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
Famous quotes containing the words sound, power, plane and/or waves:
“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 (18351902)
“O power of fantasy that steals our minds from things outside, to leave us unaware, although a thousand trumpets may blow loudwhat stirs you if the senses show you nothing? Light stirs you, formed in Heaven, by itself, or by His will Who sends it down to us.”
—Dante Alighieri (12651321)
“Even though I had let them choose their own socks since babyhood, I was only beginning to learn to trust their adult judgment.. . . I had a sensation very much like the moment in an airplane when you realize that even if you stop holding the plane up by gripping the arms of your seat until your knuckles show white, the plane will stay up by itself. . . . To detach myself from my children . . . I had to achieve a condition which might be called loving objectivity.”
—Anonymous Parent of Adult Children. Ourselves and Our Children, by Boston Womens Health Book Collective, ch. 5 (1978)
“He says the waves in the ships wake
are like stones rolling away.
I dont see it that way.”
—Denise Levertov (b. 1923)