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Norm

ÖNORM EN ISO 3745

Issue date: 2017 10 15

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 (ISO 3745:2012 + Amd.1:2017) (consolidated version)

This International Standard specifies methods for measuring the sound pressure levels on a measurement surface enveloping a noise source (machinery or equipment) in an a...
Valid
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 76 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This International Standard specifies methods for measuring the sound pressure levels on a measurement surface enveloping a noise source (machinery or equipment) in an anechoic room or a hemi-anechoic room. The sound power level (or, in the case of impulsive or transient noise emission, the sound energy level) produced by the noise source, in frequency bands of width one-third octave or with frequency weighting A applied, is calculated using those measurements, including corrections to allow for any differences between the meteorological conditions at the time and place of the test and those corresponding to a reference characteristic acoustic impedance. In general, the frequency range of interest includes the one-third-octave bands with mid-band frequencies from 100 Hz to 10 000 Hz. In practice, the range is extended or restricted to frequencies beyond or within these limits, to those between which the test room is qualified for the purposes of the measurements.
ÖNORM EN ISO 3745
2017 10 15
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound...
Norm
ÖNORM EN ISO 3745
2012 06 01
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound...
Norm
ÖNORM EN ISO 3745
2009 12 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision me...
Norm
ÖNORM EN ISO 3745
2006 04 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision me...
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ÖNORM EN ISO 3745
2004 05 01
Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision me...
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ÖNORM S 5035
1978 12 01
Determination of sound power of noise sources; methods for anechoic and semi-anechoic rooms
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