Instead of using sines and cosines, we can expand a signal as a series of sine waves of arbitrary phase. If
we specify the magnitude and phase of each sine wave, we can approximate a periodic function just as
well as if we use sines and cosines. Sines and cosines of the same frequency differ only by a phase shift,
and any combination of two such waves can be expressed as a single cosine wave of appropriate phase and
magnitude. Click the **Sine**, **Cosine**, and **Phase Shift** buttons to see this. Click the
**Mag/Phase View** checkbox to toggle between the two representations.

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Previous: Sine/Cosine

Index

Generated Wed May 17 2017