Sound Energy

Sound Energy

Form of energy associated with the vibration or disturbance of matter. Sound is a mechanical wave and as such requires a medium to travel through.

The sound energy in a volume of interest is defined as the sum of the potential and kinetic energy densities integrated over that volume:

W = W_\mathrm{potential} + W_\mathrm{kinetic} = \int_V \frac{p^2}{2 \rho_0 c^2} dV + \int_V \frac{\rho v^2}{2} dV

With

  • – the volume, or region of 3-space, of interest
  • – sound pressure
  • – particle velocity
  • – density of the medium without sound present
  • – local density of the medium
  • – sound speed

Read more about Sound Energy:  See Also

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