Definitions for "Ambient noise"
Any noise exclusive of an intentional signal in a test room environment. The noise may come from outside or from within the room.
The existing noise in a transmission media. In telephone lines, this is usually heard as the background "hiss" & is due to electrical signals traveling down the line. Also called "background" or "white" noise.
background noise that is normally ignored.
Communications interference that is present in a signal path at all times.