Open CASCADE Technology
7.5.0

#include <Standard_Real.hxx>
Typedefs  
typedef Standard_Real  Quantity_AcousticIntensity 
Defined as a dimensionless comparison of sound pressure levels. The conventional unit, the bel, is the base ten logarithm of the ratio of the two pressures. In practice the decibel (one tenth of a bel) is used. More...  
Defined as a dimensionless comparison of sound pressure levels. The conventional unit, the bel, is the base ten logarithm of the ratio of the two pressures. In practice the decibel (one tenth of a bel) is used.