ISO 5136:2003
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Current
The latest, up-to-date edition.
Acoustics — Determination of sound power radiated into a duct by fans and other air-moving devices — In-duct method
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Language(s)
English, French
Published date
31-03-2003
ISO 5136 specifies a method for testing ducted fans and other air-moving devices to determine the sound power radiated into an anechoically terminated duct on the inlet and/or outlet side of the equipment.
The method is applicable to fans which emit steady, broad-band, narrow-band and discrete-frequency sound and to air temperatures between - 50 °C and + 70 °C. The test duct diameter range is from 0,15 m to 2 m. Test methods for small (d < 0,15 m) and large (d > 2 m) test ducts are described in the informative annexes H and I, respectively.
The maximum mean flow velocity at the microphone head for which the method is suitable, depends on the type of microphone shield used, and is as follows:
foam ball 15 m/s; nose cone 20 m/s; sampling tube 40 m/s.
Above these values the suppression of turbulent pressure fluctuations by the microphone shield may be insufficient.
The method described in ISO 5136 is applicable to a sound source in which a fan is connected to ducts on at least one side. It is also applicable to other fan/attenuator combinations or equipment incorporating fans which can be considered as "black boxes".
Examples of fans and other equipment covered by ISO 5136 are
ducted centrifugal fans, ducted axial flow fans, ducted mixed-flow fans, ducted air-handling units, ducted dust-collection units, ducted air-conditioning units, and ducted furnaces.
ISO 5136 is also applicable to other aerodynamic sources such as boxes, dampers and throttle devices provided that a quiet air flow delivered by an auxiliary fan is available, and the signal-to-noise ratio of sound pressures to turbulent pressure fluctuations in the test duct is at least 6 dB.
It is not applicable to non-ducted fans or equipment.
| Committee |
ISO/TC 43/SC 1
|
| DevelopmentNote |
Supersedes ISO/DIS 5136 (04/2003)
|
| DocumentType |
Standard
|
| Pages |
68
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NF EN ISO 5136 : 2009 | Identical |
| NBN EN ISO 5136 : 2009 | Identical |
| NEN EN ISO 5136 : 2009 | Identical |
| NEN ISO 5136 : 1994 | Identical |
| NS EN ISO 5136 : 2009 | Identical |
| I.S. EN ISO 5136:2009 | Identical |
| PN EN ISO 5136 : 2009 | Identical |
| SAC GB/T 17697 : 1999 | Identical |
| SNV NF EN 25136 : 1994 | Identical |
| SN EN ISO 5136 : 2010 | Identical |
| UNI EN ISO 5136 : 2009 | Identical |
| UNE-EN ISO 5136:2010 | Identical |
| BS EN ISO 5136:2009 | Identical |
| UNE-EN 25136:1995 | Identical |
| EN ISO 5136:2009 | Identical |
| DIN EN 25136:1994-02 | Identical |
| DIN EN ISO 5136:2009-11 | Identical |
| UNE-EN ISO 5136:2004 | Identical |
| DIN 45635-9:1989-12 | Similar to |
| BS 848-2:1985 | Similar to |
| I.S. EN 25136:1994 | Identical |
| NS ISO 5136 : 1ED 1994 | Identical |
| EN 25136 : 1993 | Identical |
| BS EN 25136:1994 | Identical |
| 17/30332536 DC : 0 | BS EN 13141-5 - VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 5: COWLS AND ROOF OUTLET TERMINAL DEVICES |
| UNI ISO 13347-3 : 2009 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 3: ENVELOPING SURFACE METHODS |
| BS ISO 13347-3 : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 3: ENVELOPING SURFACE METHOD |
| DIN EN 13141-11:2015-07 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 11: SUPPLY VENTILATION UNITS |
| BS 848-2.3(2004) : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 3: ENVELOPING SURFACE METHODS |
| BS 848-2.2(2004) : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 2: REVERBERANT ROOM METHOD |
| BS 848-2.1(2004) : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 1: GENERAL OVERVIEW |
| UNE-EN 13141-11:2015 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 11: Supply ventilation units |
| UNI EN 13141-7 : 2011 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 7: PERFORMANCE TESTING OF A MECHANICAL SUPPLY AND EXHAUST VENTILATION UNITS (INCLUDING HEAT RECOVERY) FOR MECHANICAL VENTILATION SYSTEMS INTENDED FOR SINGLE FAMILY DWELLINGS |
