Calibration effects on the measure of sound wave conductance

The recent commercialisation of a new generation of MEMS-based PU probes has promoted the development of new methodologies for their calibration whose effects on measured energetic quantities can be directly compared with measurement results obtained using the nominal calibration provided by the manufacturer. This communication just reports about calibration effects on the quantity called "sound wave conductance" [D. Stanzial and G. Schiffrer, "On the connection between energy velocity, reverberation time and angular momentum", Journal of Sound and Vibration Vol. 329, 2010, pp. 931-943] when measured by means of a commercially available PU probe using its nominal calibration and the calibration performed using a methodology recently proposed by the authors. The sound wave conductance has been here calculated as the line integral of the normalized ratio of sound intensity to mean energy density and the relative calibration error affecting this quantity has been estimated.