| Objective: |
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To illustrate sinusoidal waveforms and show the effect of adding
a phase shift. |
| Steps: |
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One cycle of a periodic waveform is described as repeating every
2p radians or every 360°. Alternatively,
we refer to the period T (seconds). |
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Waveforms can be described as either:
even (A(t) = A(-t)) or
odd (A(t) = -A(-t)). |
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A phase shift can be added to a sine or cosine wave. Note how
a sine wave is a delayed cosine (or a cosine is an advanced sine). |
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Trigonometric functions are used frequently when describing
signals. Observe how adding a sine and cosine wave gives an advanced/delayed
cosine. |