| EN 13141-11:2015 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 11: Supply ventilation units |
| EN 12354-5:2009/AC:2010 | BUILDING ACOUSTICS - ESTIMATION OF ACOUSTIC PERFORMANCE OF BUILDING FROM THE PERFORMANCE OF ELEMENTS - PART 5: SOUNDS LEVELS DUE TO THE SERVICE EQUIPMENT |
| BS EN ISO 7235:2009 | Acoustics. Laboratory measurement procedures for ducted silencers and air-terminal units. Insertion loss, flow noise and total pressure loss |
| I.S. EN 12354-5:2009 | BUILDING ACOUSTICS - ESTIMATION OF ACOUSTIC PERFORMANCE OF BUILDING FROM THE PERFORMANCE OF ELEMENTS - PART 5: SOUNDS LEVELS DUE TO THE SERVICE EQUIPMENT |
| I.S. EN 16475-2:2017 | CHIMNEYS - ACCESSORIES - PART 2: CHIMNEY FANS - REQUIREMENTS AND TEST METHODS |
| 01/562316 DC : DRAFT JULY 2001 | BS EN ISO 7235 ACOUSTICS - LABORATORY MEASUREMENT PROCEDURES FOR DUCTED SILENCERS AND AIR-TERMINAL UNITS - INSERTION LOSS, FLOW NOISE AND TOTAL PRESSURE LOSS |
| BS 848-9:2006 | Fans for general purposes Tolerances, methods of conversion and technical data presentation |
| 13/30267124 DC : 0 | BS EN 13141-11 - VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 11: POSITIVE PRESSURE VENTILATION SYSTEMS |
| DIN EN 13141-11 E : 2015 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 11: SUPPLY VENTILATION UNITS |
| DIN EN 16583:2015-10 | Heat exchangers - Hydronic room fan coils units - Determination of the sound power level |
| DIN EN 16583 E : 2015 | HEAT EXCHANGERS - HYDRONIC ROOM FAN COILS UNITS - DETERMINATION OF THE SOUND POWER LEVEL |
| 02/705656 DC : DRAFT APR 2002 | BS 848-2.4 - INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVEL UNDER STANDARDIZED LABORATORY CONDITIONS - PART 4: SOUND INTENSITY METHOD |
| PREN 13141-5 : DRAFT 2017 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 5: COWLS AND ROOF OUTLET TERMINAL DEVICES |
| UNI ISO 13347-1 : 2009 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 1: GENERAL OVERVIEW |
| PREN 13053 : DRAFT 2017 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| ISO 13347-2:2004 | Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 2: Reverberant room method |
| BS ISO 13347-1 : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 1: GENERAL OVERVIEW |
| I.S. EN 16583:2015 | HEAT EXCHANGERS - HYDRONIC ROOM FAN COILS UNITS - DETERMINATION OF THE SOUND POWER LEVEL |
| I.S. EN 13053:2006 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| DIN EN 12354-5:2009-10 | Building acoustics - Estimation of acoustic performance of building from the performance of elements - Part 5: Sounds levels due to the service equipment |
| I.S. EN 13141-4:2011 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 4: FANS USED IN RESIDENTIAL VENTILATION SYSTEMS |
| I.S. EN ISO 7235:2009 | ACOUSTICS - LABORATORY MEASUREMENT PROCEDURES FOR DUCTED SILENCERS AND AIR-TERMINAL UNITS - INSERTION LOSS, FLOW NOISE AND TOTAL PRESSURE LOSS |
| DIN EN 15036-2:2006-12 | Heating boilers - Test regulations for airborne noise emissions from heat generators - Part 2: Flue gas noise emissions at the outlet of the heat generator |
| I.S. EN 13141-7:2010 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 7: PERFORMANCE TESTING OF A MECHANICAL SUPPLY AND EXHAUST VENTILATION UNITS (INCLUDING HEAT RECOVERY) FOR MECHANICAL VENTILATION SYSTEMS INTENDED FOR SINGLE FAMILY DWELLINGS |
| DIN EN 13053:2012-02 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS (INCLUDES AMENDMENT A1:2011) |
| DIN EN 13141-7:2011-01 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 7: Performance testing of a mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for single family dwellings |
| DIN EN 13141-4:2011-09 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 4: Fans used in residential ventilation systems |
| DIN EN ISO 7235:2010-01 | Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003) |
| VDI 2081 Blatt 1:2001-07 | Noise generation and noise reduction in air-conditioning systems |
| VDI 2715:2011-11 | Noise control in heating systems |
| BS 848-9:2007 | Fans for general purposes. Tolerances, methods of conversion and technical data presentation |
| EN 13141-7:2010 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 7: Performance testing of a mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for single family dwellings |
