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
🇩🇪 DIN EN ISO 3744 🇬🇧 BS EN ISO 3744 🇫🇷 NF EN ISO 3744 🇮🇹 UNI EN ISO 3744 🇪🇸 UNE EN ISO 3744 🇳🇱 NEN EN ISO 3744 🇩🇪 DIN EN ISO 3745 🇬🇧 BS EN ISO 3745 🇫🇷 NF EN ISO 3745 🇮🇹 UNI EN ISO 3745 🇪🇸 UNE EN ISO 3745 🇳🇱 NEN EN ISO 3745
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BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 140-4:1998 ISO 1407 ISO 7171 BS EN ISO 9972:2015 + 1 more
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Airborne Environmental Consultants

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UKAS 0232 Manchester, GB
(HSG 264, 2012)
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Airborne Environmental Consultants

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UKAS 2054 Manchester, GB
(HSG 248) – 2021 AEC 1 based on HSG 248 (PCM) based on HSG 248 AEC 6 based on HSG 248
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Airbus Defence and Space

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DAkkS D-K-18731-01-01 Manching, DE
- Gleichspannung / Messgeräte 1 µV Quellen > 1 V + 3 more
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Airsafe Analytical

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UKAS 4376 Alton, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Airtech Analysis

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UKAS 0681 Writtle, GB
(HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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Akustikberatung Wiemers

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DAkkS D-PL-11244-01-01 Berlin, DE
EN 14033-3 ISO 9611 ISO 11201
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Akustikbüro Dahms

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DAkkS D-PL-20065-01-00 Potsdam, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN 61400-11
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DAkkS D-PL-18995-01-00 Göttingen, DE
DIN 45645-2
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DIN EN IEC 60268-16 DIN VDE 0833-4
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DAkkS D-PL-11344-01-01 Berlin, DE
ISO 23351-1 ASTM E 1354 DIN EN ISO 717-1 DIN EN ISO 717-2 DIN EN ISO 3382-1 + 3 more
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Alfred H Knight Energy Services

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UKAS 1765 Kilmarnock, GB
BS ISO 18283:2022 ASTM D2234 (location E) ASTM D2013 (location B) BS ISO 5074:2015; and ASTM D409:2016 + 3 more
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Alkali Environmental

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UKAS 24303 South Milford, GB
BS EN ISO 16911-1:2013 using DIN EN 14181 DIN EN 13126-19 DIN EN 15058 DIN EN 14789 + 3 more
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Alleima

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DAkkS D-PL-11123-01-02 Werther (Westf.), DE
DIN EN ISO 6506-1 ASTM E 10-18 DIN EN ISO 6508-1 ASTM E 18-22 DIN EN ISO 6507-1 + 3 more
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Allgäuer Messzentrum

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DAkkS D-K-19562-01-01 Kaufbeuren, DE
Durchmesser 1 mm 510 mm Rundheitsabweichung 1 mm Parallelitätsabweichung Rundheitsabweichung + 3 more
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Allied Aerosystems

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UKAS 0666 Pontypridd, GB
DC Resistance 2.92 mm systems (continued) DC VOLTAGE AC CURRENT DC Power + 3 more
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Allium Environmental

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UKAS 6093 Scorrier, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Allium Environmental

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UKAS 0212 Redruth, GB
(HSG 264, 2012)
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Ambientale srl

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ACCREDIA 00902 Lecce, IT
DIN EN 1484 EPA 8260 DIN EN 17892 EPA 3510 UNI 10506 + 3 more
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Ambulanzzentrum des UKSH gemeinnützige GmbH Universitäres MVZ Kiel Pädiatrische Endokrinologie und Diabetologie Kinderendokrinologisches Labor

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Amentum Clean Energy

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OM H-3 based on ISO 9698:2019 ISO 9696:2017 and ISO (HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248.
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Industries

Industrial machinery and equipment manufacturing Environmental noise consulting Construction and power tool equipment HVAC and ventilation systems Occupational health and safety

Related Standards

  • ISO 3744 Determination of sound power levels of noise sources using sound pressure — Precision method in anechoic and hemi-anechoic rooms
  • ISO 3745 Determination of sound power levels of noise sources using sound pressure — Precision grade method for anechoic rooms and free fields over a reflecting plane
  • ISO 3747 Determination of sound power levels of noise sources using sound intensity — In-situ method using a reference sound source
  • ISO 9614-1 Determination of sound power levels of noise sources by sound intensity — Part 1: Measurement at discrete points

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