17.140 - Acoustics and acoustic measurements
ICS 17.140 Details
Acoustics and acoustic measurements
Akustik und akustische Messungen
Acoustique et mesurage acoustique
Akustika in akustična merjenja
General Information
e-Library Subscription
Create subscription and get permanent access to documents within 17.140 - Acoustics and acoustic measurements
Currently subscription includes documents marked with .We are working on making all documents available within the subscription.
IEC 63412-1:2024 specifies quantities and parameters which it is essential to provide to the user of shear-wave elastography systems, many in the image headers.
This document is applicable to medical-diagnostic, ultrasonic shear-wave elastography systems, exciting (internally or externally) shear waves and tracking their propagation within biological tissue.
- Standard41 pagesEnglish and French languagesale 15% off
This document gives guidance on the determination of (measurement) uncertainties of sound power levels determined according to ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3744, ISO 3745, ISO 3746 and ISO 3747
- Standard35 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies methods for qualifying an environment that approximates to an acoustic free field near one or more reflecting planes. The goal of the qualification is to determine the environmental correction K2, which is used to correct for reflected sound when determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in such an environment. In addition, the environmental correction K2 is used as an input parameter for the determination of the local environmental correction K3 which is used to determine the emission sound pressure level in an environment that approximates to an acoustic free field near one or more reflecting planes.
In practice, the K2 value determined will be a function of both the reflected sound from the test environment and the shape and size of the measurement surface used for the K2 determination. For the purposes of this standard and the standards that refer to it, the differences between K2 values determined with different measurement surfaces are assumed to be included in the stated measurement uncertainty for the test method.
- Standard23 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60601-2-37:2024 is available as IEC 60601-2-37:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60601-2-37:2024 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of ULTRASONIC DIAGNOSTIC EQUIPMENT as defined in 201.3.217, hereinafter referred to as ME EQUIPMENT. If a clause or subclause is specifically intended to be applicable to ME EQUIPMENT only, or to ME SYSTEMS only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to ME EQUIPMENT and to ME SYSTEMS, as relevant. HAZARDS inherent in the intended physiological function of ME EQUIPMENT or ME SYSTEMS within the scope of this document are not covered by specific requirements in this document except in 201.7.2.13. This document does not cover ultrasonic therapeutic equipment. Equipment used for the imaging or diagnosis of body structures by ultrasound in conjunction with other medical procedures is covered. IEC 60601-2-37:2024 cancels and replaces the second edition published in 2007 and Amendment 1:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) technical and editorial changes resulting from the amended general standard IEC 60601 1:2005, IEC 60601-1:2005/AMD1:2012 and IEC 60601-1:2005/AMD2:2020 and its collateral standards IEC 60601-1-xx,
b) technical and editorial changes as a result of maintenance to normative references;
c) technical and editorial changes resulting from relevant developments in TC 87 Ultrasonics standards. In particular, Clause 201.11 about protection against excessive temperatures and other hazards has been fully revised.
- Standard181 pagesEnglish languagesale 15% off
- Standard118 pagesEnglish and French languagesale 15% off
This document gives guidance on the determination of measurement uncertainties of sound power levels determined according to ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3744, ISO 3745, ISO 3746, ISO 3747 or according to a noise test code based on one of these measurement standards.
- Standard35 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60317-47:2013 specifies the requirements of enamelled rectangular copper winding wire of class 240 with a sole coating of aromatic polyimide resin. The range of nominal conductor dimensions covered by this standard is:
- width: min. 2,0 mm max. 16,0 mm;
- thickness: min. 0,80 mm max. 5,60 mm. Wires of grade 1 and grade 2 are included in this specification and apply to the complete range of conductors. The specified combinations of width and thickness, as well as the specified width/thickness ratio, are given in IEC 60317-0-2. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- deletion of the "in some countries" statement in the scope;
- new subclause containing general notes on winding wire, formerly a part of the scope;
- new subclause containing requirements for appearance;
- revision to the notes in Clause 19, Dielectric dissipation factor;
- new Clause 23, Pin hole test. Keywords: requirements of enamelled rectangular copper winding wire, class 240, sole coating of aromatic polyimide resin.
This publication is to be read in conjunction with IEC 60317-0-2:2013.
