Db

dB
Short for decibel.
dB FS
Abbreviation for decibels full scale, a unit of power as measured by a digital device.
dBA
A sound-level meter reading with an A-weighting network simulating the human-ear response at a loudness level of 40 phons.
dBaO
In microwave and common carrier systems, a measure of the noise power with reference to zero dBm at the Reference (zero) Transmission Level Point.
dbar
Abbreviation of decibar.
dBB
A sound-level meter reading with a B-weighting network simulating the human-ear response at a loudness level of 70 phons.
dBc
Decibels referenced to the carrier signal.
dBi
Decibels referenced to an isotropic radiator.
dBLi
Decibels referenced to a linear isotropic radiator.
dBm
Decibels referenced to 1 mW.
dBmO
In microwave and common carrier systems, a measure of power with reference to zero dBm at the Reference Transmission Level Point.
dBmOp
In microwave and common carrier systems, circuit noise power measured with an instrument having psophometric weighting.
dBrn
Symbol for decibels above reference noise, a unit measuring noise levels in telecommunications.
dBsm
Decibel referenced to one square meter.
dBu
A logarithmic unit of power, similar to dB m but computed from voltage measurements.
dBv
Decibels referenced to one volt.
dBW
Decibels referenced to 1 watt.
dBZ
A unit of radar reflectivity used in meteorology. The unit measures the amount of energy returned to a weather radar site as a function of the amount transmitted.