ALL meanings of phase modulation
phase mod·u·la·tion
P p - noun phase modulation radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal. 1
- noun phase modulation a type of modulation, used in communication systems, in which the phase of a radio carrier wave is varied by an amount proportional to the instantaneous amplitude of the modulating signal 0
- noun phase modulation variation in the phase of a carrier wave in accordance with some signal, as speech 0