railway RRB JE (CBT I + CBT II) Mock Test 2024 Signals and Systems Discrete Fourier Transform (DFT) and Discrete Fourier Series (DFS) Inverse Discrete Fourier Transform
For discrete- -time sinc function, what is the inverse discrete-time Fourier transform of the function as shown in the figure?
1
\(\rm x[n]=\frac{W}{\pi}\sin c\left(\frac{Wn}{2\pi}\right)\)
2
\(\rm x[n]=\frac{W}{2\pi}\sin c\left(\frac{Wn}{\pi}\right)\)
3
\(\rm x[n]=\frac{W}{\pi}\sin c\left(\frac{Wn}{\pi}\right)\)
4
\(\rm x[n]=\frac{2W}{\pi}\sin c\left(\frac{Wn}{2\pi}\right)\)