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Questions and Answers
What is the frequency resolution in the Discrete Fourier Transform (DFT)?
What is the frequency resolution in the Discrete Fourier Transform (DFT)?
- $\frac{N}{2}$
- $N^2$
- $\frac{2}{N}$ (correct)
- $\frac{1}{2}$
How many discrete values does the DFT yield for the Fourier transform?
How many discrete values does the DFT yield for the Fourier transform?
- $2$
- $N$
- $2N$
- $\frac{N}{2}$ (correct)
What is the time complexity of directly computing the DFT algorithm?
What is the time complexity of directly computing the DFT algorithm?
- $O(N)$
- $O(2^N)$
- $O(1)$
- $O(N^2)$ (correct)
Which algorithm, widely available in mathematical packages like Matlab and Labview, was developed as a fast method for computing the DFT?
Which algorithm, widely available in mathematical packages like Matlab and Labview, was developed as a fast method for computing the DFT?
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In what form is the function y(t) likely to be measured and recorded in real applications of measurement?
In what form is the function y(t) likely to be measured and recorded in real applications of measurement?
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What does the Discrete Fourier Transform (DFT) assume about the data set?
What does the Discrete Fourier Transform (DFT) assume about the data set?
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