acoustic mass

6.44  acoustic mass; inertance. At a frequency for which inertial forces are dominant, quotient of sound pressure by the resulting in-phase volume acceleration during sinusoidal motion. Unit, pascal per (cubic meter per second squared) [Pa/(m3/s2)], or...

acoustic impedance

6.41  acoustic impedance. At a specified surface, complex quotient of acoustic pressure by volume velocity through the surface. Unit, pascal per (cubic meter per second) [Pa/(m3/s)]....