CEN/TC 126/WG 1 - Methods for measuring the sound insulation of building elements and the acoustic performances of buildings

This test method covers the use of an impedance tube, two microphone locations and a frequency
analysis system for the determination of the sound absorption coefficient of sound absorbing materials
for normal incidence sound incidence. It can also be applied for the determination of the acoustical
surface impedance or surface admittance of sound absorbing materials. As an extension, it can also be
used to assess intrinsic properties of homogeneous acoustical materials such as their characteristic
impedance, characteristic wavenumber, dynamic mass density and dynamic bulk modulus.
The test method is similar to the test method specified in ISO 10534-1[1] in that it uses an impedance
tube with a sound source connected to one end and the test sample mounted in the tube at the other
end. However, the measurement technique is different. In this test method, plane waves are generated
in a tube by a sound source, and the decomposition of the interference field is achieved by the
measurement of acoustic pressures at two fixed locations using wall-mounted microphones or an intube
traversing microphone, and subsequent calculation of the complex acoustic transfer function and
quantities reported in the previous paragraph. The test method is intended to provide an alternative,
and generally much faster, measurement technique than that of ISO 10534-1[1].
Normal incidence absorption coefficients coming from impedance tube measurements are not
comparable with random incidence absorption coefficients measured in reverberation rooms according
to ISO 354[2]. The reverberation room method will (under ideal conditions) determine the sound
absorption coefficient for diffuse sound incidence. However, the reverberation room method requires
test specimens which are rather large. The impedance tube method is limited to studies at normal and
plane incidence and requires samples of the test object which are of the same size as the cross-section
of the impedance tube. For materials that are locally reacting only, diffuse incidence sound absorption
coefficients can be estimated from measurement results obtained by the impedance tube method (see
Annex E).
Through the whole document, a e+ jt time convention is used.

This document specifies field survey methods for measuring
a) airborne sound insulation between rooms,
b) impact sound insulation of floors,
c) airborne sound insulation of façades, and
d) sound pressure levels in rooms caused by service equipment.
The methods described in this document are applicable for measurements in rooms of dwellings or in rooms of comparable size with a maximum of 150 m3.
For airborne sound insulation, impact sound insulation and façade sound insulation the method gives values which are (octave band) frequency dependent. They can be converted into a single number characterising the acoustical performances by application of ISO 717-1 and ISO 717-2. For heavy/soft impact sound insulation, the results also are given as A-weighted maximum impact sound pressure level. For service equipment sound the results are given directly in A - or C -weighted sound pressure levels.

This document specifies test requirements for the laboratory measurement of the sound insulation of building elements and products, including detailed requirements for the preparation and mounting of the test elements, and for the operating and test conditions. It also specifies the applicable quantities, and provides additional test information for reporting.
The general procedures for airborne and impact sound insulation measurements are given in ISO 10140‑2 and ISO 10140-3, respectively.

This document specifies laboratory test facilities and equipment for sound insulation measurements of building elements, such as:
—    components and materials;
—    building elements;
—    technical elements (small building elements);
—    sound insulation improvement systems.
It is applicable to laboratory test facilities with suppressed radiation from flanking elements and structural isolation between source and receiving rooms.
This document specifies qualification procedures for use when commissioning a new test facility with equipment for sound insulation measurements. It is intended that these procedures be repeated periodically to ensure that there are no issues with the equipment and the test facility.

This document specifies laboratory methods for measuring the impact sound insulation of floor assemblies.
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 document are not applicable directly to the field situation without accounting for other factors affecting sound insulation, such as flanking transmission, boundary conditions, and loss factor.
A test method is specified that uses the standard tapping machine (see ISO 10140-5:2021, Annex E) to simulate impact sources like human footsteps when a person is wearing shoes. Alternative test methods, using a modified tapping machine or a heavy/soft impact source (see ISO 10140-5:2021, Annex F) to simulate impact sources with strong low frequency components, such as human footsteps (bare feet) or children jumping, are also specified.
This document is applicable to all types of floors (whether heavyweight or lightweight) with all types of floor coverings. The test methods apply only to laboratory measurements.

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, 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 document 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.

This document specifies the basic measurement procedures for airborne and impact sound insulation of building elements in laboratory test facilities.

This document specifies a laboratory measurement method to determine noise radiated from a floor covering on a standard concrete floor when excited by a standard tapping machine.

ISO 18233:2006 gives guidelines and specifies requirements for the application of new methods for the measurement of the acoustic properties of buildings and building elements. Guidelines and requirements for selection of the excitation signal, signal processing and environmental control are given, together with requirements for linearity and time-invariance for the systems to be tested.
ISO 18233:2006 is applicable to such measurements as airborne sound insulation between rooms and of façades, measurement of reverberation time and other acoustic parameters of rooms, measurement of sound absorption in a reverberation room, and measurement of vibration level differences and loss factor.
ISO 18233:2006 specifies methods to be used as substitutes for measurement methods specified in standards covering classical methods, such as ISO 140 (all parts), ISO 3382 (all parts) and ISO 17497-1.

