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What are the three frequencies in an amp...

What are the three frequencies in an amplitude modulated wave? What are LSB and USB?

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In an amplitude modulated wave, the three
frequencies are `v_c, v_c-v_m:v_c+v_m`. LSB stands
for lower side band of frequency `(v_c-v_m)`. USB
stands for upper side band of frequency
`(v_c + v_m)`.
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