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Which of the following is the disadvantage of Hanning window over rectangular window?

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Which of the following is the disadvantage of Hanning window over rectangular window?

(a) More side lobes

(b) Less side lobes

(c) More width of main lobe

(d) None of the mentioned

I got this question in a job interview.

This is a very interesting question from Frequency Analysis of Signals Using DFT topic in chapter Discrete Fourier Transform – Properties and Applications of Digital Signal Processing

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Correct answer is (c) More width of main lobe

The explanation: In the magnitude response of the signal windowed using Hanning window, the width of the main lobe is more which is the disadvantage of this technique over rectangular windowing technique.

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