virajtolia
New Member
hello friends..........
pls i want clear explanation of modulations. pls help me.![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
pls i want clear explanation of modulations. pls help me.
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Hero999 said:Please be more specific.
Are you talking about AM or FM?
Then we could talk about DSB SSB, SSBSC, PM, PFM, FSK. . .
Have you searched Google and Wikipedia?
This is a gross oversimplification, but think about it as multiplying two signals together. To see what happens, take two sinusoids of different frequencises and multiply them together. Then ask yourself, "What frequencises are present in the product waveform". There are four of them, now your homework is to tell us what they are. The tigonometry is moderately tough, but you asked the question.virajtolia said:hello friends..........
pls i want clear explanation of modulations. pls help me.![]()
sin(at) * sin(bt) = ?
for frequencies a, b such that a != b