As in not digital. An analogue signal in an electrical facsimile of the item being represented. For example, when playing a stereo DVD, the analogue audio outputs of a DVD player trace an electrical curve that is identical, other than in sheer power, to the electrical curve that the amplifier will deliver to the speakers and this, in turn, is identical to the pattern of sound waves the speaker will create, except for distortions that creep into the system. An analogue signal can have any value within set limit, while a digital signal is constrained to a set of discrete values.