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Help me understand Discrete time fourier transform?

  1. