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(2pts) In _______________, the pulse amplitude is made proportional to the amplitude of the modulating signal. pulse-amplitude modulation (PAM) pulse-position modulation (PPM) pulse-code modulation (PCM) pulse-width modulation (PWM)

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sqdancefan

Answer:

  (a)  pulse-amplitude modulation (PAM)

Explanation:

It should be no surprise that pulse amplitude is modulated in pulse-amplitude modulation (PAM).