Do we need to sample a analog signal before taking FFT for it in MATLAB?

Consider y=sin(t), I want to take the FFT for it.Can I take the FFT for it without sampling? Is that the right way?

Answers (1)

No, if you want to do it without sampling then you should be using Fourier Transform instead of Fast Fourier Transform, as FFT is for discrete data.

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on 25 Sep 2013

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