- Standard19 pagesEnglish languagesale 15% off
- Standard17 pagesEnglish and French languagesale 15% off
This document gives guidance on the determination of measurement uncertainties of sound power levels determined according to ISO 3741, ISO 3743-1, ISO 3743-2, ISO 3744, ISO 3745, ISO 3746, ISO 3747 or according to a noise test code based on one of these measurement standards.
- Standard27 pagesEnglish languagesale 15% off
- Standard29 pagesFrench languagesale 15% off
This document specifies methods for qualifying an environment that approximates to an acoustic free field near one or more reflecting planes. The goal of the qualification is to determine the environmental correction , which is used to correct for reflected sound when determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in such an environment.
In practice, the value determined will be a function of both the reflected sound from the test environment and the shape and size of the measurement surface used for the determination. For the purposes of this document and the documents that refer to it, the differences between values determined with different measurement surfaces are assumed to be included in the stated measurement uncertainty for the test method.
- Standard23 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60704-2-9:2024 is available as IEC 60704-2-9:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60704-2-9:2024 applies to electric hand-held hairdryers for household and similar use supplied from mains, which operate with a flow of air. These particular requirements can also be applied to analogous electrically operated devices such as hairstyling appliances, which produce the airflow by a fan. Helmet-type hairdryers are excluded from this document. This document does not apply to hair care appliances with radiant heating. For determining and verifying noise emission values declared in product specifications, see IEC 60704-3. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Alignment with IEC 60704-1:2021.
This part 2-9 is intended to be used in conjunction with the fourth edition of IEC 60704-1:2021: Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
- Standard37 pagesEnglish languagesale 15% off
- Standard57 pagesEnglish languagesale 15% off
- Standard24 pagesEnglish and French languagesale 15% off
This document is a supplement to ISO 21388 which applies to hearing aid fitting management (HAFM)
services offered by hearing aid professionals (HAP). It focusses on tele-services which may substitute,
or complement services defined in ISO 21388, and it defines services which shall be provided in the
facilities of the HAP. Moreover, this document specifies important preconditions such as education,
facilities and systems that are required to ensure proper tele-services. If not other stated all definitions
and requirements of ISO 21388 also apply for this standard without further notice. Furthermore, it is
tried to keep the structure if ISO 21388 to make it easier to use both standards together. It is
recognized that certain populations with hearing loss such as children, persons with other disabilities or
persons with implantable devices can require services outside the scope of this document.
Other assisted tele-services provided by non-hearing aid professionals, self-fitting, and other nonhearing
care related will also be outside of the scope.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60118-0:2022 gives recommendations for the measurement of the performance characteristics of air conduction hearing aids measured with an acoustic coupler or occluded ear simulator.
This document is applicable to the measurement and evaluation of the electroacoustical characteristics of hearing aids, for example for type testing and manufacturer data sheets.
This document is also applicable for the measurement of the performance characteristics of hearing aids for production, supply and delivery quality-assurance purposes.
The measurement results obtained by the methods specified in this document will express the performance under conditions of the measurement and can deviate substantially from the performance of the hearing aid under actual conditions of use.
This document primarily uses an acoustic coupler according to IEC 60318-5 which is only intended for loading a hearing aid with specified acoustic impedance and is not intended to reproduce the sound pressure in a person's ear. For measurements reflecting the output level in the normal human ear the occluded ear simulator according to IEC 60318-4 can be used. For extended high-frequency measurements and for deep insert hearing aids, the acoustic coupler according to IEC 60318-8 can be used.
This document also covers measurement of hearing aids with non-acoustic inputs, such as wireless, inductive or electrical input.
This document does not cover the measurement of hearing aids for simulated in situ working conditions, for which IEC 60118-8 can be applied.
This document does not cover the measurement of hearing aids under typical user settings and using a speech-like signal, for which IEC 60118-15 can be applied.
IEC 60118-0:2022 merges and updates the methods previously described in IEC 60118-0:2015 and IEC 60118-7:2005. It cancels and replaces the third edition of IEC 60118-0 published in 2015. This edition constitutes a technical revision.
Measurements for quality control as described in IEC 60118-7:2005 can be found in Clause 10 of this document.
