Decibels
The unit of sound loudness is the decibel (dB). It is a logarithmic scale that measures the intensity or volume of sound.
A decibel.
Decibels are the scale used for measuring the volume of sounds.
The volume of a sound is measured by the sound pressure in pascals or newtons per square meter. The sound pressure level is measured by a sound pressure level meter (SPL meter).
That is commonly measured in decibels.
More decibels means that the sound volume increases.
Sound energy density or sound density is the sound energy per unit volume (according to Wikipedia).
The volume of a sound wave is related to its amplitude, which is the height of the wave. A higher amplitude results in a louder sound, while a lower amplitude produces a softer sound. The unit used to measure the volume of a sound wave is decibels (dB).
Decibles, or a decible, is the unit of measure when measuring sound volume. For example, in a concert, the volume can be over 500 decibles.
The unit for measuring the volume of sound is the decibel.
If I understand the question, it isn't possible to convert dB (a unit of sound energy) to litres (a unit of volume).
There are two: the bel, or more commonly, the decibel, which is a logrithmic representation of the pressure of a sound, and the phon, which is a measure of how loud a sound is perceived.