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

Famous quotes containing the words sound and/or energy:

    “Letters are like wine; if they are sound they ripen with keeping. A man should lay down letters as he does a cellar of wine.”
    —Samuel Butler (1835–1902)

    “Just as we are learning to value and conserve the air we breathe, the water we drink, the energy we use, we must learn to value and conserve our capacity for nurture. Otherwise, in the name of human potential we will slowly but surely erode the source of our humanity.”
    —Elaine Heffner (20th century)