This edition includes the following significant technical changes with respect to previous editions:
a) the default use of an acoustic coupler according to IEC 60318-5,
b) addition of the optional use of an occluded ear simulator according to IEC 60318-4,
c) addition of the optional use of an acoustic coupler according to IEC 60318-8 (new standard based on IEC TS 62886) when information about the response above 8 kHz is needed, or the optional use of the acoustic coupler according to IEC 60318-8 for deep insert hearing aids,
d) the addition of measurements of the performance of hearing aids for production, supply and delivery quality assurance purposes,
e) corrected and updated measurement configuration and methods, adding the use of a sequential measurement as preferred configuration,
f) updated and expanded measurement procedures for the non-acoustic inputs of the hearing aid.
- Standard77 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies methods for qualifying an environment that approximates to an acoustic free field near one or more reflecting planes. The goal of the qualification is to determine the environmental correction K2 , which is used to correct for reflected sound when determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in such an environment. In practice, the K2 value determined will be a function of both the reflected sound from the test environment and the shape and size of the measurement surface used for the K2 determination. For the purposes of this document and the documents that refer to it, the differences between K2 values determined with different measurement surfaces are assumed to be included in the stated measurement uncertainty for the test method.
- Standard15 pagesEnglish languagesale 15% off
- Standard17 pagesFrench languagesale 15% off
- Amendment9 pagesEnglish languagesale 10% offe-Library read for1 day
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.
- Standard29 pagesEnglish languagesale 10% offe-Library read for1 day
This document is a supplement to ISO 21388 which applies to hearing aid fitting management (HAFM) services offered by hearing aid professionals (HAP). It focusses on tele-services which can substitute, or complement services defined in ISO 21388, and it defines services which is provided in the facilities of the HAP.
Moreover, this document specifies important preconditions such as education, facilities and systems that are required to ensure proper tele-services. If not other stated all definitions and requirements of ISO 21388 also apply for this document without further notice. Furthermore, it is tried to keep the structure of ISO 21388 to make it easier to use both standards together. It is recognized that certain populations with hearing loss such as children, persons with other disabilities or persons with implantable devices can require services outside the scope of this document.
Assisted tele-services provided by non-hearing aid professionals, self-fitting, and other non-hearing care related services are also outside the scope of this document.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
This document is a supplement to ISO 21388 which applies to hearing aid fitting management (HAFM) services offered by hearing aid professionals (HAP). It focusses on tele-services which can substitute, or complement services defined in ISO 21388, and it defines services which is provided in the facilities of the HAP. Moreover, this document specifies important preconditions such as education, facilities and systems that are required to ensure proper tele-services. If not other stated all definitions and requirements of ISO 21388 also apply for this document without further notice. Furthermore, it is tried to keep the structure of ISO 21388 to make it easier to use both standards together. It is recognized that certain populations with hearing loss such as children, persons with other disabilities or persons with implantable devices can require services outside the scope of this document. Assisted tele-services provided by non-hearing aid professionals, self-fitting, and other non-hearing care related services are also outside the scope of this document.
- Standard12 pagesEnglish languagesale 15% off
- Standard13 pagesFrench languagesale 15% off
Specifies a frequency-weighting characteristic, designated G, for the determination of weighted sound pressure levels of sound or noise whose spectrum lies partly or wholly within the frequency band from 1 Hz to 20 Hz.
