EN ISO 3745:2009

Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003)

Publication date:   Jan 30, 2010

General information

99.60 Withdrawal effective   Mar 15, 2012

CEN

CEN/TC 211 Acoustics

European Norm

17.140.01   Acoustic measurements and noise abatement in general

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Scope

ISO 3745:2003 specifies methods for measuring the sound pressure levels on a measurement surface enveloping a noise source in anechoic and hemi-anechoic rooms, in order to determine the sound power level or sound energy level produced by the noise source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the sound power level or sound energy level is calculated, leading to results which have a grade 1 accuracy.
The methods specified in ISO 3745:2003 are suitable for measurements of all types of noise.
The noise source can be a device, machine, component or sub-assembly. The maximum size of the source under test depends on the radius of the hypothetical sphere (or hemisphere) used as the enveloping measurement surface.

Related legislation

Legislation related to this standard

98/37/EC

Machinery

2006/42/EC

Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)

Harmonized/Supporting

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 3745:2003/AC:2006

WITHDRAWN
EN ISO 3745:2003

NOW

WITHDRAWN
EN ISO 3745:2009
99.60 Withdrawal effective
Mar 15, 2012

REVISED BY

PUBLISHED
EN ISO 3745:2012

Relations

Adopted from ISO 3745:2003 IDENTICAL