[1] : WordNet (r) 2.0

background signal
     n : extraneous signals that can be confused with the phenomenon
         to be observed or measured; "they got a bad connection
         and could hardly hear one another over the background
         signals" syn: background
see also:
background 

Background >> B Words
Background, definition of term: Background
background_pag1.html

Signal >> S Words
Signal, definition of term: Signal
signal_pag1.html

Signal Light >> S Words
Signal Light, definition of term: Signal Light
signal+light_pag1.html

Background Radi >> B Words
Background Radi, definition of term: Background Radi
background+radi_pag1.html

Signal Flag >> S Words
Signal Flag, definition of term: Signal Flag
signal+flag_pag1.html

Turn Signal >> T Words
Turn Signal, definition of term: Turn Signal
turn+signal_pag1.html

Traffic Signal >> T Words
Traffic Signal, definition of term: Traffic Signal
traffic+signal_pag1.html

Distress Signal >> D Words
Distress Signal, definition of term: Distress Signal
distress+signal_pag1.html

Digital Signal >> D Words
Digital Signal, definition of term: Digital Signal
digital+signal_pag1.html