- Standard6 pagesEnglish languagesale 15% off
- Standard10 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard7 pagesFrench languagesale 15% off
- Standard7 pagesFrench languagesale 15% off
IEC 60118-0:2022 gives recommendations for the measurement of the performance characteristics of air conduction hearing aids measured with an acoustic coupler or occluded ear simulator. This document is applicable to the measurement and evaluation of the electroacoustical characteristics of hearing aids, for example for type testing and manufacturer data sheets. This document is also applicable for the measurement of the performance characteristics of hearing aids for production, supply and delivery quality-assurance purposes. The measurement results obtained by the methods specified in this document will express the performance under conditions of the measurement and can deviate substantially from the performance of the hearing aid under actual conditions of use. This document primarily uses an acoustic coupler according to IEC 60318-5 which is only intended for loading a hearing aid with specified acoustic impedance and is not intended to reproduce the sound pressure in a person's ear. For measurements reflecting the output level in the normal human ear the occluded ear simulator according to IEC 60318-4 can be used. For extended high-frequency measurements and for deep insert hearing aids, the acoustic coupler according to IEC 60318-8 can be used. This document also covers measurement of hearing aids with non-acoustic inputs, such as wireless, inductive or electrical input. This document does not cover the measurement of hearing aids for simulated in situ working conditions, for which IEC 60118-8 can be applied. This document does not cover the measurement of hearing aids under typical user settings and using a speech-like signal, for which IEC 60118-15 can be applied. IEC 60118-0:2022 merges and updates the methods previously described in IEC 60118-0:2015 and IEC 60118-7:2005. It cancels and replaces the third edition of IEC 60118-0 published in 2015. This edition constitutes a technical revision. Measurements for quality control as described in IEC 60118-7:2005 can be found in Clause 10 of this document. This edition includes the following significant technical changes with respect to previous editions: a) the default use of an acoustic coupler according to IEC 60318-5, b) addition of the optional use of an occluded ear simulator according to IEC 60318-4, c) addition of the optional use of an acoustic coupler according to IEC 60318-8 (new standard based on IEC TS 62886) when information about the response above 8 kHz is needed, or the optional use of the acoustic coupler according to IEC 60318-8 for deep insert hearing aids, d) the addition of measurements of the performance of hearing aids for production, supply and delivery quality assurance purposes, e) corrected and updated measurement configuration and methods, adding the use of a sequential measurement as preferred configuration, f) updated and expanded measurement procedures for the non-acoustic inputs of the hearing aid.
- Standard77 pagesEnglish languagesale 10% offe-Library read for1 day
This document describes the methods that are available to perform a spectral analysis of a pavement surface profile. It specifies a method for performing spatial frequency analysis (or texture wavelength analysis) of two-dimensional surface profiles that describe the pavement texture amplitude as a function of the distance along a straight or curved trajectory over the pavement. It also details an alternative (non-preferred) method to obtain these spectra: a) constant-percentage bandwidth obtained by digital filtering (normative method); b) constant narrow bandwidth frequency analysis by means of discrete Fourier transform (DFT), followed by a transformation of the narrow-band spectrum to an octave- or one-third-octave-band spectrum (informative). The result of the frequency analysis will be a spatial frequency (or texture wavelength) spectrum in constant-percentage bandwidth bands of octave or one-third-octave bandwidth. The objective of this document is to standardize the spectral characterization of pavement surface profiles. This objective is pursued by providing a detailed description of the analysis methods and related requirements for those who are involved in pavement characterization but are not familiar with general principles of frequency analysis of random signals. These methods and requirements are generally applicable to all types of random signals; however, they are elaborated in this document for their use in pavement surface profile analysis. NOTE The spectral analysis as specified in this document cannot express all characteristics of the surface profile under study. In particular, the effects of asymmetry of the profile, e.g. the difference of certain functional qualities for “positive” and “negative” profiles cannot be expressed by the power spectral density, as it disregards any asymmetry of the signal (see Annex B).
- Standard35 pagesEnglish languagesale 15% off
- Standard37 pagesFrench languagesale 15% off
IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry.
Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field.
Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.
- Standard65 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment7 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment7 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry. Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field. Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.
- Standard65 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment9 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies an engineering method for the measurement of sound pressure levels in rooms from service equipment installed in the building.
This document covers specifically measurements of sound from sanitary installations, mechanical ventilation, heating and cooling service equipment, lifts, rubbish chutes, heating devices, blowers, pumps and other auxiliary service equipment, and motor driven car park doors. It can also be applied to measurements of sounds from other types of equipment or activities within the building, e.g. noise from sport facilities or restaurants.
The measurement of noise from external sound sources generating air-borne or ground-borne noise in the building are not included in this document.
The methods are suitable for rooms with volumes of approximately 300 m3 or less for instance, in dwellings, hotels, schools, offices and hospitals.
The methods are not intended for measurements in large auditoria or concert halls.
- Standard29 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard2 pagesEnglish languagesale 15% off
IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry.
Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field.
Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.
