ISO 3743-1

Sound power — reverberation field engineering method

ISO 3743-1 specifies the reverberation room method for determining sound power levels of noise sources, suitable for smaller sources or laboratory environments where sound pressure is measured in a reverberant acoustic field. The method is applicable across a wide frequency range and is commonly used for equipment testing, product compliance assessment, and environmental noise impact studies. This engineering-level method balances accuracy with practical testing constraints and is widely required for EU noise directive compliance and product CE marking. Accreditation demonstrates laboratory control of environmental conditions, proper instrumentation calibration, and competence in complex acoustic data analysis.

What it measures

  • Sound power level (Lw) using sound pressure in reverberation room
  • A-weighted and frequency-weighted sound power
  • Octave band sound power levels (31.5 Hz to 8 kHz)
  • Sound power uncertainty and test environment correction
  • Directional sound power characteristics
🇩🇪 DIN EN ISO 3740 🇬🇧 BS EN ISO 3740 🇫🇷 NF EN ISO 3740 🇮🇹 UNI EN ISO 3740 🇪🇸 UNE EN ISO 3740 🇳🇱 NEN EN ISO 3740 🇩🇪 DIN EN ISO 3744 🇬🇧 BS EN ISO 3744 🇫🇷 NF EN ISO 3744 🇮🇹 UNI EN ISO 3744 🇪🇸 UNE EN ISO 3744 🇳🇱 NEN EN ISO 3744
1,868 Accredited labs
20 Countries

Showing 251–275 of 906 labs

DAkkS D-K-11332-01-02 Leipzig, DE
Kraft 10 kN Sound power — survey method (ISO 3746) Radaufstandskraft- 10 kN Prüfkraftmesseinrichtung Länge 10 mm
View Profile
DAkkS D-PL-20186-01-00 Düsseldorf, DE
DIN EN 61800-5-1: 2017
View Profile
DAkkS D-ML-13224-01-01 Berlin, DE
HbA1c Vitamin A Vitamin B1 Vitamin B2 Vitamin B6 + 3 more
View Profile
DAkkS D-ML-20687-01-00 Berlin, DE
Thrombozytenaggregometrie Drogen- und Medikamentenscreening Freie Fettsäuren Linolensäure, Eicosapentaensäure + 3 more
View Profile
DAkkS D-PL-17729-01-00 Stendal, DE
DIN EN ISO 5667-1 (A 4) DIN 38402-A 11 DIN 38402-A 12 DIN 38402-A 13 DIN ISO 5667-5 (A 14) + 3 more
View Profile
DAkkS D-PL-13119-02-01 Dresden, DE
ASTM F1978 ASTM G195 DIN EN ISO 4287 DIN EN ISO 4288 DIN EN ISO 5470-1 + 3 more
View Profile
DAkkS D-K-13119-01-01 Dresden, DE
Temperaturanzeigegeräte –100 °C - Thermopaare, Thermoelemente Typ J, K und N für Widerstands- –100 °C - Direktanzeigende Thermometer + 3 more
View Profile
DAkkS D-ML-13142-01-01 Berlin, DE
Fettsäureprofil der Erythrozytenmembran Kurzkettige Fettsäuren MMA (Methylmethacrylat) Gesamtporphyrine + 3 more
View Profile
DAkkS D-ML-13142-02-01 Potsdam, DE
Hämoglobin A1c (HbA1c) Differenzialblutbild Erythrozyten Erythroblasten (NRBC) Hämatokrit + 3 more
View Profile
DAkkS D-ML-13089-01-00 Frankfurt (Oder), DE
HbA1c Eosinophile, Basophile, MCV, MCH) Retikulozyten Urinsediment Elektrolyte (Kalium, Natrium, Chlorid) + 3 more
View Profile
DAkkS D-K-15027-01-00 Düsseldorf, DE
Plasma, Serum, Plasma 0,5 mmol/L Plasma, Serum, Plasma 50 mmol/L Plasma, Serum, Plasma Material Urin + 3 more
View Profile
DAkkS D-PL-12107-01-00 Berlin, DE
IEC 62271-1: 2017-07 DIN EN 62271-1 VDE 0671-1 IEC 62271-100: 2021 VDE 0671-100 + 3 more
View Profile
DAkkS D-PL-14160-01-01 Aschaffenburg, DE
DIN EN 1230-1 EN 1230-2 DIN 10955 DIN ISO 8784-1 DIN 54378 + 3 more
View Profile
DAkkS D-PL-20393-01-00 Wiesbaden, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN ISO 3741 DIN EN ISO 3743-2 + 3 more
View Profile
DAkkS D-PL-18192-01-00 Oldenburg, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN SPEC 45653 ISO 18406
View Profile
DAkkS D-PL-11283-01-01 Seevetal, DE
ISO 6508-1 Charpy impact test (ISO 148-1) Tensile testing of metallic materials (I BS EN ISO 9015-2 BS EN ISO 9016:2022 + 3 more
View Profile
DAkkS D-K-12001-01-01 Ottobrunn, DE
- Gleichstromwiderstand / Messgeräte Quellen >100 Ω > 10 kΩ + 3 more
View Profile
DAkkS D-PL-19220-01-00 Wiesbaden, DE
DIN EN ISO 9614-3 DIN EN ISO 11200 DIN EN ISO 11202 DIN EN ISO 11203 DIN EN ISO 11205 + 3 more
View Profile
DAkkS D-PL-14332-01-01 Frankfurt am Main, DE
DIN 38402-A 11 DIN 38402-A 12 DIN 38402-A 13 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) + 3 more
View Profile
DAkkS D-PL-11044-01-01 Dresden, DE
IEC 61400-12-1 IEC 61400-50 IEC 61400-50-1 IEC 61400-50-2 ISO 9613-2
View Profile
DAkkS D-PL-20642-01-00 Kronshagen, DE
DIN EN 61400-11 IEC 61400-11 Edition 3.0 IEC 61400-11 Edition 3.1
View Profile
DAkkS D-PL-12023-01-01 Darmstadt, DE
DIN 56912 DIN EN 12198-1 DIN EN 12198-2 DIN EN 12198-3 DIN EN 60825-1 + 3 more
View Profile
DAkkS D-PL-17201-01-00 Rheinmünster, DE
ISO 17987-6 ISO 17987-7 ISO 16845
View Profile
DAkkS D-K-20838-01-02 Bietigheim, DE
Taupunkttemperatur Railway braking — urban guided transport Railway vehicle body structural requirem Railway bogies — wheelsets and bogies st Elektrische + 3 more
View Profile
DAkkS D-PL-14095-03-02 Hamburg, DE
DIN 38402-A 12 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) DIN EN ISO 19458 (K 19) DIN 19643-1 + 3 more
View Profile

No matching labs found.

Industries

Power tool and equipment manufacturers Laboratory and medical device makers Small machinery producers Consumer electronics manufacturers Heating and ventilation equipment suppliers

Related Standards

  • ISO 3740 Acoustics — Determination of sound power levels of noise sources — General guidelines
  • ISO 3744 Acoustics — Determination of sound power levels of noise sources — Engineering method using an enveloping surface
  • ISO 354 Acoustics — Measurement of sound absorption coefficient in a reverberation room

Other Test Methods

0 labs selected
Compare