ANSI S12.55 : 2012
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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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
Hardcopy , PDF
English
01-01-2012
13-07-2019
1 Scope
2 Normative references
3 Terms and definitions
4 Reference meteorological conditions
5 Test rooms
6 Instrumentation
7 Definition, location, installation and operation
of noise source under test
8 Measurement surface
9 Determination of sound power levels and sound
energy levels
10 Measurement uncertainty
11 Information to be recorded
12 Test report
Annex A (normative) - General procedures for
qualification of anechoic and hemi-anechoic
rooms
Annex B (normative) - Qualification procedure for
spaces within test rooms used in the
determination sound power levels and
sound energy levels of specific noise
sources
Annex C (normative) - Calculation of A-weighted
sound power levels and A-weighted sound
energy levels from one-third-octave band
levels
Annex D (normative) - Array of microphone positions
on a spherical measurement surface in
a free field
Annex E (normative) - Arrays of microphone positions
on a hemispherical measurement surface in
hemi-free field
Annex F (normative) - Coaxial circular paths of
microphones on a hemispherical measurement
surface a hemi-free field
Annex G (normative) - Meridional paths of microphones
on a hemispherical measurement surface
in hemi-free field
Annex H (normative) - Spiral paths of microphones on
a hemispherical measurement surface
in a hemi-free field
Annex I (informative) - Guidance on the development
of information on measurement uncertainty
Bibliography
Defines methods for measuring the sound pressure levels on a measurement surface enveloping a noise source (machinery or equipment) in an anechoic room or a hemi-anechoic room.
| Committee |
S12
|
| DevelopmentNote |
Supersedes ANSI S12.35 (07/2006) Also numbered as ISO 3745. (11/2012) NEW CHILD AMD 1 2021 IS NOW ADDED
|
| DocumentType |
Revision
|
| Pages |
88
|
| ProductNote |
NEW CHILD AMD 1 2021 IS NOW ADDED
|
| PublisherName |
Acoustical Society of America
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| AHRI 530 : 2005 | RATING OF SOUND AND VIBRATION FOR REFRIGERANT COMPRESSORS |
| ANSI S12.69 : 2010 | PROCEDURE FOR TESTING RAILROAD HORNS EX SITU |
| ASA/ANSI S12.10 PART 2:2011(R2020) | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 2: DECLARATION OF NOISE EMISSION LEVELS |
| ANSI/ASA S12.10 PART 1:2010(R2020) | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 1: DETERMINATION OF SOUND POWER LEVEL AND EMISSION SOUND PRESSURE LEVEL |
| ANSI S1.17-1 : 2014 | MICROPHONE WINDSCREENS - PART 1: TEST PROCEDURES FOR MEASUREMENTS OF INSERTION LOSS IN STILL AIR |
| AHRI 250 : 2001 | PERFORMANCE AND CALIBRATION OF REFERENCE SOUND SOURCES |
| ANSI/ASA S12.10 PART 2 : 2011 | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 2: DECLARATION OF NOISE EMISSION LEVELS |
| ANSI/ASA S12.10 PART 1 : 2010 | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 1: DETERMINATION OF SOUND POWER LEVEL AND EMISSION SOUND PRESSURE LEVEL |
| ANSI NEMA MG 00001:2024 | Motors and Generators |
| ANSI NEMA MG 00001:2024 | Motors and Generators |
| ISO 7574-2:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 2: Methods for stated values for individual machines |
| ISO 4871:1996 | Acoustics — Declaration and verification of noise emission values of machinery and equipment |
| IEC 61183:1994 | Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters |
| ISO 12001:1996 | Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and presentation of a noise test code |
| 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 |
| ISO/TR 25417:2007 | Acoustics — Definitions of basic quantities and terms |
| ISO 9614-1:1993 | Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points |
| IEC 60942:2003 | Electroacoustics - Sound calibrators |
| ISO 26101:2017 | Acoustics — Test methods for the qualification of free-field environments |
| ISO 3747:2010 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering/survey methods for use in situ in a reverberant environment |
| ISO 3740:2000 | Acoustics — Determination of sound power levels of noise sources — Guidelines for the use of basic standards |
| ISO 140-3:1995 | Acoustics — Measurement of sound insulation in buildings and of building elements — Part 3: Laboratory measurements of airborne sound insulation of building elements |
| ISO 9613-1:1993 | Acoustics — Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere |
| ISO 9614-2:1996 | Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning |
| 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 80000-8:2007 | Quantities and units — Part 8: Acoustics |
| 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 11690-1:1996 | Acoustics — Recommended practice for the design of low-noise workplaces containing machinery — Part 1: Noise control strategies |
| ISO 6926:2016 | Acoustics — Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels |
| ISO 9614-3:2002 | Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 3: Precision method for measurement by scanning |
| 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 |
| IEC 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| ISO 11201:2010 | Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
| 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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