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Consider the following statements with respect to Discrete Fourier Transform (DFT): 1. It is obtained by performing a sampling operation in the time domain. 2. It transforms a finite duration sequence into a discrete frequency spectrum. 3. It is obtained by performing a sampling operation in both time and frequency domains. Which of the above statements is/are correct?

Consider the following statements with respect to Discrete Fourier Transform (DFT): 1. It is obtained by performing a sampling operation in the time domain. 2. It transforms a finite duration sequence into a discrete frequency spectrum. 3. It is obtained by performing a sampling operation in both time and frequency domains. Which of the above statements is/are correct? Correct Answer 2 and 3 only

  • Discrete fourier trans form (DFT) is fourier transform of “sampled signal repeated periodically”.
  • X(t) is smapled and then peridically repeated, its corresponding spectrum is also sampled.
  • It is obtained by performing a sampling operation in both time and frequency domains.

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