Editing Channel noise level

{{Short description |Noise measurement in telecommunications}}
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In [[telecommunications]], the term '''channel noise level''' has the following meanings:

#The ratio of the [[Noise (electronics)|noise]] in the [[communication channel]] at any point in a [[transmission system]] to an arbitrary level chosen as a reference.{{efn|The channel [[Noise (electronics)|noise level]] may be expressed in (a) [[decibel|dB]] above [[reference noise]] ([[dBrn]]), (b) dB above reference noise with [[C-message weighting]] ([[dBrnC]]), or (c) adjusted dB ([[A-weighting|dBa]]).}}{{efn|Each unit used to measure channel noise level reflects a [[Telecommunication circuit|circuit]] noise reading of a specialized instrument designed to account for different [[Interference (communication)|interference]] effects that occur under specified conditions.}}
#The noise [[power spectral density]] in the frequency range of interest.
#The average noise power in the frequency range of interest.

== See also ==
* [[Ambient noise level]]

==Notes==
{{Notelist}}

==References==
{{Reflist}}
*{{FS1037C MS188}}

[[Category:Noise (electronics)]]