How do I filter out the central peak of a sinc-function using FFT?

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Niels Visser
Niels Visser 2017년 11월 7일
댓글: David Goodmanson 2017년 11월 8일
Hello,
Given f(x)=sinc(x), Fourier transforming this into the frequency domain (u) leads to a step function:
I think if have to filter out the low frequency domain and then Fourier transform it back to the spatial domain(?) to filter out the central peak of the sinc function. If so, how do I do that? I'm completely new in Matlab.

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