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
18 Countries

Showing 351–375 of 834 labs

ME-Meßsysteme

Active
DAkkS D-K-21980-02-01 Hennigsdorf, DE
Kraft 50 N Sound power — survey method (ISO 3746) > 200 N Railway brake — automatic variable load 0,2 kN + 1 more
View Profile

MESA Meß- und Regeltechnik Vertriebs- und Service

Active
DAkkS D-K-20515-01-00 Filderstadt, DE
Temperaturmessgrößen auch direktanzeigend 35 °C direktanzeigende > 200 °C auch direktanzeigend Temperaturmessgrößen −35 °C + 3 more
View Profile

MK-Kalibrierlabor

Active
DAkkS D-K-18366-01-01 Schweinfurt, DE
1350 mm Innen- und Tiefenmaße * > 300 mm Tiefenmessschieber * 0 mm Höhenmessschieber * 0 mm + 3 more
View Profile

MLL MVZ

Active
DAkkS D-ML-13228-01-00 München, DE
Berliner-Blau-Reaktion Naphthylacetat-Esterase Pappenheim-Färbung Peroxidase-Reaktion Schnellfärbung (Diff-Quick) + 3 more
View Profile

MLM MEDICAL LABS

Active
DAkkS D-ML-13178-01-01 Mönchengladbach, DE
CRP Cystatin C HbA1c Großes Blutbild Kleines Blutbild + 3 more
View Profile

MPA Eberswalde Materialprüfanstalt Brandenburg GmbH Prüflabor

Active
DAkkS D-PL-11241-01-01 Eberswalde, DE
DIN EN 50178: 1998 DIN EN ISO 2813 DIN EN ISO 4628-4 DIN EN ISO 10456 DIN EN ISO 12572 + 3 more
View Profile

MPA Kalibrierdienst

Active
DAkkS D-K-17552-01-01 Berlin, DE
Drehmoment * 0,2 N∙m > 10 N∙m bis Kalibriereinrichtungen > 100 N∙m Drehmomentschlüssel, 0,2 N∙m + 3 more
View Profile

MR COMP

Active
DAkkS D-PL-13383-01-00 Gelsenkirchen, DE
IEC 62570 DIN 13273-7
View Profile

MS2 ENGINEERING und ANLAGENBAU

Active
DAkkS D-K-20595-01-00 Kirchheim unter Teck, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Taupunkttemperatur direktanzeigende > 200 °C Widerstandssensor > 300 °C + 3 more
View Profile

MTS Systems (Germany)

Active
DAkkS D-K-21976-01-01 Berlin, DE
Kraft (WPM) Vibration measuring instruments — test m nen nach DIN 51220 Länge (WPM) *) Vibration and shock — experimental modal + 3 more
View Profile

MVZ (Medizinisches Versorgungszentrum) am Klinikum Passau GmbH Institut für Labor- und Transfusionsmedizin

Active
DAkkS D-ML-22373-01-00 Passau, DE
Großes Blutbild Kleines Blutbild Erythrozyten Hämoglobin Hämatokrit + 3 more
View Profile

MVZ - Medizinisches Versorgungszentrum Mülheim GmbH Nebenbetriebsstätte

Active
DAkkS D-ML-20741-01-00 Oberhausen, DE
Blutzellen Basophile Granulozyten Basophile Granulozyten, Eosinophile Gran Eosinophile Granulozyten, Erythrozyten, Basophile Leukozyten, absolut + 3 more
View Profile

MVZ Clotten Labor Haas, Raif & Kollegen

Active
DAkkS D-ML-13348-01-00 Freiburg, DE
Antiepileptika: (Flecainid) Arginin, ADMA, SDMA, Homoarginin Bupropion / Hydroxybupropion Cotinin, Nicotin + 3 more
View Profile

MVZ Stein + Kollegen SE & Co. e

Active
DAkkS D-ML-13179-01-00 Mönchengladbach, DE
Thrombozytenaggregation (Multiplate) Spezifisches Gewicht Aceton Benzol + 3 more
View Profile

MVZ Düsseldorf-Centrum

Active
DAkkS D-ML-22009-01-00 Düsseldorf, DE
Vitamin A Vitamin A, Vitamin E Vitamin C Vitamin B2 (FAD) Vitamin B1 + 3 more
View Profile

MVZ GANZIMMUN

Active
DAkkS D-ML-13151-01-00 Mainz, DE
16-Hydroxyestron 17-Hydroxypregnenolon 17-Hydroxyprogesteron 2-Hydroxyestron 2-Methoxyestron + 3 more
View Profile

MVZ Gemeinschaftslabor Cottbus

Active
DAkkS D-ML-19676-01-00 Cottbus, DE
Homocystein Katecholamine Vitamin A Vitamin B1 Vitamin B6 + 3 more
View Profile

MVZ Labor Bochum MLB

Active
DAkkS D-ML-19670-01-01 Bochum, DE
MN (mononukleare Zellen) Blutbild klein Thrombozyten Hämoglobin Natriumchlorid + 3 more
View Profile

MVZ Labor Dortmund Leopoldstraße

Active
DAkkS D-ML-21851-01-00 Dortmund, DE
Basophile Eosinophile Erythrozyten Hämatokrit Hämoglobin + 3 more
View Profile

MVZ Labor Limbach & Kollegen eGbR Standorte: Im Breitspiel 16, 69126 Heidelberg; Im Breitspiel 15, 69126 Heidelberg; Collinistr. 11, 68161 Mannheim

Active
DAkkS D-ML-13176-01-01 Heidelberg, DE
Hämoglobin 11-Desoxycorticosteron 11-Desoxycortisol 17-Hydroxyprogesteron 17-OH-Pregnenolon + 3 more
View Profile

MVZ Labor Quade & Kollegen

Active
DAkkS D-ML-17419-01-01 Köln, DE
Thrombozytenfunktion Carbamazepin-epoxid Levetiracetam Phenytoin Pregabalin + 3 more
View Profile

MVZ Labor Reising-Ackermann und Kollegen

Active
DAkkS D-ML-13231-01-00 Leipzig, DE
Hämoglobin, frei Thrombozytenaggregation Thrombozytenfunktion (Verschlusszeit) 3-Methoxytyramin + 3 more
View Profile

MVZ Labor Essen Nienkampstraße

Active
DAkkS D-ML-22051-01-00 Essen, DE
5-Hydroxyindolessigsäure, linsäure, Vani Adrenalin Amiodaron, Desmethylamiodaron Clozapin, Norclozapin Dopamin + 3 more
View Profile

MVZ Labor Greifswald

Active
DAkkS D-ML-18055-01-00 Greifswald, DE
HbA1c Retikulozyten Leukozytendifferenzierung, Leukozyten Blutbild (Hämatokrit, Erythrozyten, Thro Natrium + 3 more
View Profile

MVZ Labor Krone

Active
DAkkS D-ML-13256-01-01 Bad Salzuflen, DE
4-Hydroxy-Tamoxifen 4-Methyl-Aminoantipyrin 6-MAM 7-amino-Clonazepam 7-amino-Flunitrazepam + 3 more
View Profile

No matching labs found.

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

Other Test Methods

0 labs selected
Compare