Sound energy density
- Sound pressure
- SPL
- Sound velocity
- Schallauslenkung
- Sound acceleration
- Sound intensity
- Sound power
- Sound energy density
- Sound energy
- Sonic flow
- Acoustic impedance
- Speed of sound
The sound energy density (symbol E or w ) is a measure used to describe the existing at a particular location of the sound field sound energy. It is a sound energy quantity. The corresponding logarithmic size of the sound energy density level.
Definition
The acoustic energy density, E is the sound energy per unit volume
It provides information about the sound energy W at a particular location of a sound field and its energy density.
The unit of sound energy density is joule per cubic meter ( J/m3 ).
In the special case of plane progressive wave is the time-averaged acoustic energy density:
Where I is the intensity and c is the speed of sound.
Sound energy density level
The reference value is defined with J/m3 or W · s/m3.
Correlations in the plane wave
Other formulas for sound energy density in flat, progressive sound waves:
Where: