Sound power level determination — general measurement guidelines
ISO 3740 provides overarching principles and guidelines for selecting appropriate methods to determine sound power levels of noise sources across diverse industrial and consumer applications. It establishes the framework for choosing between precision, engineering, and survey methods based on application requirements and environmental conditions. Sound power determination is essential for manufacturers complying with noise emission directives, environmental impact assessments, and product labeling regulations across the EU. ISO 17025 accreditation ensures laboratories apply correct methodologies, maintain calibrated instrumentation, and report results with documented uncertainty traceable to primary standards.
cartridges, based on HTM 20309.201 to 9.212 and BS EN ISO35 °C/3 days based on HTM 2030section 9.201 to 9.212, BS ENISO 15883-1:2009 6.4.2.3 and+ 3 more
Machinery and equipment manufacturingHVAC and ventilation systemsPower generation equipmentConstruction and demolition equipmentConsumer appliance manufacturers
Related Standards
ISO 3743-1Acoustics — Determination of sound power levels of noise sources — Part 1: Reverberation room method
ISO 3744Acoustics — Determination of sound power levels of noise sources — Engineering method using an enveloping surface
ISO 3745Acoustics — Determination of sound power levels of noise sources — Precision method using an enveloping surface
Scope