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
1,868 Accredited labs
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DAkkS D-ML-13200-01-00 Mannheim, DE
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Aspergillus fumigatus AK Candida albicans-AK Antikörper gegen Cardiolipin Factor) Cryptococcus neoformans + 3 more
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DAkkS D-ML-13021-03-00 Münster, DE
ACTA2 ACTC1 ACTN2 ANK2 CACNA1C + 3 more
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anti-CMV IgG anti-CMV IgM CMV IgG Avidität Denguevirus Antigen Denguevirus IgG Antikörper + 3 more
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DAkkS D-ML-13021-11-00 Münster, DE
Cyclosporin A Everolimus Sirolimus Cyclosporin A, Everolimus, Sirolimus, Ta alpha-Linolensäure + 3 more
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DAkkS D-ML-13021-10-01 Münster, DE
Treponema pallidum (RPR) Clostridioides difficile (Glutamatdehydrogenase 1 (Antigen) Streptococcus pneumoniae + 3 more
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DAkkS D-ML-13021-09-00 Münster, DE
anti-CMV IgG anti-CMV IgM CMV IgG Avidität Denguevirus Antigen Denguevirus IgG Antikörper + 3 more
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DAkkS D-ML-13021-06-00 Münster, DE
Azoospermie, Oligozoospermie (AZF) angeborener Chromosomensatz erworbener Chromosomensatz
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DAkkS D-ML-13021-01-00 Münster, DE
Cyclosporin A Everolimus Sirolimus Cyclosporin A, Everolimus, Sirolimus, Ta alpha-Linolensäure + 3 more
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DAkkS D-ML-13084-02-00 Regensburg, DE
Liste aller Untersuchungsverfahren Webpräsenz des Medizinischen Laboratoriu Cyclosporin A 25-Hydroxy Vitamin D Ethylglucuronid, Ethylsulfat + 3 more
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DAkkS D-ML-13084-03-00 Regensburg, DE
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DAkkS D-ML-13069-04-01 Kiel, DE
Leukozytenanzahl Zelldifferenzierung Zell-Differenzierung von Zytospinpräparaten Pappenheim-Färbung + 3 more
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DAkkS D-ML-13069-06-00 Lübeck, DE
IgG Antikörper gegen Desmoglein IgG Antikörper gegen Envoplakin IgE Antikörper gegen BP180 IgG Antikörper gegen BP180 IgG Antikörper gegen BP230 + 3 more
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DAkkS D-ML-13069-18-01 Lübeck, DE
angeborener Chromosomensatz erworbener Chromosomensatz Fra(X)-Syndrom, FXTAS (FMR1) Friedreich Ataxie (FXN) DRPLA (ATN1) + 3 more
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DAkkS D-ML-13069-02-01 Kiel, DE
10-OH-Carbazepin 9-OH-Risperidon Acebutolol Ajmalin Amiodaron, Desmethylamiodaron + 3 more
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DAkkS D-ML-13069-08-00 Kiel, DE
Sprosspilze, Schimmelpilze, Dermatophyte Staphylococcus aureus, MRSA Plasmodien (Malaria) (Plasmodium falciparum/vivax/ovale/malariae Legionella, Antigen + 3 more
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DAkkS D-ML-13130-02-00 Tübingen, DE
Phytansäure Behensäure Lignocerinsäure Cerotinsäure Adrenalin + 3 more
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DAkkS D-ML-13130-04-00 Tübingen, DE
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DAkkS D-ML-13130-01-00 Tübingen, DE
Urinsediment (Leukozyten) Legionella spp. Lipoid-AK (Treponema pallidum Aktivitätsparameter) Salmonella spp. + 3 more
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DAkkS D-ML-13130-03-01 Tübingen, DE
Herpes-simplex (IgM) Herpes-simplex (IgG) Herpes-simplex 1 (IgG) Herpes-simplex 2 (IgG) Varizella-Zoster-Virus (IgM) + 3 more
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DAkkS D-ML-13130-07-00 Tübingen, DE
Ataxien (FXN, SCA1, SCA2, SCA3, SCA6, SC Tumor-Prädispositionen: Brust- Hereditäres Magenkarzinom (CDH1) C9orf72 Chorea Huntington (HTT) + 3 more
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DAkkS D-ML-13130-05-00 Tübingen, DE
Basophile Granulozyten Allergenspezifisches IgE Gesamt IgE Tryptase anti-Cardiolipin-IgG + 3 more
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DAkkS D-ML-13294-08-00 Ulm, DE
Aminosäurendiagnostik verschiedene Aminosäuren) Differenzialblutbild Urinbestandteile Zellzählung + 3 more
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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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