ANSI S12.56 : 2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
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
Hardcopy , PDF
English
01-01-2016
13-07-2019
1 Scope
2 Normative references
3 Terms and definitions
4 Test environment
5 Instrumentation
6 Definition, location, installation and operation
of noise source under test
7 Reference box and measurement surface
8 Determination of sound power levels and
sound energy levels
9 Measurement uncertainty
10 Information to be recorded
11 Test report
Annex A (normative) - Determination of the
environmental correction
Annex B (normative) - Microphone arrays on a
hemispherical measurement surface
Annex C (normative) - Microphone arrays on a
parallelepiped measurement surface
Annex D (informative) - Guidelines on the development
of information on measurement uncertainty
Bibliography
Provides methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping a noise source (machinery or equipment) in a test environment for which requirements are given.
| Committee |
S12
|
| DevelopmentNote |
Also numbered as ISO 3746. (09/2003) Supersedes ANSI S12.36 (02/2006)
|
| DocumentType |
Standard
|
| Pages |
66
|
| ProductNote |
Reconfirmed 2011
|
| PublisherName |
Acoustical Society of America
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| 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 11202:2010 | Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections |
| ISO 11200:2014 | Acoustics — Noise emitted by machinery and equipment — Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions |
| ISO 4871:1996 | Acoustics — Declaration and verification of noise emission values of machinery and equipment |
| 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 9296:2017 | Acoustics — Declared noise emission values of information technology and telecommunications equipment |
| 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 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 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 11203:1995 | Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level |
| 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 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 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 11204:2010 | Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions applying accurate 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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