Scope
ISO 3746:2010
Sound Power Level — Survey Method
This test determines sound power levels of noise sources using an enveloping measurement surface and sound pressure level measurements. It is a survey-grade method suitable for field measurements of machinery, equipment, and industrial sources in moderately reflective environments. The method is widely used for noise compliance verification, product development, and environmental impact assessments. Accredited testing ensures consistent, defensible results for regulatory compliance and product labeling. This method bridges the gap between laboratory-grade precision and practical field measurements.
What it measures
- Sound power level (Lw) in decibels
- A-weighted and frequency-weighted sound power
- Directional sound power distribution
- Acoustic performance of noise sources
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DIN EN ISO 3744
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BS EN ISO 3744
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NF EN ISO 3744
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UNI EN ISO 3744
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UNE EN ISO 3744
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NEN EN ISO 3744
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DIN EN ISO 3745
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BS EN ISO 3745
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NF EN ISO 3745
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UNI EN ISO 3745
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UNE EN ISO 3745
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NEN EN ISO 3745
1,670
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UNE 77061
UNE-EN ISO 15681-2
SM 4500-NH3 F
UNE-EN ISO 8467
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UNE-EN ISO 14362-1
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EXOLUM CORPORATION
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UNE-EN ISO 20884
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UNE-EN ISO 12156-1
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FUNDACION TEKNIKER
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EURAMET CG-2
CEM DI-014
CEM DI-037
UNE-EN ISO 2178
UNE-EN ISO 16809
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UNE-EN 2002-001
ISO 6508-1
UNE-EN 2559
ASTM B557
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FUNDACIÓN CIDAUT
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3 mV U < 330 mV 0,33 V U < 3,3 V 3,3
0 mV U < 200 mV 200 mV U < 2 V 2 V
0 mV U 100 mV 0,1 V < U 1 V 1 V <
5 mV U 30 V
10 mV U < 33 mV 50 Hz f 1 kHz 1 kH
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GIKE
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UNE-EN 12390-2
UNE-EN 12350-1
UNE-EN 1744-1
UNE-EN 933-1
UNE-EN 933-8
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ISO 3795
UNE-EN ISO 105
UNE-EN ISO 13934-1
UNE-EN 12127
UNE-EN ISO 6507-1
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9,8 L ≤ V ≤ 10,2 L (25 L/h ≤ Q ≤ 500 L/h
98 L ≤ V ≤ 104 L (250 L/h ≤ Q ≤ 5000 L/h
970 L ≤ V ≤ 1005 L (2500 L/h ≤ Q ≤ 20000
1305 L ≤ V ≤ 1350 L (5000 L/h ≤ Q ≤ 8000
2660 L ≤ V ≤ 2700 L (5000 L/h ≤ Q ≤ 1000
UNE-EN ISO 16283-1
UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 3382-2
ISO 16063-21
UNE-EN 60942
UNE-EN 61260
UNE-EN 61672-3
UNE-EN 60804
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IDIADA AUTOMOTIVE TECHNOLOGY
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DIN EN 1385
EN 17092-1:2020
DIN EN ISO 5077
EN 1317-1
DIN EN ISO 13688
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UNE-EN 61672-3
UNE-EN 60804
UNE-EN 60651
UNE-EN 61252
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INDUSTRIAL LAB R. REIG
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SM 2120
SM 4500-Cl G
UNE EN 27888
SM 4500-H+ B
SM 2130
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INERCO INSPECCIÓN Y CONTROL
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UNE-EN 15259
UNE-EN 13284-1
UNE 77225
EPA 8
UNE 77227
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UNE-EN 1793-5
UNE-EN 1793-6
UNE-EN 60404-14
0 mT ≤ B ≤ 75,7 mT (196 ± 3) mT (990 ± 4
3 mT ≤ B ≤ 300 mT 300 mT ≤ B ≤ 1600 mT
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
UNE-EN ISO 3382-2
UNE-EN ISO 16283-1
UNE-EN ISO 140-4
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