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Five poor summers in a row
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An Inspector Calls
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Joined: 27 Jan 2011
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PostPosted: Sun Sep 04, 2011 7:06 pm    Post subject: Reply with quote

In the example here, a Fourier transform would translate your signal from the time domain to the frequency domain. If you had a pure sine wave displayed on an oscilloscope you'd be looking at the signal in the time domain - Fourier transform that signal to the frequency domain and you'd get a single spike at the frequency of the sinewave - you're now in the frequency domain. Putting the time domain waveform shown above through a Fourier Transform would bring out all the periody rather well.
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