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Norm

ISO 3745:2003

Issue date: 2003 11 25

Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for anechoic and hemi-anechoic rooms

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 t...
Withdrawn: 2012 03 16
Publisher:
International Organization for Standardization
Format:
Digital | 43 Pages
Language:
English
Currently valid:

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.

ISO 3745:2012
2012 03 16
Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound...
Norm
ISO 3745:2003
2003 11 25
Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision me...
Norm
ISO 3745:1977
1977 05 01
Acoustics — Determination of sound power levels of noise sources — Precision methods for anechoic an...
Norm
Norm
ISO 3745:2012
Issue date : 2012 03 16
Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms