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
20 Countries

Showing 1,726–1,750 of 1,868 labs

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
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-13130-01-00 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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DAkkS D-ML-13294-03-01 Ulm, DE
angeborene und erworbene Chromosomenstörungen gezielter Nachweis (sub)mikroskopisch kleiner angeborener oder erworbener + 3 more
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DAkkS D-ML-13294-07-00 Ulm, DE
Treponema pallidum (Cardiolipin Antikörper, Lues-Analytik) Cryptococcus neoformans Meningitiserreger (Streptococcus agalactiae, Haemophilus + 3 more
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DAkkS D-ML-13294-06-00 Ulm, DE
Allergenspezifisches IgE ECP (Eosinophiles cationisches (ECP) Mastzell Tryptase spezifisches IgG + 3 more
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DAkkS D-ML-13294-02-00 Ulm, DE
ADP Arachidonsäure Kollagen/Epinephrin Ristocetin Expression aktivierungsabhängiger + 3 more
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DAkkS D-ML-13294-01-01 Ulm, DE
HbA1c Aldosteron Cortisol APCR- Resistenz Cardiolipin-AK IgG + 3 more
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DAkkS D-ML-13220-02-00 Homburg, DE
freies Hämoglobin Erythrozyten Hämatokrit Hämoglobin Kleines Differential-Blutbild + 3 more
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DAkkS D-ML-13220-01-01 Homburg, DE
Urinsediment Lamotrigin HbA1c Erythrozyten Aripiprazol + 3 more
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DAkkS D-ML-13155-04-00 Greifswald, DE
Familiäre Adenomatöse Polyposis Syndrome (APC, MUTYH) STK11, SMAD4 ), TruRisk® -Panel [SNV, CN Familiäre Polyposis-Syndrome [FAP] (APC, MUTYH) + 3 more
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DAkkS D-ML-13161-02-00 Göttingen, DE
angeborener Chromosomensatz Molybdän-Cofaktor Defizienz (MOCS1, MOCS2) Fragiles X-Syndrom: FMR1 Spinocerebellare Ataxie (SCA) + 3 more
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DAkkS D-ML-13161-01-00 Göttingen, DE
Thrombozytenaggregation Born Verschlußzeit Kollagen/ADP Verschlußzeit Kollagen/Adrenalin 6-Methyl-Mercaptopurinnukleotide + 3 more
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DAkkS D-ML-13161-05-00 Göttingen, DE
Thrombozytenaggregation Born Verschlußzeit Kollagen/ADP Verschlußzeit Kollagen/Adrenalin 6-Methyl-Mercaptopurinnukleotide + 3 more
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DAkkS D-ML-13161-06-00 Göttingen, DE
angeborener Chromosomensatz Molybdän-Cofaktor Defizienz (MOCS1, MOCS2) Fragiles X-Syndrom: FMR1 Spinocerebellare Ataxie (SCA) + 3 more
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DAkkS D-ML-13193-04-00 Rostock, DE
alpha-Aminobuttersäure Mianserin Arginin Asparagin Asparaginsäure + 3 more
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DAkkS D-ML-13193-01-00 Rostock, DE
Candida spp.-Antikörper Cardiolipin-Antikörper Meningitiserreger-Ag (E. coli Staphylococcus aureus Treponema pallidum-Antikörper + 3 more
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DAkkS D-ML-13193-03-01 Rostock, DE
Granulozytäre Antikörper (Screening und Differenzierung) HLA spezifische Antikörper B-Streptokokken (Screening) Ektoparasiten (Differenzierung) + 3 more
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DAkkS D-ML-13258-04-00 Mainz, DE
Anti-Thyreoglobulin-Antikörper [Anti-TG] Anti-Thyreoperoxidase Antikörper [Anti-TPO] Anti-TSH-Rezeptor Antikörper + 3 more
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DAkkS D-ML-13258-01-01 Mainz, DE
angeborener Chromosomensatz Silver-Russell-Syndrom: H19, KCNQ1OT1 MEST Deletion; Angelman-Syndrom + 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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