"Rectangular window" and "Triangular window" have gibbs phenomenon

So which window should be used in fir filter design to have minimum or zero gibbs phenomenon

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    $\begingroup$ Hi Man, this 100% reads like a homework assignment to which you've not done any research. I'm sure the wikipedia article Window Funkctio allows you to find out that there's no general answer, and it depends on which tradeoffs you're willing to take. Please do a bit of lecture and come back to ask a narrowed down, specific question that isn't asking us to re-introduce windows (a concept that most definitely has been explained several times here, and also most definitely is part of your study material). $\endgroup$ – Marcus Müller Jul 24 '20 at 16:22

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