In communications terminology, ____ means changing the characteristics of a signal, as when a modem changes a digital pulse into an analog audio signal.
A) resonance
B) amplification
C) demodulation
D) modulation

Question

Quizplus · Accepted Answer

Modulation is the process of changing the characteristics of a signal to transmit information through a transmission medium. In this case, a modem changes digital pulses into an analog audio signal through modulation. Resonance refers to the amplification of a signal at a resonant frequency, and amplification refers to increasing the amplitude of a signal. Demodulation is the reverse process of modulation, where a received signal is converted back to its original form.

In Communications Terminology, ____ Means Changing the Characteristics of a Signal