Decibel vs Dbm - What's the difference?
decibel | dbm | abbreviation |
A common measure of sound intensity that is one tenth of a bel on the logarithmic intensity scale. It is defined as dB = 10 * log10(P 1/P 2), where P1 and P2 are the relative powers of the sound.
The power ratio in decibels (dB) of the measured power referenced to one milliwatt (mW).