Sound Power - Sound Power With Plane Sound Waves

Sound Power With Plane Sound Waves

Between sound power and other important acoustic values there is the following relationship:

P_\mathrm{ac} = \xi^2 \cdot \omega^2 \cdot Z \cdot A = v^2 \cdot Z \cdot A = \frac{a^2 \cdot Z \cdot A}{\omega^2} = \frac{p^2 \cdot A}{Z} = E \cdot c \cdot A = I \cdot A\,

where:

Symbol Units Meaning
p Pa sound pressure
f Hz frequency
ξ m particle displacement
c m/s speed of sound
v m/s particle velocity
ω = 2πf rad/s angular frequency
ρ kg/m3 density of air
Z = c · ρ N·s/m³ acoustic impedance
a m/s² particle acceleration
I W/m² sound intensity
E W·s/m³ sound energy density
Pac W sound power or acoustic power
A m² area

Read more about this topic:  Sound Power

Famous quotes containing the words sound, power, plane and/or waves:

    “The spotted hawk swoops by and accuses me, he complains of my gab and my loitering.

    I too am not a bit tamed, I too am untranslatable,
    I sound my barbaric yawp over the roofs of the world.”
    —Walt Whitman (1819–1892)

    “‘Tis a sort of duty to be rich, that it may be in one’s power to do good, riches being another word for power.”
    —Mary Wortley, Lady Montagu (1689–1762)

    “We’ve got to figure these things a little bit different than most people. Y’know, there’s something about going out in a plane that beats any other way.... A guy that washes out at the controls of his own ship, well, he goes down doing the thing that he loved the best. It seems to me that that’s a very special way to die.”
    —Dalton Trumbo (1905–1976)

    “The waves have now a redder glow—
    The hours are breathing faint and low—
    And when, amid no earthly moans,
    Down, down that town shall settle hence,
    Hell, rising from a thousand thrones,
    Shall do it reverence.”
    —Edgar Allan Poe (1809–1849)