Abstract

This standard specifies accuracy class 2 (engineering method) procedures for the determination of the sound power level and the sound energy level of a noise source from sound pressure levels measured on a surface enclosing the noise source (a machine or an appliance) (enveloping surface), the noise source being located in an environment approximating an open-air acoustic field in the vicinity of one or more reflecting planes. The sound power level (or sound energy level for impulses or other sounds of short duration) generated by the noise source in frequency bands or with A-weighting is calculated from the measured sound pressure levels

Begin

2021-02-23

WI

00211202

Planned document number

DIN EN ISO 3744

Project number

00101118

Responsible national committee

NA 001-01-04 AA - Noise emission of machinery and equipment; measurement, reduction, data collection 

Responsible european committee

CEN/TC 211 - Acoustics 

Responsible international committee

ISO/TC 43/SC 1/WG 28 - Basic machinery noise emission standards 

draft standard

Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023); German and English version prEN ISO 3744:2023
2023-02
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previous edition(s)

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 3744:2010); German version EN ISO 3744:2010
2011-02

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