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 signalI had been asked this question in an interview.My query is from Fourier Analysis and Filtering in portion Beyond the Basics of MATLAB

The window function is used to __________(a) multiply it with the inco

1.	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 signalI had been asked this question in an interview.My query is from Fourier Analysis and Filtering in portion Beyond the Basics of MATLAB
Answer» 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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