Signals and Sinusoids

This is an unevaluated Mathematica notebook. If you do not have a copy of Mathematica handy, you may want to also view the evaluated version

by David Messerschmitt

What is a signal?

What is a sinusoid?

Modulation of a sinusoid

Why are sinusoids important?

Audio demonstration: frequency, phase, frequency modulation

Superposition of sinusoids: frequency domain

Periodic signals

Audio demonstration: superposition of sinusoids

Key points you have learned

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