- Standard126 pagesEnglish and French languagesale 15% off
IEC 60704-2-14:2013 specifies the measuring conditions to provide for sufficient accuracy in determining the noise emitted and comparing the results of measurements taken by different laboratories, whilst simulating as far as possible the practical use of household refrigerators, frozen-food storage cabinets and food freezers. It is recommended to consider the determination of noise levels as part of a comprehensive testing procedure covering many aspects of the properties and performance of household refrigerators, frozen-food storage cabinets and food freezers. This edition includes the following significant technical changes with respect to the previous edition:
a) the description of an appropriate test enclosure has been removed from this part of IEC 60704 and has been incorporated into Part 1 of IEC 60704-1;
b) the values of standard deviations of sound power levels determined according to this part of IEC 60704 have been added.
This publication is to be read in conjunction with IEC 60704-1:2010.
- Standard14 pagesEnglish languagesale 15% off
- Standard28 pagesEnglish and French languagesale 15% off
- Standard59 pagesEnglish and French languagesale 15% off
- Standard62 pagesEnglish and French languagesale 15% off
- Standard9 pagesEnglish and French languagesale 15% off
This document specifies an engineering method for the measurement of sound pressure levels in rooms from service equipment installed in the building. This document covers specifically measurements of sound from sanitary installations, mechanical ventilation, heating and cooling service equipment, lifts, rubbish chutes, heating devices, blowers, pumps and other auxiliary service equipment, and motor driven car park doors. It can also be applied to measurements of sounds from other types of equipment or activities within the building, e.g. noise from sport facilities or restaurants. The measurement of noise from external sound sources generating air-borne or ground-borne noise in the building are not included in this document. The methods are suitable for rooms with volumes of approximately 300 m3 or less for instance, in dwellings, hotels, schools, offices and hospitals. The methods are not intended for measurements in large auditoria or concert halls.
- Standard20 pagesEnglish languagesale 15% off
- Standard22 pagesFrench languagesale 15% off
IEC TS 63001:2024 is available as IEC TS 63001:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TS 63001:2024 provides a technique of measurement and evaluation of ultrasound in liquids for use in cleaning devices, equipment, and ultrasonic reactors. It specifies
- the cavitation measurement at frequencies between harmonics of the operating frequency f0,
- the cavitation measurement derived by integrating broadband cavitation noise energy,
- the cavitation measurement by extraction of broadband spectral components.
This document covers the measurement and evaluation of cavitation, but not its secondary effects (cleaning results, sonochemical effects, etc.). Further details regarding the generation of cavitation noise in ultrasonic baths and ultrasonic reactors are provided in Annex A.
IEC TS 63001:2024 cancels and replaces the first edition published in 2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of a new method of measurement: the measurement of integrated broadband cavitation energy between two frequency bounds.
- Technical specification36 pagesEnglish languagesale 15% off
- Technical specification85 pagesEnglish languagesale 15% off
This part of IEC 60704 applies to electric fan heaters, designed for placing on the floor, table
or counter, etc., or for mounting.
This document does not apply to
– electric storage room heaters;
– room humidifiers;
– room dehumidifiers;
– air cleaners;
– heaters designed exclusively for industrial purposes.
For determining and verifying noise emission values declared in product specifications, refer
to IEC 60704-3:2019.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies methods for measuring the airborne noise emitted by small air-moving devices (AMDs), such as those used for cooling electronic, electrical, and mechanical equipment where the sound power level of the AMD is of interest. Examples of these AMDs include propeller fans, tube-axial fans, vane-axial fans, centrifugal fans, motorized impellers, and their variations. This document describes the test apparatus and methods for determining the airborne noise emitted by small AMDs as a function of the volume flow rate and the fan static pressure developed by the AMD on the test apparatus. It is intended for use by AMD manufacturers, by manufacturers who use AMDs for cooling electronic equipment and similar applications, and by testing laboratories. It provides a method for AMD manufacturers, equipment manufacturers and testing laboratories to obtain comparable results. Results of measurements made in accordance with this document are expected to be used for engineering information and performance verification, and the methods can be cited in purchase specifications and contracts between buyers and sellers. The ultimate purpose of the measurements is to provide data to assist the designers of electronic, electrical or mechanical equipment which contains one or more AMDs. Based on experimental data, a method is given for calculating the maximum volume flow rate of the scaled plenum up to which this document is applicable.
