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
1,670 Accredited labs
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Showing 676–700 of 834 labs

DAkkS D-ML-13134-06-01 Freiburg, DE
RPL27, RPL3, RPL31, RPL34, RPL35, RPL35A Diamond-Blackfan-Anämie ; DBA NOP10, PARN, RPA1, RTEL1, SAMD9, SAMD9L, Dyskeratosis congenita; DC Panel NOP10, PARN, POT1, RPA1, RTEL1, SAMD9, S + 3 more
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DAkkS D-ML-13134-07-00 Freiburg, DE
Differenzierung peripheres Erstellung eines Differentialblutbilds Differenzierung Knochenmark Pappenheim-Färbung Peroxidase-Reaktion + 3 more
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DAkkS D-ML-13134-12-00 Freiburg, DE
HLA-Antikörpertestung (Detektion) HLA-Antikörpertestung (Spezifizierung Klasse I und (Spezifizierung komplementbindender Antikörper + 3 more
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DAkkS D-ML-13304-04-01 Marburg, DE
Anaerobier-Resistenz Bakterien-Resistenz Hefen-Resistenz Carbapenemasenachweis Cryptosporidien, Giardia + 3 more
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DAkkS D-ML-13304-03-00 Gießen, DE
Thrombozyten Zellzählung und -differenzierung Calcium, ionisiert Natriumchlorid Glukose + 3 more
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DAkkS D-ML-13304-07-01 Gießen, DE
DPYD-Genotypisierung vor 5 FU Therapie, SNV Polyposissyndrome (APC, BMPR1A, MUTYH, N (Custom made by TWIST), SNV Hereditärer Darmkrebs inklusive + 3 more
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DAkkS D-ML-13304-01-00 Gießen, DE
Thrombozytenaggregation Arachidonsäure Kollagen/Epinephrin Ristocetin Erythrozyten + 3 more
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DAkkS D-ML-13304-09-01 Marburg, DE
9-OH-Risperidon/Paliperidon Aripiprazol Citalopram Clozapin, Norclozapin Cyclosporin (CSA) + 3 more
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DAkkS D-ML-13304-08-01 Marburg, DE
Borrelia burgdorferi Chlamydophila pneumoniae Coxiella burnetii Toxoplasma gondii Adenovirus + 3 more
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DAkkS D-ML-13304-10-00 Marburg, DE
Syndrom, Gene: AKT1, PIK3CA, PTEN, SEC23B Carney-Komplex, Gene: PRKAR1A, OMIM*600993, STK11 Cowden-Syndrom, Gene: AKT1, + 3 more
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DAkkS D-ML-13217-01-00 Halle (Saale), DE
Blutgruppe AB0 Rh-Faktor Rh-Formel Kell-Ag A-Untergruppe + 3 more
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DAkkS D-ML-13217-04-00 Halle (Saale), DE
DPYD (SNP-Analyse) JAK2 Kodon 617 Mutationsanalyse T-Zellklonalitätsanalyse (TCRG und TCRB) B-Zellklonalitätsanalyse (IGH, IGL, IGK) + 3 more
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DAkkS D-ML-13278-01-01 Hamburg, DE
Aminosäuren Second Tier Test IVA Screening (C5 -Carnitin Isobaren) 17-α-OH-Progesteron (17-OH-P) Biotinidase + 3 more
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DAkkS D-ML-13278-03-00 Hamburg, DE
Factor) Treponema pallidum-Antikörper Treponema pallidum (TPHA) Treponema pallidium (VDRL) Escherichia coli Serotyp + 3 more
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DAkkS D-ML-13278-07-00 Hamburg, DE
Cyclosporin A Everolimus FK 506 (Tacrolimus) Sirolimus 6-Methylmercaptopurin + 3 more
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DAkkS D-ML-13278-02-00 Hamburg, DE
Lymphozyten gesamt, absolut Natürliche Killerzellen, T-Lymphozyten Zelltypisierung (B-Lymphozyten CD57-positive NK-Zellen CD4+ Helfer-Lymphozyten + 3 more
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DAkkS D-ML-13200-02-01 Mannheim, DE
Bakterien, Sprosspilze MRGN Streptococcus pneumoniae Burkholderia cepacia Komplex Bakterien, Pilze + 3 more
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DAkkS D-ML-13200-03-01 Mannheim, DE
and Mitochondrial Panel) (BRCA1, BRCA2 ) ESR1 Punktmutation in Codons 380, 463, 535, 5 (Mammakarzinom) OMIM*164790, PIK3CA + 3 more
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DAkkS D-ML-13060-06-00 Heidelberg, DE
TSH 17-Hydroxyprogesteron IRT PAP GALT + 3 more
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DAkkS D-ML-13060-04-00 Heidelberg, DE
Zellzahlbestimmung, CD3+, CD4+, CD8+, CD fixpunktzellen Phänotypisierung von Leukozyten C3d Faktor H + 3 more
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DAkkS D-ML-13060-03-00 Heidelberg, DE
Fragiles X-Syndrom, primäre Tremor-Ataxie-Syndrom (FMR1 Parietalzellen/Magen) Glutarazidurie Typ 1 (GCDH -Gen) Dehydrogenase-Mangel (ACADM + 3 more
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DAkkS D-ML-13060-01-00 Heidelberg, DE
Acetominophen Albumin Alkohol ALP Alpha 2-Antiplasmin + 3 more
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DAkkS D-ML-13060-09-00 Heidelberg, DE
Salmonella spp. Shigella spp. Staphylococcus spp. Yersinia spp. Actinomyces spp. + 3 more
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DAkkS D-ML-13144-05-00 Jena, DE
Angelmann-Syndrom (15q11-q13 Region) Prader-Willi-Syndrom (15q11-q13 Ausschluss/ Nachweis mütterlicher Zellen im pränatalen + 3 more
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DAkkS D-ML-13144-04-00 Jena, DE
Cryptococcus neoformans, Antikörper Pneumokokken Salmonellen Shigella spp. Staphylococcus aureus + 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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