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:

    “How good bad music and bad reasons sound when we are marching into battle against an enemy.”
    —Friedrich Nietzsche (1844–1900)

    “The quality of the will to power is, precisely, growth. Achievement is its cancellation. To be, the will to power must increase with each fulfillment, making the fulfillment only a step to a further one. The vaster the power gained the vaster the appetite for more.”
    —Ursula K. Le Guin (b. 1929)

    “As for the dispute about solitude and society, any comparison is impertinent. It is an idling down on the plane at the base of a mountain, instead of climbing steadily to its top.”
    —Henry David Thoreau (1817–1862)

    “Each day a few more lies eat into the seed with which we are born, little institutional lies from the print of newspapers, the shock waves of television, and the sentimental cheats of the movie screen.”
    —Norman Mailer (b. 1923)