BS EN ISO 3745 : 2012
Current
The latest, up-to-date edition.
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
Foreword
Introduction
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 of 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 a
hemi-free field
Annex F (normative) - Coaxial circular paths of
microphones on a hemispherical measurement surface
in a hemi-free field
Annex G (normative) - Meridional paths of microphones
on a hemispherical measurement surface in a
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
Annex ZA (informative) - Relationship between this European
Standard and the Essential Requirements of EU
Directive 2006/42/EC
Bibliography
Describes 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 |
EH/1/4
|
| DevelopmentNote |
Supersedes BS 4196-5(1981) and 01/565268 DC (12/2003) Supersedes 09/30201636 DC. (08/2010) Supersedes 10/30094845 DC. (04/2012)
|
| DocumentType |
Standard
|
| Pages |
76
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NF EN ISO 3745 : 2013 AMD 1 2017 | Identical |
| ISO 3745:2012 | Identical |
| NBN EN ISO 3745 : 2012 | Identical |
| NS EN ISO 3745 : 2012 AMD 1 2017 | Identical |
| NEN EN ISO 3745 : 2012 AMD 1 2017 | Identical |
| I.S. EN ISO 3745:2012 | Identical |
| EN ISO 3745:2012 | Identical |
| DIN EN ISO 3745:2012-07 | Equivalent |
| UNE-EN ISO 3745:2012 | Identical |
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