The role of envelope detector in an AM receiver is to
retrieve the message signal
rectify the AM signal
modify the AM signal
modulate the message signal
A.
retrieve the message signal
The role of envelope detector in an AM receiver is to retrieve the message signal.
For commercial telephonic communication, the frequency range for speech signals is
50 Hz to 1000 Hz
3000 Hz to 4500 Hz
300 Hz to 3100 Hz
5000 Hz to 6500 Hz