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Acoustic Impedance

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Specific acoustic impedance is measure of the ability of a medium to transmit sound waves.

It can be expressed as

Z = P / v

   = ρ c                               (1)

where

Z = acoustic impedance (Pa s/m)

p = sound pressure (Pa)

v = particle velocity (m/s)

ρ = density of medium (kg/m3)

c = velocity of sound (m/s)

The equation express the coupling between the vibrating particles in the medium.  

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Related Topics

Acoustics

Room acoustics and acoustic properties. decibel A, B and C calculations. Noise Rating (NR) curves. Sound transmission through walls. Calculate sound pressure, sound intensity and sound attenuation.

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