- Standard39 pagesEnglish languagesale 15% off
IEC 60704-2-2:2023 is available as IEC 60704-2-2:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60704-2-2:2023 applies to electric fan heaters, designed for placing on the floor, table or counter, etc., or for mounting. This document does not apply to: - electric storage room heaters; - room humidifiers; - room dehumidifiers; - air cleaners; - heaters designed exclusively for industrial purposes. For determining and verifying noise emission values declared in product specifications, refer to IEC 60704-3:2019. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - alignment with the latest edition of IEC 60704-1:2021, - addition of several ISO standards, - revision of built-in-conditions, - addition of requirements on climatic conditions and on background noise. This part 2-2 is intended to be used in conjunction with the fourth edition of IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements. This part 2-2 supplements or modifies the corresponding clauses in IEC 60704-1:2021.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for evaluating the working life of Noise Reducing Devices used alongside roads according to the relevant exposure conditions.
It also specifies a method for determining the acoustic characteristic at the end of the working life.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
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+ j t time convention is used.
- Standard39 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies an engineering method for calculating the attenuation of sound during propagation outdoors in order to predict the levels of environmental noise at a distance from a variety of sources. The method predicts the equivalent continuous A-weighted sound pressure level (as described in ISO 1996-series) under meteorological conditions favourable to propagation from sources of known sound emission. These conditions are for downwind propagation or, equivalently, propagation under a well-developed moderate ground‑based temperature inversion, such as commonly occurs in clear, calm nights. Inversion conditions over extended water surfaces are not covered and may result in higher sound pressure levels than predicted from this document (see e.g. References [11] and [12]). The method also predicts a long-term average A‑weighted sound pressure level as specified in ISO 1996-1 and ISO 1996-2. The long-term average A‑weighted sound pressure level encompasses levels for a wide variety of meteorological conditions. Guidance has been provided to derive a meteorological correction based on the angular wind distribution relevant for the reference or long-term time interval as specified in ISO 1996-1:2016, 3.2.1 and 3.2.2. Examples for reference time intervals are day, night, or the hour of the night with the largest value of the sound pressure level. Long-term time intervals over which the sound of a series of reference time intervals is averaged or assessed representing a significant fraction of a year (e.g. 3 months, 6 months or 1 year). The method specified in this document consists specifically of octave band algorithms (with nominal mid-band frequencies from 63 Hz to 8 kHz) for calculating the attenuation of sound which originates from a point sound source, or an assembly of point sources. The source (or sources) may be moving or stationary. Specific terms are provided in the algorithms for the following physical effects: — geometrical divergence; — atmospheric absorption; — ground effect; — reflection from surfaces; — screening by obstacles. Additional information concerning propagation through foliage, industrial sites and housing is given in Annex A. The directivity of chimney-stacks to support the sound predictions for industrial sites has been included with Annex B. An example how the far-distance meteorological correction C0 can be determined from the local wind-climatology is given in Annex C. Experiences of the last decades how to predict the sound pressure levels caused by wind turbines is summarized in Annex D. The method is applicable in practice to a great variety of noise sources and environments. It is applicable, directly, or indirectly, to most situations concerning road or rail traffic, industrial noise sources, construction activities, and many other ground-based noise sources. It does not apply to sound from aircraft in flight, or to blast waves from mining, military, or similar operations. To apply the method of this document, several parameters need to be known with respect to the geometry of the source and of the environment, the ground surface characteristics, and the source strength in terms of octave band sound power levels for directions relevant to the propagation. If only A‑weighted sound power levels of the sources are known, the attenuation terms for 500 Hz may be used to estimate the resulting attenuation. The accuracy of the method and the limitations to its use in practice are described in Clause 9.
- Standard46 pagesEnglish languagesale 15% off
This document specifies the laboratory method for measuring the airborne sound insulation performance of railway noise barriers in reverberant conditions. It covers the assessment of the intrinsic performance of noise barriers and related devices acting on airborne sound propagation that can reasonably be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4.
This method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise barriers to be installed on railway in non-reverberant conditions.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on-board devices, are out of the scope of this European standard.