ISO 354:2003 specifies a method of measuring the sound absorption coefficient of acoustical materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects, such as furniture, persons or space absorbers, in a reverberation room. It is not intended to be used for measuring the absorption characteristics of weakly damped resonators.
The results obtained can be used for comparison purposes and for design calculation with respect to room acoustics and noise control.

Specifies a method for the determination of the sound absorption coefficient, reflection factor, surface impedance or admittance of materials and objects. The values are determined by evaluation of the standing wave pattern of a plane wave in a tube, which is generated by the superposition of an incident sinusiodal plane wave with the plane wave reflected from the test object.

This document specifies procedures to measure in laboratory the impact sound level reduction of isolated heavy landings connected to a heavy wall, isolated heavy flights of stairs connected to a heavy landing, lower or upper floor, and lightweight stairs connected to a heavy wall, lower or upper floor.
This document also considers the characterization of isolating elements for heavy landings or heavy flights of stairs in terms of an insertion loss expressed as an impact sound level difference. The corresponding procedure is given in a normative annex (Annex A), separated from the other procedures for the sake of clarity.
The tests are performed in defined test configurations and the test results are firstly restricted to the test configurations as described in the test report. The data can be used for comparing the performance of products and as input for EN ISO 12354-2:2017, Annex F, to calculate the sound pressure levels produced by the same stairs and isolating elements when installed in buildings.
The test procedures defined in this document comprise the frequency range from 50 Hz to 5000 Hz.

2017-05-30: Project cancelled in ISO/CS (see notification 2017-05-24) - awaiting BT confirmation to cancel CEN project.

2014-05-22 GVN: WI stopped following withdrawal of the ISO WI (see ISO notification in dataservice on 2014-05-21).
2013-06-28 LVO: Text received in ISO/CS (see notification of 2013-06-27 in dataservice).

ISO 10140-3:2010 specifies laboratory methods for measuring the impact sound insulation of floor assemblies.
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.

Extension of the existing standard to resilient flooring, textile flooring and laminate floor coverings; the amended draft to include an annex reporting about the inter-laboratory trials to be conducted, covering representative samples of all CEN/TC 134 product groups.

ISO 16032:2004 specifies methods for measuring the sound-pressure level produced by service equipment attached to or installed in buildings. It specifically covers measurements on sanitary installations, mechanical ventilation, heating and cooling service equipment, lifts, rubbish chutes, boilers, blowers, pumps and other auxiliary service equipment, and motor-driven car park doors, but can also be applied to other equipment attached to or installed in buildings.
The methods are suitable for rooms with volumes of approximately 300 cubic metres or less in e.g. dwellings, hotels, schools, offices and hospitals. The standard is not in general intended for measurements in large auditoria such as concert halls. However, the operating conditions and operating cycles in Annex B can be used in such cases.
The service equipment sound-pressure level is determined as the maximum A-weighted and optionally C-weighted sound-pressure level occurring during a specified operation cycle of the service equipment under test, or as the equivalent continuous sound-pressure level determined with a specified integration time. A-weighted and C-weighted values are calculated from octave-band measurements.

This test method covers the use of an impedance tube, two microphone locations and a digital frequency analysis system for the determination of the sound absorption coefficient of sound absorbers for normal sound incidence. It can also be applied for the determination of the acoustical surface impedance or surface admittance of sound absorbing materials. Since the impedance ratios of a sound absorptive material are related to its physical properties, such as airflow resistance, porosity, elasticity and density, measurements described in this test method are useful in basic research and product development.
The test method is similar to the test method specified in ISO 10534-1 in that it uses an impedance tube with a sound source connected to one end and the test sample mounted in the tube at the other end. However, the measurement technique is different. In this test method, plane waves are generated in a tube by a noise source, and the decomposition of the interference field is achieved by the measurement of acoustic pressures at two fixed locations using wall-mounted microphones or an in-tube traversing microphone, and subsequent calculation of the complex acoustic transfer function, the normal incidence absorption and the impedance ratios of the acoustic material. The test method is intended to provide an alternative, and generally much faster, measurement technique than that of ISO 10534-1.
Compared with the measurement of the sound absorption in a reverberation room according to the method specified in ISO 354, there are some characteristic differences. The reverberation room method will (under ideal conditions) determine the sound absorption coefficient for diffuse sound incidence, and the method can be used for testing of materials with pronounced structures in the lateral and normal directions. However, the reverberation room method requires test specimens which are rather large, so it is not convenient for research and development work, where only small samples of the absorber are available. The impedance tube method is limited to parametric studies at normal incidence but requires samples of the test object which are of the same size as the cross-section of the impedance tube. For materials that are locally reacting, diffuse incidence sound absorption coefficients can be estimated from measurement results obtained by the impedance tube method. For transformation of the test results from the impedance tube method (normal incidence) to diffuse sound incidence, see annex F.

This document specifies field survey methods for measuring: a) airborne sound insulation between rooms; b) impact sound insulation of floors; c) airborne sound insulation of façades; and d) sound pressure levels in rooms caused by service equipment. The methods described in this document are applicable for measurements in rooms of dwellings or in rooms of comparable size with a maximum of 150 m3. For airborne sound insulation, impact sound insulation and façade sound insulation the method gives values which are (octave band) frequency dependent. They can be converted into a single number characterising the acoustical performances by application of EN ISO 717-1 and EN ISO 717-2. For service equipment sound the results are given directly in A - or C -weighted sound pressure levels.

