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:

    “This teaching is not practical in the sense in which the New Testament is. It is not always sound sense in practice. The Brahman never proposes courageously to assault evil, but patiently to starve it out. His active faculties are paralyzed by the idea of caste, of impassable limits of destiny and the tyranny of time.”
    —Henry David Thoreau (1817–1862)

    “and men strive with each other not for power or the accumulation of paper
    but in joy create for others the house, the poem, the game of
    athletic beauty.

    Then washed in the brightness of the vision,
    I saw how in its radiance would grow and be nourished and suddenly
    burst into terrible and splendid bloom
    the blood-red flower of revolution.”
    —Dudley Randall (b. 1914)

    “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)

    “Dr. Scofield’s equipment, which you have just seen, radiated waves direct to Professor Houghland’s laboratory. When these waves came in contact with those the professor’s equipment was radiating, they created the interstellar frequency, which is the death ray.”
    —Joseph O’Donnell, and Clifford Sanforth. Arthur Perry (Bela Lugosi)