Question

The condition with less number of samples L should be avoided.

(a) True

(b) False

I had been asked this question in class test.

I'm obligated to ask this question of Frequency Analysis of Signals Using DFT in chapter Discrete Fourier Transform – Properties and Applications of Digital Signal Processing

Answer 1

Right choice is (a) True

The best explanation: When the number of samples L is small, the window spectrum masks the signal spectrum and, consequently, the DFT of the data reflects the spectral characteristics of the window function. So, this situation should be avoided.