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Modulation index
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The '''modulation index''' (or '''modulation depth''') of a [[modulation]] scheme describes by how much the modulated variable of the carrier signal varies around its unmodulated level. It is defined differently in each modulation scheme. *[[amplitude modulation#Modulation index|Amplitude modulation index]] *[[frequency modulation#Modulation index|Frequency modulation index]] *[[phase modulation#Modulation index|Phase modulation index]] {{SIA}}
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