| frequency band occupied by one signal or by a number of multiplexed signals at specified input and output points of a transmission system
Note 1 to entry: In radiocommunication, the baseband is that frequency band occupied by the signal modulating the radio transmitter.
Note 2 to entry: When the transmission involves multiple modulation, it is generally considered that the baseband is that frequency band occupied by the signal which is applied to the first modulation stage, and not the frequency band occupied by an intermediate modulated signal.
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