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acoustic ohm

unit of measurement
Also known as: pascal second per cubic metre

Quick Summary

The acoustic ohm is a unit of measurement used in acoustics, analogous to the electrical ohm used for electrical resistance. It quantifies acoustic impedance, which is the ratio of sound pressure to volume velocity across a surface. This concept is similar to how electrical impedance measures resistance to alternating current.123

The acoustic ohm is expressed as a complex number, with its real part representing acoustic resistance and its imaginary part representing acoustic reactance. While the term "acoustic ohm" itself is less common, the concept of acoustic impedance is fundamental in understanding sound absorption and transmission in various media.12

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