A new method for axial p-v probe calibration

A full bandwidth absolute calibration of axial p-v probes using progressive plane waves as a reference field is here proposed. The sound field has been obtained by means of an 84 m long, 2 cm wide one-dimensional wave guide installed, in a joint effort with the Italian Re-search Council, at the LARIX Laboratory, Department of Physics, University of Ferrara. The calibration process consists of two stages: the first one, when the pressure sensor of the inten-simetric probe (in our case a match size Microflown® probe) is calibrated in the reference field by comparison with a standard pressure microphone, and the second one, when the rela-tive calibration of the pressure-velocity sensors of the probe, is done, thanks to theoretically known energetic properties of the reference field. A brief discussion of obtained results is outlined in the paper.