To recover the amplitude information, the receiver section includes an amplitude detector such as {TAIL ~ an envelope detector}, {HEAD ~ a low pass filter}, etc 
To recover the amplitude information , the receiver section includes an amplitude detector such as { TAIL ~ an envelope detector } , { HEAD ~ a low pass filter } , etc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH