And you can see on this figure, that the frequency range and the decibel range, the dynamic range of music is far more heterogeneous.

The decibel watt or dBW is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt.

dBm (sometimes dBmW or Decibel milliwatts) is an abbreviation for the power ratio in decibels (dB) of the measured power referenced to one milliwatt (mW).

As is the case for the decibel and bel, the neper is unit of the International System of Quantities (ISQ), but not part of the International System of Units (SI), but it is accepted for use alongside the SI.