| BS EN ISO 5801:2017 | Fans. Performance testing using standardized airways |
| EN ISO 5801:2017 | Fans - Performance testing using standardized airways (ISO 5801:2017) |
| BS ISO 13347-2:2004 | Industrial fans. Determination of fan sound power levels under standardized laboratory conditions Reverberant room method |
| UNE-EN 16583:2016 | Heat exchangers - Hydronic room fan coils units - Determination of the sound power level |
| BS EN 13053 : 2006 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| EN 15036-2:2006 | Heating boilers - Test regulations for airborne noise emissions from heat generators - Part 2: Flue gas noise emissions at the outlet of the heat generator |
| UNI EN ISO 7235 : 2009 | ACOUSTICS - LABORATORY MEASUREMENT PROCEDURES FOR DUCTED SILENCERS AND AIR- TERMINAL UNITS - INSERTION LOSS, FLOW NOISE AND TOTAL PRESSURE LOSS |
| UNI EN 12354-5 : 2009 | BUILDING ACOUSTICS - ESTIMATION OF ACOUSTIC PERFORMANCE OF BUILDING FROM THE PERFORMANCE OF ELEMENTS - PART 5: SOUNDS LEVELS DUE TO THE SERVICE EQUIPMENT |
| EN 13141-4:2011 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 4: Fans used in residential ventilation systems |
| ISO 5801:2017 | Fans — Performance testing using standardized airways |
| DIN EN 16475-2 E : 2017 | CHIMNEYS - ACCESSORIES - PART 2: CHIMNEY FANS - REQUIREMENTS AND TEST METHODS |
| BS EN 13141-11:2015 | Ventilation for buildings. Performance testing of components/products for residential ventilation Supply ventilation units |
| DIN EN 16475-2:2013-08 (Draft) | CHIMNEYS - ACCESSORIES - PART 2: CHIMNEY FANS - REQUIREMENTS AND TEST METHODS |
| 13/30279269 DC : 0 | BS EN 16583 - HEAT EXCHANGERS - HYDRONIC ROOM FAN COILS UNITS - DETERMINATION OF THE SOUND POWER LEVEL |
| BS EN 16583:2015 | Heat exchangers. Hydronic room fan coils units. Determination of the sound power level |
| 08/30183867 DC : DRAFT AUG 2008 | BS EN 13141-7 - VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 7: PERFORMANCE TESTING OF A MECHANICAL SUPPLY AND EXHAUST VENTILATION UNITS (INCLUDING HEAT RECOVERY) FOR MECHANICAL VENTILATION SYSTEMS INTENDED FOR SINGLE FAMILY DWELLINGS |
| 02/705655 DC : DRAFT APR 2002 | BS 848-2.3 - INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVEL UNDER STANDARDIZED LABORATORY CONDITIONS - PART 3: ENVELOPING SURFACE METHODS |
| 14/30284736 DC : 0 | BS EN ISO 5801 - FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS |
| 03/316891 DC : DRAFT OCT 2003 | EN 13053 - VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATINGS AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| 95/704659 DC : DRAFT MAR 1995 | PREN 1872 - MACHINES FOR UNDERGROUND MINES - SAFETY REQUIREMENTS FOR MINING VENTILATION MACHINERY - ELECTRICALLY DRIVEN FANS FOR UNDERGROUND USE |
| I.S. EN 13141-11:2015 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 11: SUPPLY VENTILATION UNITS |
| ISO 13348:2007 | Industrial fans — Tolerances, methods of conversion and technical data presentation |
| 17/30339487 DC : 0 | BS EN 13053 - VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| ISO 13347-3:2004 | Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 3: Enveloping surface methods |
| BS EN 15036-2:2006 | Heating boilers. Test regulations for airborne noise emissions from heat generators Flue gas noise emissions at the outlet of the heat generator |
| UNI EN 13053 : 2011 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| UNE-EN ISO 7235:2010 | Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003) |
| ISO 7235:2003 | Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss |
| BS EN 12354-5:2009 | Building acoustics. Estimation of acoustic performance of building from the performance of elements Sounds levels due to the service equipment |
| ISO 13347-4:2004 | Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 4: Sound intensity method |
| BS EN 13141-4:2011 | Ventilation for buildings. Performance testing of components/products for residential ventilation Fans used in residential ventilation systems |
| ONORM EN 13053 : 2011 | VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - RATING AND PERFORMANCE FOR UNITS, COMPONENTS AND SECTIONS |
| BS EN ISO 11820:1997 | Acoustics. Measurements on silencers in situ |
