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Post by rammohank on Sept 4, 2004 12:34:51 GMT -5
Dear Madam, First of all let me thnak you for bringing up such a great idea of a
site for communication topics.
My question is, what property of FM does allow us to transmit Fm sterio where it is not possible with AM.
Looking forward for your reply,
rammohan
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Post by charan langton on Sept 4, 2004 19:36:15 GMT -5
FM is not inherently a stereo signal. What makes a signal stereo is that different signal is being received by each ear. There is a regular FM and there is a stereo FM. In stereo FM, there is a Left channel and Right channel, each carry slightly different signals. The brain combines these and hears it as a stereo signal.
The fact that signal is frequency modulated or amplitude makes no difference. Our ears cannot tell the difference. What we hear is the baseband signal, after the carrier has been removed. This is where the stereo aspect comes in. And this happens if the initial recording is made on atleast two channels, each receving slightly different music. When these channels are transmitted and then received separately they feel stereophonic.
Charan Langton
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