- Standard21 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the laboratory method for measuring the sound absorption performance of railway noise barriers and related devices acting on airborne sound propagation in reverberant conditions. It covers the assessment of the intrinsic sound absorption performance of devices that can reasonably be assembled inside the testing facility described in EN ISO 354.
This method is not intended for the determination of the intrinsic characteristics of sound absorption of noise barriers and related devices acting on airborne sound propagation to be installed on railways in non-reverberant conditions.
The test method in EN ISO 354 referred to in this European Standard excludes devices that act as weakly damped resonators. Some devices will depart significantly from these requirements and in these cases, care is needed in interpreting the results.
- Standard29 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines the acoustic performance of four classes (Classes A, B, C and D) of pipe insulation. It also defines a standardized test method for measuring the acoustic performance of any type of material system construction, thereby allowing existing and new insulation constructions to be rated against the four classes. Furthermore, this document presents some typical types of construction that would be expected to meet these acoustic performance classes. This document is applicable to the acoustic insulation of cylindrical steel pipes and to their piping components. It is valid for pipes up to 1 m in diameter and a minimum wall thickness of 4,2 mm for diameters below 300 mm, and 6,3 mm for diameters from 300 mm and above. It is not applicable to the acoustic insulation of rectangular ducting and vessels or machinery. This document covers both design and installation aspects of acoustic insulation and provides guidance to assist noise control engineers in determining the required class and extent of insulation needed for a particular application. It gives typical examples of construction methods, but the examples are for information only and not meant to be prescriptive. This document emphasises the aspects of acoustic insulation that are different from those of thermal insulation, serving to guide both the installer and the noise control engineer. Details of thermal insulation are beyond the scope of this document.
- Standard42 pagesEnglish languagesale 15% off
- Standard43 pagesFrench languagesale 15% off
IEC 60704-2-2:2023 is available as IEC 60704-2-2:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60704-2-2:2023 applies to electric fan heaters, designed for placing on the floor, table or counter, etc., or for mounting. This document does not apply to:
- electric storage room heaters;
- room humidifiers;
- room dehumidifiers;
- air cleaners;
- heaters designed exclusively for industrial purposes.
For determining and verifying noise emission values declared in product specifications, refer to IEC 60704-3:2019. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- alignment with the latest edition of IEC 60704-1:2021,
- addition of several ISO standards,
- revision of built-in-conditions,
- addition of requirements on climatic conditions and on background noise.
This part 2-2 is intended to be used in conjunction with the fourth edition of IEC 60704-1:2021, Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements.
This part 2-2 supplements or modifies the corresponding clauses in IEC 60704-1:2021.
- Standard40 pagesEnglish languagesale 15% off
- Standard58 pagesEnglish languagesale 15% off
- Standard98 pagesEnglish languagesale 15% off
- Standard98 pagesEnglish languagesale 15% off
- Standard25 pagesEnglish and French languagesale 15% off
This document specifies a measurement method and conditions to obtain reproducible and comparable sound reduction indices of all kinds of rail bound vehicles’ gangway systems as defined in EN 16286 1. The setup includes all components of the system mounted like this is done between two adjacent car bodies within the train, so that a person will be able to use the gangway system, consisting of e.g.:
- the bridge system (footplate);
- side panels;
- flexible components (bellows);
- mounting systems;
- elements to couple parts in the case of separable gangway systems.
The method is applicable to type testing of gangways.
This method is not applicable to:
- interior noise measurements in vehicles;
- structure borne noise measurements.
The type testing procedures specified in this document are of engineering grade (grade 2) in the frequency range from 100 Hz up to 5 000 Hz.
NOTE This is the preferred range for noise declaration purposes, as defined in EN ISO 12001. If test conditions are relaxed, the results are no longer of engineering grade (grade 2).
- Standard27 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for railway noise barriers: the sound insulation index.
The test method is intended for the following applications:
- determination of the intrinsic characteristics of airborne sound insulation of noise barriers to be installed along railways, to be measured either on typical installations alongside railways or on a relevant sample section;
- determination of the in situ intrinsic characteristics of airborne sound insulation of noise barriers in actual use;
- comparison of design specifications with actual performance data after the completion of the construction work;
- verification of the long term performance of noise barriers (with a repeated application of the method);
- interactive design process of new products, including the formulation of installation manuals.
