DIN EN ISO 3745:2017-10

National foreword
National Annex NA (informative) - Bibliography
European foreword
European foreword to Amendment 1
Foreword to Amendment 1
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Reference meteorological conditions
5 Test rms
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 hemifree 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

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.