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The window function is used to __________

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The window function is used to __________

(a) multiply it with the incoming signal

(b) add it with the incoming signal

(c) subtract it from the incoming signal

(d) divide the incoming signal

I had been asked this question in an interview.

My query is from Fourier Analysis and Filtering in portion Beyond the Basics of MATLAB

1 Answer

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Correct choice is (a) multiply it with the incoming signal

The best explanation: The rectangular window function is multiplied with the incoming signal so that the unrequired components can be filtered out from the signal. This is the basic principle of filtering.

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