Sound measurements

Emissionsmessung WEA Grenzflaechenmikrofon

Numerous standards exist that deal with the determination of sound levels. Sound power levels can be determined according to, for example, the DIN EN ISO 3740 series, the DIN EN ISO 9614 series or other standards such as DIN EN 61400-11 that cover individual types of sound sources such as wind turbines.

Determination of sound power level at a
wind turbine using an interfacial microphone


Several measurements need to be performed in any weather condition. For such conditions we use an outdoor microphone.At high wind speeds we use a secondary windshield to reduce wind-induced noise.

Wetterfeste Mikrofoneinheit

In Germany, sound immissions in residential areas caused by commercial activities are being measured according to TA Lärm in connection with, for example, DIN 45645-1, while for the determination of the emission sound pressure level at the workplace, standards of the DIN EN ISO 11200 series apply, and for measuring the daily sound exposition level according to the order for health and safety at work concerning noise and vibrations (“Lärm- und Vibrations-Arbeitsschutzverordnung”), DIN EN ISO 9612 is used.
We are a notified testing laboratory for noise measurements in accordance with § 29b of the Federal Immission Protection Act and accredited according to DIN EN ISO/IEC 17025 and thus can support you in measuring almost all kinds of sound sources according to a multitude of standards.

Remark: No warranty is accepted concerning the currentness of the standards mentioned.


Sound-related acceptance controls and monitoring measurements according to TA Lärm:

Determination of sound emission of machines and plants:

Determination of sound exposition at the workplace:

Building and room acoustics:

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