Plot a graph of the DTFT of a discrete sequence.
DTFT is a continuous signal, unlike the discrete Fourier transform (DFT). You probably know the DFT by another name--FFT. DFT and DTFT are different.
Plot a graph of the DTFT of a discrete sequence. Don't confuse DTFT with DFT (the latter can be done with FFT which comes with NumPy).
Python