝ ⎠
where
2 © ISO 2008 – All rights reserved
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
L is the energy average sound pressure level in the source room, in decibels;
1
L is the energy average sound pressure level in the receiving room, in decibels;
2
2
A is the reference 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.
ne
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).
⎛ nA ⎞
0
D = L − L + 10 lg⎜ ⎟ (6)
n,e 1 2
⎜ ⎟
A
⎝ ⎠
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 elements
2
are building elements, excluding windows and doors, with an area of less than 1 m which occur in a certain
number of discrete sizes which transmit sound between two adjacent rooms, or between one room and the
free-field independently of any adjoining building elements.
4 Facilities and equipment
Laboratory test facilities shall comply with the requirements given in ISO/DIS 10140-5:2008.
The equipment to generate the sound field shall meet the requirements given in ISO/DIS 10140-5:2008.
Requirements for equipment to measure the sound level, and for calibration of that equipment, are given in
ISO/DIS 10140-5:2008.
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 a loudspeaker at
two or more fixed positions. The average sound pressure levels are measured in the source and receiving
room, normally in the frequency range from 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
taking into account the equivalent absorption area and, where appropriate, the size or number of test
elements. The procedures to determine the average sound pressure levels corrected for background noise
and the reverberation time are specified in ISO/DIS 10140-4:2008.
The sound fields in the source or receiving room shall not be affected by the presence of people in those
rooms during the tests.
© ISO 2008 – All rights reserved 3
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
In case of sound insulation improvement systems such as acoustical linings, this procedure is repeated for the
basic element and that 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
operating shall be performed in accordance with ISO/DIS 10140-5:2008.
When using a single sound source at two or more positions, they may be in the same room or the
measurements may be repeated in the opposite direction by changing source and receiving room 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 5.1.
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/DIS 10140-4:2008.
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/DIS 10140-4:2008.
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 (8) or
equation (9).
−R /10
3
⎛ 1/3oct,n ⎞
10
⎜ ⎟
R =−10lg (8)
oct ∑
⎜ ⎟
3
n=1
⎝ ⎠
3 −D /10
⎛ ne,1/3oct,n ⎞
10
⎜ ⎟
D =−10lg (9)
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, in
tabular form and in the form of a curve.
Graphs in the test report shall show the value in decibels plotted against frequency on a logarithmic scale; the
following dimensions shall be used:
⎯ 5 mm for a one-third octave band;
⎯ 20 mm for 10 dB.
4 © ISO 2008 – All rights reserved
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oSIST prEN ISO 10140-2:2009
ISO/DIS 10140-2
The use of a 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 test element will be described in
this section. For specific types of elements and products detailed specifications may be given in dedicated
documents, like test codes (see ISO/DIS 10140-1).
The test element can be of different types:
a) The test element could have dimensions that can be fitted in the available full-size test opening (for
example: brick wall, wooden floor). In this case, refer
...
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