Uses
The decibel scale is used in numerous physical domains (electronics, acoustics, audio, etc...). As such, this units definition depends on the reference value
and can be distinguished by the use of different symbols
Electronics:
,
...Audio:
,
...Acoustics:
,
,
...
Hence, there are a lot of different decibels, which are not comparable. The use of this type of unit requires a sufficient knowledge of the definition of the considered decibel.
