An 1024point DFT is used to analyze a signal xn after applyi

An 1024-point DFT is used to analyze a signal x[n] after applying a window w[n] of length N lessthanorequalto 1024. Which of the following windows is most likely able to resolve two equal amplitude sinusoids with nearly equal frequencies? 25G-point rectangular window 512-point rectangular window 1024-point rectangular window 25G-point Hann window 512-point Hann window 1024-point, Hann window

Solution

The same point window will give good results so the answer is 1024-point rectangle window (option C)

Hann window is more complex method compared to window method