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It is a convolution. Grant Sanderson (3blue 1brown) explains the relationship between a filter and the fourier transform towards of the end of this hot-off-the
by dnautics 6y ago
It is a convolution. Grant Sanderson (3blue 1brown) explains the relationship between a filter and the fourier transform towards of the end of this hot-off-the-presses video: https://mitmath.github.io/18S191/Fall20/lecture2/ https://mitmath.github.io/18S191/Fall20/lecture2/