A Real Sinusoid: The DNA of Signals

Explore how a real sinusoid comes from two complex sinusoids and forms the basis for the spectrum of any signal.

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A complex sinusoid rotating with time in the IQIQ plane generates two real sinusoids. The question now is to produce only one real sinusoid in the complex IQIQ plane. We start with the math and then code the expressions for visualization.

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