## Sound and Vibration Terms, Definitions, Units, Measurements ..

**The correct SI Units list**:

**Subject List**

Hz (hertz) = frequency

acoustic impedance = Pa·s/m^{3} (pascal-second per metre-cubed)

flux density = J·s/m^{2} (joule second per metre squared) = W/m^{2}

sound energy = J (joule)

sound energy density = J/m^{3}

sound energy flux density = W/m^{2}

J/kg (joule per kilogram) =

specific energy
J/m^{3} (joule per metre cubed) =

energy density, sound density,

sound energy density
J/s (joule per second) =

power =

watt (W)

kg·m^{2} (kilogram metre-squared) =

moment of inertia
kg/m^{3} (kilogram per metre-cubed) =

density
kg/s (kilogram per second) =

mass flow rate

m^{2} (metre-squared) =

area
m^{3} (metre-cubed) =

volume
m^{3}/kg (metre-cubed per kilogram) =

specific volume.
m^{3}/s (metre-cubed per second) =

volumetric flow
m/s (metre per second) =

speed •

velocity
m/s^{2}) (meter per second-squared =

acceleration
m/s^{3} (metre per second-cubed) =

jerk

N (newton) =

force : SI unit kg·m/s

^{-2}
N·m (newton metre) =

torque (moment of force) = kg·m

^{2}/s

^{2}, also called moment?. Less common use,

energy =

J (joule)
N·m·s (newton metre second) =

angular momentum
N·s (newton second) =

momentum,

impulse
N/m^{2} (newton per metre-squared) =

Pascal.

Pa (pascal) = N/m

^{2} pressure •

sound pressure
Pa·m^{3} (pascal metre-cubed) =

energy and

work, equivalent to the

Joule (J)
Pa·s/m (pascal second per metre) =

specific acoustic impedance

rad/s (radian per second) = angular velocity

rad/s

^{2} (radian per second-squared) = angular acceleration

W (watt) =

power,

sound power
W/m^{2} (watt per metre-squared) =

sound energy flux density •

sound intensity •

sound power density =

J·s/m^{2}
W/m^{3} (watt per metre-cubed) =

power density
W·s (watt second) =

sound energy
W·s/m^{3} (watt second per metre-cubed) =

sound energy density =

J·s/m^{2}

energy flux (1) = W·m^{2} • sound energy flux a specific case

energy flux (2) = W = J/s • total rate of energy transfer>

energy flux density = J/(m^{2}·s) (joule per metre-squared second) or W/m^{2} (watts per metre-squared)

flux density = flux per unit area

kinetic energy = joule (J)

Sound intensity is the average sound energy flowing through a specified point, the SI units are W/m^{2}

sound absorption = sabin

sound energy = J (joule)

sound energy flux = SI units W = J/s : energy flux is defined in 2 different ways. This is the total rate of energy transfer, see also sound energy flux density

sound energy flux density = SI units W/m^{2} : 2019-0823 according to Wiki energy flux is defined in 2 different ways, see also sound energy flux and sound intensity

sound intensity = W/m^{2}

sound pressure = Pascal (Pa)

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