Equations in Terms of Other Measurements
The velocity v can be related to the particle displacement (xi) and acceleration for single frequency plane wave of frequency f using
It is further related to the instantaneous acoustic intensity vector I (not the time-averaged acoustic intensity) according to
Symbol | Units | Meaning |
---|---|---|
v | m/s | particle velocity |
ξ | m, meters | particle displacement |
ω = 2πf | radians/s | angular frequency |
f | Hz, hertz | frequency |
p | Pa, pascals | sound pressure |
Z | N·s/m³ | acoustic impedance |
E | W·s/m³ | sound energy density |
Pac | W, watts | sound power or acoustic power |
A | m² | area |
a | m/s² | particle acceleration |
kg/m³ | air density |
Read more about this topic: Particle Velocity
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