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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GRAVICAL

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DAkkS D-K-21136-01-00 Damme, DE
Innen- und Tiefenmaße Konventioneller Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) + 1 more
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DAkkS D-PL-18931-01-01 Hannover, DE
DIN 45645-2
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DAkkS D-K-15106-01-02 Bickenbach, DE
Vickers hardness test (ISO 6507) Kraft Kraftaufnehmer und Sound power — survey method (ISO 3746) 0,2 MN + 3 more
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Abgasmessgeräte für motoren Transmissionsfilter Trübungsgrad N Transmission T + 3 more
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DIN 30655-1 DIN 30655-2 DIN 3590-1 DIN 3590-2 DIN 30652-2 + 3 more
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Anti-Müller-Hormon Androstendion CA 125 Cortisol DHEA-S + 3 more
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Azoospermie (AZF-Mikrodeletionen) Fragiles X-Syndrom (FMR1) Chorea Huntington (HTT) Spinocerebelläre Ataxie Typ1 (ATXN1); Typ 2 (ATXN2); Typ 3 + 3 more
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HLA Klasse I Antikörper lymphozytäre Antikörper donorspezifische komplementabhängige
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DAkkS D-ML-18276-01-01 Duisburg, DE
Thrombozytenaggregation Epinephrin-Ristocetin) nach Verschlusszeitbestimmung Kollagen / ADP, PFA-Kollagen Epinephrin, PFA-P2Y) + 3 more
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DAkkS D-PL-11021-01-01 Leipzig, DE
ISO 1920-4 DIN EN 480-11 DIN EN 12350-1 DIN EN 12350-3 DIN EN 12350-6 + 3 more
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DAkkS D-ML-14571-01-00 Brandenburg an der Havel, DE
Aktivator ADP / Epinephrin Thrombozytenfunktionstest Basophile Leukozyten, absolut Basophile Leukozyten Eosinophile Leukozyten + 3 more
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DAkkS D-PL-18520-01-01 Arnstorf, DE
ISO 354 BS EN ISO 717-2:2020 ISO 7171 UNE-EN ISO 3382-2 BS EN ISO 10140-3:2021 + 3 more
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DAkkS D-K-15047-01-00 Türkenfeld, DE
spektrale Mikrofonempfindlichkeit Photodioden 1 µA/W Bestrahlungsstärke + 3 more
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Grohe

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DAkkS D-PL-21413-01-01 Hemer, DE
DIN EN 22248 DIN ISO 1817 IEC 60512-11-11 IEC 60512-11-12 DIN EN ISO 3822-1 + 3 more
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DAkkS D-PL-17291-01-00 Buchen Odenwald, DE
ASTM D3835-16 ASTM D6204-19a ASTM D6601-19 ISO 11443 ASTM D1238-13 + 3 more
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DAkkS D-PL-19908-01-01 Salzbergen, DE
ISO 3105 ASTM D 7042 ISO 2909 ASTM D 5293 ISO 3104 + 3 more
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DAkkS D-K-17638-01-02 Remscheid, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Drehmoment 2 N·m Handbetätigte 20 N·m + 3 more
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HBT

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DAkkS D-PL-18658-01-01 Lünen, DE
DIN 18041 DIN EN 1804-2 DIN EN 1804-3
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DAkkS D-ML-13015-01-01 Wiesbaden, DE
Verschlusszeit (ADP, Epinephrin, P2Y12) HCG, ß-HCG PF4/Heparin-Komplexe induzierte Thrombozytopenie, Test) Differenzialblutbild (maschinell) + 3 more
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HCG, ß-HCG Ampicillin Cefipim Hämoglobin A1c (HbA1c) Linecolid + 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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