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Pulse-amplitude modulation
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{{short description|Form of signal modulation where information is encoded in the amplitude of a series of pulses}} {{Use American English|date=February 2020}} [[File:PAM neutral.svg|class=skin-invert-image|thumb|Principle of PAM: (1) original signal, (2) PAM signal, (a) amplitude of signal, (b) time]] {{Modulation techniques}} '''Pulse-amplitude modulation''' ('''PAM''') is a form of signal [[modulation]] in which the message information is encoded in the [[amplitude]] of a [[pulse train]] interrupting the carrier frequency. Demodulation is performed by detecting the amplitude level of the carrier at every single period.
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