Suppose I have a fourier transform $X(f)$ of an energy signal $x(t)$. Now how do I interpret that continuous fourier transform plot. For example if the input signal is a rectangular pulse the fourier tansform is Sinc function. How do I interpret this continuous fourier transform plot?
Here is my understanding: In the case of fourier series, the plot consists of disrete values. Each discrete spike implies a sinusoid at particular frequency. Can we extend the same notion to the CTFT. ie infinitesimally close spikes which implies particular sinusoids at particular frequencies.