Sound Power With Plane Sound Waves
Between sound power and other important acoustic values there is the following relationship:
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
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—Shelley Winters (b. 1922)
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—Ralph Waldo Emerson (18031882)
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—For the State of California, U.S. public relief program (1935-1943)
“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 (18091849)