What is Modulation?
'''Modulation''' can mean: * [[Modulation (music)]], the changing of a piece of music from one [[key (music)|key]] to another. * [[Modulation (mathematics)]], the remainder of a division * [[Frequency Modulation]] (FM) or [[Amplitude Modulation]] (AM), ways to send analog radio signals. * [[Phase-shift keying]] and frequency-shift keying, ways to send digital signals. {{disambig}}