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A male voice after modulation-transmission sounds like that of a female to the receiver. The problem is due toA. poor selection of modulation index (selected 0 lt m lt 1)B. poor bandwidth selection of amplifiersC. poor selection of carrier frequencyD. loss of energy in transmission |
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Answer» Correct Answer - B The frequency of the female voice (pitch) is more than that of a male voice. In this case male voice after modulation sounds like a female voice in the receiver. This indicates that the frequency at the receiver end is more than that at the transmitter end. This happens due to poor bandwidth selection of the amplifier . In A.M., the bandwidth is twice the frequency of the modulating signal |
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