Metrological provision of infrasound level measurements

It is demonstrated that the response of the vibratory systems of living organisms to acoustic effects depends not only on the sound pressure level (which is predominantly subject to sanitary regulations), but also on the vibration velocity of the particles moving under the sound pressure gradient and the amplitude of their displacement from the equilibrium position. The conclusion is therefore drawn that to correctly regulate sound levels in the low-frequency region, it is necessary to measure simultaneously the sound pressure and the vibration velocity of the particles of the medium.