Thursday, February 16, 2012

Acoustic impedance

For baby amplitudes, complete burden and atom acceleration are linearly accompanying and their arrangement is the acoustic impedance. The acoustic impedance depends on both the characteristics of the beachcomber and the manual medium.

The acoustic impedance is accustomed by1

Z = \frac{p}{U}

where

Z is acoustic impedance or complete impedance

p is complete pressure

U is atom velocity

edit Atom displacement

Sound burden p is affiliated to atom displacement (or atom amplitude) ΞΎ by

\xi = \frac{v}{2 \pi f} = \frac{v}{\omega} = \frac{p}{Z \omega} = \frac{p}{ 2 \pi f Z} \, .

Sound burden p is

p = \rho c 2 \pi f \xi = \rho c \omega \xi = Z \omega \xi = { 2 \pi f \xi Z} = \frac{a Z}{\omega} = c \sqrt{\rho E} = \sqrt{\frac{P_{ac} Z}{A}} \, ,

normally in units of N/m² = Pa.

where:

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