ISO 26101:2017
Withdrawn
View Superseded by
Acoustics — Test methods for the qualification of free-field environments
Hardcopy , PDF
English
04-25-2017
04-09-2025
ISO 26101:2017 specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field.
ISO 26101:2017 specifies discrete-frequency and broad-band test methods for quantifying the performance of anechoic and hemi-anechoic spaces, defines the qualification procedure for an omni-directional sound source suitable for free-field qualification, gives details of how to present the results and describes uncertainties of measurement.
ISO 26101:2017 has been developed for qualifying anechoic and hemi-anechoic spaces for a variety of acoustical measurement purposes. It is expected that, over time, various standards and test codes will refer to this document in order to qualify an anechoic or hemi-anechoic space for a particular measurement.
In the absence of specific requirements or criteria, Annex A provides qualification criteria and measurement requirements to qualify anechoic and hemi-anechoic spaces for general purpose acoustical measurements.
ISO 26101:2017 describes the divergence loss method for measuring the free sound field performance of an acoustic environment.
| Committee |
ISO/TC 43/SC 1
|
| DevelopmentNote |
Supersedes ISO/DIS 26101. (04/2017)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| NEN ISO 26101 : 2012 | Identical |
| BS ISO 26101:2017 | Identical |
| GOST R ISO 26101 : 2014 | Identical |
| ASA/ANSI S12.79-2021 / ISO 26101:2017 | Identical |
| NF ISO 26101 : 2012 | Identical |
| BS EN 61672-2 : 2013 | ELECTROACOUSTICS - SOUND LEVEL METERS - PART 2: PATTERN EVALUATION TESTS |
| CEI EN 61672-2 : 2014 | ELECTROACOUSTICS - SOUND LEVEL METERS - PART 2: PATTERN EVALUATION TESTS |
| ANSI/ASA S1.4 PART 2 : 2014 | ELECTROACOUSTICS - SOUND LEVEL METERS - PART 2: PATTERN EVALUATION TESTS |
| EN 61094-8:2012/AC:2013 | Measurement microphones — Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison |
| 13/30266712 DC : 0 | BS ISO 16254 - MEASUREMENT OF MINIMUM NOISE EMITTED BY ROAD VEHICLES |
| SAE J2889/1_201511 | Measurement of Minimum Noise Emitted by Road Vehicles |
| 15/30263133 DC : 0 | BS ISO 14878 - CYCLES - AUDIO WARNING DEVICES - TECHNICAL SPECIFICATION AND TEST METHODS |
| 14/30270415 DC : 0 | BS ISO 362-3 - EASUREMENT OF NOISE EMITTED BY ACCELERATING ROAD VEHICLES - ENGINEERING METHOD - PART 3: INDOOR TESTING M AND N CATEGORIES |
| 15/30289129 DC : 0 | BS EN ISO 3745:2012/AMD 1 - 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 |
| I.S. EN 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 (ISO 3745:2012) |
| BS EN 61094-8:2012 | Electroacoustics. Measurement microphones Methods for determining the free-field sensitivity of working standard microphones by comparison |
| BS ISO 16254:2016 | Acoustics. Measurement of sound emitted by road vehicles of category M and N at standstill and low speed operation. Engineering method |
| ISO 16254:2016 | Acoustics — Measurement of sound emitted by road vehicles of category M and N at standstill and low speed operation — Engineering method |
| I.S. EN 61672-2:2013 | ELECTROACOUSTICS - SOUND LEVEL METERS - PART 2: PATTERN EVALUATION TESTS |
| 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 |
| BS ISO 14878:2015 | Cycles. Audible warning devices. Technical specification and test methods |
| CEI EN 61094-8 : 2013 | ELECTROACOUSTICS - MEASUREMENT MICROPHONES - PART 8: METHODS FOR FREE-FIELD CALIBRATION OF WORKING STANDARD MICROPHONES BY COMPARISON |
| BS ISO 362-3:2016 | Measurement of noise emitted by accelerating road vehicles. Engineering method Indoor testing M and N categories |
| MIL-STD-1474 Revision E:2015 | Noise Limits |
| IEC 61094-8:2012 | Measurement microphones - Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison |
| ISO 14878:2015 | Cycles — Audible warning devices — Technical specification and test methods |
| I.S. EN 61094-8:2012 | MEASUREMENT MICROPHONES - PART 8: METHODS FOR DETERMINING THE FREE-FIELD SENSITIVITY OF WORKING STANDARD MICROPHONES BY COMPARISON (IEC 61094-8:2012 (EQV)) |
| ISO 362-3:2016 | Measurement of noise emitted by accelerating road vehicles — Engineering method — Part 3: Indoor testing M and N categories |
| ANSI S12.55 : 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 |
| BS EN 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 |
| IEC 61672-2:2013+AMD1:2017 CSV | Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests |
| EN 61672-2:2013/A1:2017 | ELECTROACOUSTICS - SOUND LEVEL METERS - PART 2: PATTERN EVALUATION TESTS (IEC 61672-2:2013/A1:2017) |
| UNE-EN 61094-8:2013 | Measurement microphones. Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison |
| UNE-EN 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 (ISO 3745:2012) |
| ISO/TR 25417:2007 | Acoustics — Definitions of basic quantities and terms |
| IEC 61094-4:1995 | Measurement microphones - Part 4: Specifications for working standard microphones |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| AS 5336:2019 | 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 |
| ISO 9613-1:1993 | Acoustics — Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere |
| IEC 61260-1:2014 | Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications |
| ISO 10140-5:2010 | Acoustics — Laboratory measurement of sound insulation of building elements — Part 5: Requirements for test facilities and equipment |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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