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Summary
DescriptionFourier series and transform.gif
English: Function s(t) (in red) is an approximation of a square wave formed from just 6 sine functions of different amplitudes and harmonically-related frequencies. Their summation is called a Fourier series. The Fourier transform, F(w) (in blue), which depicts amplitude vs frequency, reveals the 6 frequencies and their amplitudes.
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File:Fourier transform time and frequency domains (small).gif
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