Which of the following describes combining speech with an RF carrier signal?
Impedance matching
Oscillation
Modulation✓Ճիշտ պատասխան
Low-pass filtering
Բացատրություն
Impressing information such as speech onto a carrier by varying one of the carrier's properties, its amplitude, frequency or phase, is precisely what modulation means. Impedance matching and filtering do not add information to the carrier.