I.S. EN ISO 3744:2010

Foreword
Introduction
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) - Qualification procedures for the
        acoustic environment
Annex B (normative) - Microphone arrays on a hemispherical
        measurement surface
Annex C (normative) - Microphone arrays on a parallelepiped
        measurement surface
Annex D (informative) - Microphone arrays on a cylindrical
        measurement surface
Annex E (normative) - Calculation of A-weighted sound power
        levels and A-weighted sound energy levels from
        frequency band levels
Annex F (normative) - Alternative microphone array on a
        hemispherical measurement surface for direct
        measurements of A-weighted sound pressure levels
Annex G (normative) - Sound power level and sound energy
        level under reference meteorological conditions
Annex H (informative) - Guidelines on the development of
        information on measurement uncertainty
Bibliography
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2006/42/EC

Defines methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes.