Acoustic Ohm

The unit of acoustic impedance, equal to the impedance of a medium in which a sound pressure of one dyne per square centimeter produces a velocity of one centimeter per second.

The sound resistance across a surface in a given medium is defined to be the pressure of the sound wave at the surface divided by the volume velocity, the rate (volume per time) at which the medium is pushed perpendicular to the surface.

The SI unit is: 1 pascal second per cubic meter (Pa s m-3).

See also: Acoustic Impedance, Acoustics, Dyne, Rayl.

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Subjects: Noise & Vibration Units