Open CASCADE Technology
7.4.0

#include <Standard_Real.hxx>
Typedefs  
typedef Standard_Real  Quantity_SoundIntensity 
Defined as the rate of flow of sound energy through a unit area normal to the flow. It is quantified as the square of the rootmeansquare sound pressure, divided by the density of the medium and by the speed of sound. It is measured in watts per square metre. More...  
typedef Standard_Real Quantity_SoundIntensity 
Defined as the rate of flow of sound energy through a unit area normal to the flow. It is quantified as the square of the rootmeansquare sound pressure, divided by the density of the medium and by the speed of sound. It is measured in watts per square metre.