Decibel (dB)
Term | Main definition |
---|---|
Decibel (dB) |
A standard unit used to express a relative measurement
of signal strength or to express gain or loss in optical or
electrical power. A unit of measure of signal strength,
usually the relation between a received signal and a
standard signal source. The decibel scale is a logarithmic
scale, expressed as the logarithmic ratio of the strength
of a received signal to the strength of the originally
transmitted signal. For example, every 3dB equals 50
percent of signal strength, so therefore a 6dB loss equals
a loss of 75 percent of total signal strength. See Chapter 1
for more information.
Hits - 1175
|