Thursday, April 1, 2010

Periodic Waves and Fourier Transform

A perfectly sinusoidal clock or signal seldom happens in real world. We encounter square waves, sawtooth waves, deteriorated square waves. Cycle after cycle, these waves repeat the same pattern. In other words, the instantaneous value of these waves is same after some fixed amount of period. These waveforms are called periodic waves. The fixed amount of time after which the signal repeats is called period of the wave.
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