KNMI has developed a microbarometer (KNMI-mb) to measure infrasound. This KNMI-mb is sensitive to air pressure fluctuations in the frequency range of 0.002 to 20 Hz with amplitudes between hundredths to tens of pascals. Arrays of microbarometers are deployed to increase the signal-to-noise ratio of the measurements through signal summation. Furthermore, events can be automatically detected by applying array processing techniques.

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• L.G. Evers and H.W. Haak, The Characteristics of Infrasound, its Propagation and Some Early History
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