The ½ inch PU regular is a sound probe combining two sensors: a traditional microphone and a microflown. Directly at one spot the sound pressure and acoustic particle velocity are measured. Any sound field is described by two complementary acoustic properties, the scalar value ‘sound pressure’ and the vector value ‘particle velocity’. In the acoustic near field, acoustic particle velocity is the dominant acoustic property. The Microflown is the only sensor which physically can measure the acoustic particle velocity directly.
Pu probes are designed to measure: