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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DAkkS D-ML-19668-01-00 Mainz, DE
Hämoglobin Natriumchlorid Kalium Natrium Eiweißelektrophorese: Albumin, Alpha-1-G + 3 more
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17-OH-Progesteron Aciclovir Aripiprazol Carbamazepin-epoxid Clozapin, Norclozapin + 3 more
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DAkkS D-ML-19665-02-00 Ritschenhausen, DE
Differentialblutbild Automat Eosinophile, Basophile, Normoblasten, ni MN (mononukleare Zellen) Leukozyten Retikulozyten, Retikulozyten Hb + 3 more
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HCG, ß-HCG Ampicillin Cefipim Hämoglobin A1c (HbA1c) Linecolid + 3 more
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DAkkS D-ML-13273-01-00 Minden, DE
Differentialblutbild Kleines Blutbild (maschinell) Thrombozyten Unreife Thrombozyten (IPF) Urinsediment (maschinell) + 3 more
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DAkkS D-ML-17683-01-00 Darmstadt, DE
HbA1c Großes Blutbild Kleines Blutbild Retikulocyten Natriumchlorid + 3 more
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DAkkS D-ML-13243-01-00 Georgsmarienhütte, DE
Verschlußzeiten 10-Hydroxycarbamazepin + Oxcarbazepin Amiodaron + Desmethylamiodaron Amisulprid + 3 more
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DAkkS D-ML-13243-01-01 Georgsmarienhütte, DE
IGF-1 (Somatomedin C) Lamotrigin HbA1c Aldosteron Albumin + 3 more
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DAkkS D-ML-18474-01-01 Frankfurt am Main, DE
17-OH-Progesteron Androstendion Everolimus Metanephrin, Normetanephrin Methylmalonsäure + 3 more
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DAkkS D-ML-17159-01-00 Berlin, DE
Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Hämatokrit Leukozyten + 3 more
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DAkkS D-ML-18033-01-00 Köln, DE
Liste aller Untersuchungsverfahren im fl Webpräsenz des Medizinischen Laboratoriu HbA1c Basophile Basophile absolut + 3 more
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DAkkS D-ML-18493-01-00 Darmstadt, DE
HbA1c Großes Blutbild Kleines Blutbild Retikulocyten Natriumchlorid + 3 more
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DAkkS D-ML-13247-01-01 Sindelfingen, DE
Ristocetin Kofactor Aktivität Willibrand Faktors a-Hydroxy-Alprazolam Amilsulprid 7-amino-Flunitrazepam + 3 more
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DAkkS D-ML-18515-01-00 Dresden, DE
GPT GOT GGT Salmonellen Shigellen + 3 more
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DAkkS D-K-19233-01-00 Wiehl, DE
Kraft (WPM) Kraftmesseinrichtungen von Werkstoffprüfmaschinen nach DIN 51220 * Acoustics — tonality assessment (DIN 456 + 3 more
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DAkkS D-K-21171-01-01 Chemnitz, DE
Gleichspannung 33 mV Messgeräte 0,33 V 330 V Gleichstromstärke 33 µA Messgeräte 0,33 mA + 3 more
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DAkkS D-K-21443-01-00 Schmalkalden, DE
(ein- und mehrgängige zylindrische Außen- und symmetrischem und unsymmetrischem Profil) Außengewinde + 3 more
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DAkkS D-PL-11240-01-01 Bremen, DE
DIN EN 60601-2-4 IEC 60512-4-1 DIN EN 124-2 IEC 60512-4-3 DIN EN 60601-2-44 + 3 more
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DAkkS D-ML-21457-02-00 Lehrte, DE
Aluminium Blei Eisen, Kupfer Ampicillin Cefepim + 3 more
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DAkkS D-K-21622-01-00 Unterschleißheim, DE
anteile Kohlenstoffmonoxid Kohlenstoffdioxid Methan Ethan + 3 more
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DAkkS D-K-15223-01-00 Wertheim, DE
Taupunkttemperatur Fixpunktzellen *) thermometer (SPRT) *) meter, direkt anzeigende thermometer und + 3 more
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DAkkS D-ML-14413-03-01 München, DE
Cryptococcus neoformans Cardiolipin AK Escherichia coli K1-AG Haemophilus influenzae Metromec Software AG + 3 more
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DAkkS D-PL-12159-01-00 Krefeld, DE
DIN EN ISO 16484-5 DIN EN ISO 16484-6 IEC 62386-101 IEC 62386-102 IEC 62386-103 + 3 more
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DAkkS D-PL-19548-01-03 Waldkraiburg, DE
DIN EN 13018 DIN EN 50289-1-2 DIN EN 50289-1-3 DIN EN 50289-1-4 DIN EN 50289-1-5 + 3 more
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DAkkS D-ML-13341-01-01 Berlin, DE
17-OH-Carbazepin Amiodaron, Desmethylamiodaron Amitriptylin Clobazam Clomipramin + 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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