background signal

/ˌbækˈgraʊnd ˌsɪgnəl/
IPA guide

Definitions of background signal
  1. noun
    extraneous signals that can be confused with the phenomenon to be observed or measured
    synonyms: background
    see moresee less
    types:
    background noise, ground noise
    extraneous noise contaminating sound measurements that cannot be separated from the desired signal
    background radiation
    radiation coming from sources other than those being observed
    surface noise
    noise produced by the friction of the stylus of a record player moving over the rotating record
    type of:
    disturbance, interference, noise
    electrical or acoustic activity that can disturb communication
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