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EN ISO 3745:2009 Standard

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  Keywords:

#level #source #surface #standard #measurement

This standard is superseded by:
  •   EN ISO 3745:2012 from: 2018-06-30
  •   EN ISO 3745:2012/A1:2017
  •   This standard is no longer addressed in the last official Journal publication of the "2025-08-13 ". This standard is addressed for the last time in the official journal publication of the "2012-08-24"

      Directive

    Machinery (MD) Directive (2006/42/EC)

      Last Official Journal reference

    Friday 24th of August 2012

      Description:

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

      Purpose

    This International Standard 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 this International Standard 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.

      Publication

    Tuesday 29th of December 2009

      Cessation

    This standard has been withdrawn on 2012-09-30

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