The test method is not intended for the following applications:
- determination of the intrinsic characteristics of airborne sound insulation of noise barriers to be installed in reverberant conditions, e.g. inside tunnels or deep trenches or under covers.
Results are expressed as a function of frequency in one-third octave bands, where possible, between 100 Hz and 5 kHz. If it is not possible to get valid measurement results over the whole frequency range indicated, the results will be given in a restricted frequency range and the reasons for the restriction(s) will be clearly reported.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on board devices are out of the scope of this European Standard.
- Standard57 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard describes a test method for measuring a quantity representative of the intrinsic characteristics of sound reflection from railway noise barriers and related devices acting on airborne sound propagation, the sound reflection index.
The test method is intended for the following applications:
- determination of the intrinsic characteristics of sound reflection of noise barriers and related devices acting on airborne sound propagation to be installed along railways, to be measured either on typical installations alongside railways or on a relevant sample section;
- determination of the in situ intrinsic characteristics of sound reflection of noise barriers and related devices acting on airborne sound propagation in actual use;
- comparison of design specifications with actual performance data after the completion of the construction work;
- verification of the long term performance of noise barriers and related devices acting on airborne sound propagation (with a repeated application of the method).
The test method is not intended for the following applications:
- determination of the intrinsic characteristics of sound reflection of noise barriers and related devices acting on airborne sound propagation to be installed in reverberant conditions, e.g. inside tunnels or deep trenches.
Results for the sound reflection index are expressed as a function of frequency, in one-third octave bands, where possible, between 100 Hz and 5 kHz. If it is not possible to get valid measurements results over the whole frequency range indicated, the results should be given in a restricted frequency range and the reasons of the restriction(s) should be clearly reported.
- Standard68 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60704-2-13:2023 applies to cooking fume extractors for household and similar use intended for filtering the air of a room or for exhausting the air out of a room, including their accessories and their component parts. It also applies to cooking fume extractors where the fan is mounted separately from the appliance inside or outside of the room where the appliance is located, but controlled by the appliance when the fan is defined in the technical documentation. This document deals also with down-draft systems that are arranged beside, behind or under the cooking appliance.
Measurements carried out in accordance with this document determine the noise emission into the room, from which cooking fumes are extracted. Noise emission to the outside (e.g. through air ducts) are not considered.
This fourth edition cancels and replaces the third edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment with IEC 61591:2023;
b) change of title, scope and definitions 3.103 and 3.104: this document deals with cooking fume extractors (this covers range hoods and down-draft systems);
c) exhaust pipe of down-draft systems specified;
d) built-in range hoods in recirculation mode with an air outlet device specified;
e) alignment with IEC 60704-1:2021.
This document is to be used in conjunction with IEC 60704-1:2021.
- Standard22 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 60704-2-13:2023 applies to cooking fume extractors for household and similar use intended for filtering the air of a room or for exhausting the air out of a room, including their accessories and their component parts. It also applies to cooking fume extractors where the fan is mounted separately from the appliance inside or outside of the room where the appliance is located, but controlled by the appliance when the fan is defined in the technical documentation. This document deals also with down-draft systems that are arranged beside, behind or under the cooking appliance. Measurements carried out in accordance with this document determine the noise emission into the room, from which cooking fumes are extracted. Noise emission to the outside (e.g. through air ducts) are not considered. This fourth edition cancels and replaces the third edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment with IEC 61591:2023; b) change of title, scope and definitions 3.103 and 3.104: this document deals with cooking fume extractors (this covers range hoods and down-draft systems); c) exhaust pipe of down-draft systems specified; d) built-in range hoods in recirculation mode with an air outlet device specified; e) alignment with IEC 60704-1:2021. This document is to be used in conjunction with IEC 60704-1:2021.
- Standard22 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment3 pagesEnglish languagesale 10% offe-Library read for1 day
- Amendment3 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies a normalized railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on-board devices, are out of the scope of this European Standard.
- Standard19 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies a normalized railway noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce airborne railway noise near railways.
All noise reducing devices different from noise barriers and related devices acting on airborne sound propagation, e.g. devices for attenuation of ground borne vibration and on-board devices are out of the scope of this European Standard.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day