| BS 848-2.4(2004) : 2004 | INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 4: SOUND INTENSITY METHOD |
| UNE-EN 13141-4:2012 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 4: Fans used in residential ventilation systems |
| EN 16583:2015 | Heat exchangers - Hydronic room fan coils units - Determination of the sound power level |
| EN ISO 7235:2009 | Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003) |
| EN 16475-2:2017 | Chimneys - Accessories - Part 2: Chimney fans - Requirements and test methods |
| BS EN 16475-2:2017 | Chimneys. Accessories Chimney fans. Requirements and test methods |
| I.S. EN 12102-1:2017 | AIR CONDITIONERS, LIQUID CHILLING PACKAGES, HEAT PUMPS, PROCESS CHILLERS AND DEHUMIDIFIERS WITH ELECTRICALLY DRIVEN COMPRESSORS - DETERMINATION OF THE SOUND POWER LEVEL - PART 1: AIR CONDITIONERS, LIQUID CHILLING PACKAGES, HEAT PUMPS FOR SPACE HEATING AND COOLING, DEHUMIDIFIERS AND PROCESS CHILLERS |
| I.S. EN ISO 5801:2017 | FANS - PERFORMANCE TESTING USING STANDARDIZED AIRWAYS (ISO 5801: 2017) |
| EN 12102-1:2017 | Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors - Determination of the sound power level - Part 1: Air conditioners, liquid chilling packages, heat pumps for space heating and cooling, dehumidifiers and process chillers |
| ISO 13347-1:2004 | Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 1: General overview |
| EN 13053:2006+A1:2011 | Ventilation for buildings - Air handling units - Rating and performance for units, components and sections |
| UNI EN 13141-4 : 2011 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 4: FANS USED IN RESIDENTIAL VENTILATION SYSTEMS |
| UNE-EN 13141-7:2011 | Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 7: Performance testing of a mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for single family dwellings |
| UNE-EN 13053:2007 | Ventilation for buildings - Air handling units - Rating and performance for units, components and sections |
| BS EN 13141-7:2010 | Ventilation for buildings. Performance testing of components/products for residential ventilation Performance testing of a mechanical supply and exhaust ventilation units (including heat recovery) for mechanical ventilation systems intended for single family dwellings |
| BS ISO 13347-4:2004 | Industrial fans. Determination of fan sound power levels under standardized laboratory conditions Sound intensity method |
| ONORM EN 13141-4 : 2011 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 4: FANS USED IN RESIDENTIAL VENTILATION SYSTEMS |
| ONORM EN 13141-7 : 2010 | VENTILATION FOR BUILDINGS - PERFORMANCE TESTING OF COMPONENTS/PRODUCTS FOR RESIDENTIAL VENTILATION - PART 7: PERFORMANCE TESTING OF A MECHANICAL SUPPLY AND EXHAUST VENTILATION UNITS (INCLUDING HEAT RECOVERY) FOR MECHANICAL VENTILATION SYSTEMS INTENDED FOR SINGLE FAMILY DWELLINGS |
| ISO 3744:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane |
| ISO 3743-2:1994 | Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms |
| ISO 7574-4:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines |
| IEC 60942:2003 | Electroacoustics - Sound calibrators |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| ISO 3740:2000 | Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards |
| ISO 7574-1:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions |
| ISO 5801:2017 | Fans — Performance testing using standardized airways |
| ISO 3746:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane |
| ISO 7574-3:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 3: Simple (transition) method for stated values for batches of machines |
| ISO 3741:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms |
| ISO 7235:2003 | Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss |
| ISO 3745:2012 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms |
| 1998/37/EC : 1998 | DIRECTIVE 98/37/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 22 JUNE 1998 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO MACHINERY |
| IEC 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| IEC 60651:1979+AMD1:1993+AMD2:2000 CSV | Sound level meters |
| ISO 3743-1:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room |
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