acoustic ohm

(acoustics) The unit of acoustic impedance. Also known as acoustic reactance unit; acoustic resistance unit.

acoustics. Symbol ac ohm. (Metric) A unit for the impedance to the flow of sound energy (e.g. by a constricting orifice); quantitatively the ratio of the average effective sound pressure (assuming harmonic quantities) to the volume velocity (i.e. area times speed orthogonally thereto) through it
[Frederick H. A. J. Acoust. Soc. Amer. Vol. 9, 60-71 (1937)] - a parallel of the electric ohm (but compare mechanical ohm
[Kennelly A. G., Cook J. H. J. Acoust. Soc. Amer. Vol. 9, 336-40 (1938)]). E.g.

Metric-m.k.s. Pa·(m²·m·s^-1)^-1 = N·m^-2·(m^-1·s¹) = N·s·m^-3 = m^-2·kg·s^-1,

Metric-c.g.s. dyn·cm^-2·(cm²·cm·s^-1)^-1 = dyn·s·cm^-3 = cm^-2·g·s^-1.