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Question: Answered & Verified by Expert
A male voice after modulation-transmission sounds like that of a female to the receiver. The problem is due to
PhysicsCommunication System
Options:
  • A
    poor selection of modulation index (selected $0 < \mathrm{m} < $ 1)
  • B
    poor bandwidth selection of amplifiers
  • C
    poor selection of carrier frequency
  • D
    loss of energy in transmission
Solution:
2080 Upvotes Verified Answer
The correct answer is:
poor bandwidth selection of amplifiers
We know that
The frequency of male voice smaller than that of a female voice.
So, the frequency of modulated signal is more than input signal which is possible with the poor bandwidth selection of amplifiers.
This happens because bandwidth in amplitude modulation is equal to twice the frequency of modulated signal.

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