ISO 10052:2004 specifies field survey methods for measuring:
a) airborne sound insulation between rooms;
b) impact sound insulation of floors;
c) airborne sound insulation of facades; and
d) sound pressure levels in rooms caused by service equipment.
The methods described in ISO 10052:2004 are applicable to measurements in rooms of dwellings or in rooms of comparable size with a maximum of 150 m 3 .

ISO 10140-1:2016 specifies test requirements for building elements and products, including detailed requirements for preparation, mounting, operating and test conditions, as well as applicable quantities and additional test information for reporting. The general procedures for airborne and impact sound insulation measurements are given in ISO 10140-2 and ISO 10140-3, respectively.

2013-10-01 GVN: Draft for // vote received in ISO/CS (see notification of 2013-10-01 in dataservice).
2013-01-23 EMA: Draft for // ENQ received in ISO/CS (see notification of 2013-01-23 in dataservice).

ISO 10140-5:2010 specifies laboratory test facilities and equipment for sound insulation measurements of building elements, such as components and materials, building elements, technical elements (small building elements) and sound insulation improvement systems.

ISO 10140-3:2010 specifies laboratory methods for measuring the impact sound insulation of floor assemblies.
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.

ISO 10140-2:2010 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.

ISO 10140-4:2010 specifies the basic measurement procedures for airborne and impact sound insulation in laboratory test facilities.

This European Standard specifies a laboratory measurement method to determine noise radiated from a floor covering on a standard concrete floor when excited by a standard tapping machine.

This European Standard specifies a laboratory measurement method to determine noise radiated from a floor covering on a standard concrete floor when excited by a standard tapping machine.

ISO 10140-1:2010 specifies test requirements for building elements and products, including detailed requirements for preparation, mounting, operating and test conditions, as well as applicable quantities and additional test information to be reported.

The standard specifies procedures for assessing the uncertainty (repeatability and reproductability values) in the acoustical measurements described in ISO 140-3 to 9 due to random and systematic influences

Migrated from Progress Sheet (TC Comment) (2000-07-10): EN ISO 140-1 and -3 to -8 are a package and have as DOW 1997-06-30 (BTS1 17/94) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997) ++ SPP update 1997-12-11

Migrated from Progress Sheet (TC Comment) (2000-07-10): EN ISO 140-1 and -3 to -8 are a package and have as DOW 1997-06-30 (BTS1 17/94) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997) ++ SPP update 1997-12-11

Migrated from Progress Sheet (TC Comment) (2000-07-10): EN ISO 140-1 and -3 to -8 are a package and have as DOW 1997-06-30 (BTS1 17/94) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997) ++ SPP update 1997-12-11

This document describes a measurement method of sound reduction index improvement by additional lining. It can be used for all types of building elements and products as horizontal and vertical additional linings. The results can be used for acoustic properties comparison. The measurement results will contribute to the acoustic performance of buildings from the performance of products.

2010-03-11 EMA: Standard under revision in ISO.

This document is an amendment to EN ISO 140-3 to introduce the description of boundary conditions for acoustical testing of lightweight multiple-leaf constructions

This document is an amendment to EN ISO 140-3 to introduce the description of boundary conditions for acoustical testing of lightweight multiple-leaf constructions

The standard specifies a laboratory method of measuring impact noise transmission through floors by using a standard tapping machine.

Migrated from Progress Sheet (TC Comment) (2000-07-10): Resolution BTS1 21/92: parallel vote CEN/ISO ++ EN ISO 140-1 and -3 to -8 are a package and have as DOW 1997-06-30 (BTS1 17/94) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997)

Migrated from Progress Sheet (TC Comment) (2000-07-10): EN ISO 140-1 and -3 to -8 are a package and have as DOW 1997-06-30 (BTS1 17/94) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997)

Migrated from Progress Sheet (TC Comment) (2000-07-10): Launched in parallel vote ISO/CEN ++ DOW : 1997-06 (Package with parts 1 and 4 to 8) ++ DOW for EN ISO 140-1, -3 to -8 will be 1998-12-31 (2nd ext. - BTS1 C 16/1997)

This document specifies methods for the measurement of reverberation time in rooms. It is not restricted to auditoria or concert halls; it is also applicable to rooms intended for speech and music or where noise protection is a consideration. It describes the measurement procedure, the apparatus needed, the coverage required, and the method of evaluating the data and presenting the test report. Furthermore, it is intended for application of modern digital measuring techniques and for evaluation of room acoustical parameters derived from impulse responses.

The standard specifies a laboratory method of measuring the airborne sound insulation of a suspended ceiling with a plenum of defined height mounted above an acoustical barrier which seperates two rooms of a specified test facility. The method may be extended to composite ceiling systems including luminaires, ventilations systems

The standard specifies a method of measuring the sound absorption coefficient of acoustical materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects (e.g. furnitures, persons...) in a reverberation room