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SSH EN ISO 3744:2007

Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994)

Jan 1, 2007
95.99 Withdrawal of Standard   Jun 21, 2010

General information

95.99     Jun 21, 2010

DPS

DPS/KT 211

European Norm

17.140.01  

English  

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Scope

This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise source, under essentially free-field conditions near one or more reflecting planes, in order to calculate the sound power 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 of the source is calculated, leading to results which have a grade 2 accuracy. It is important that specific noise test codes for various types of equipment be established and used in accordance with this International Standard. For each type of equipment, such noise test codes will give detailed requirements on mounting, loading and operating conditions for the equipment under test as well as a selection of the measurement surface and the microphone array as specified in this International Standard. Note: The noise test code for a particular type of equipment should give detailed information on the particular surface that is selected, as the use of differently shaped measurement surfaces may yield differing estimates of the sound power level of a source.

Related directives

Directives related to this standards.

98/37/EC

Machinery

Harmonized
89/392/EEC

Machinery - Safety of machinery: general essential health and safety requirements

Harmonized

Life cycle

NOW

WITHDRAWN
SSH EN ISO 3744:2007
95.99 Withdrawal of Standard
Jun 21, 2010

REVISED BY

WITHDRAWN
SSH EN ISO 3744:2009

Related project

Adopted from EN ISO 3744:1995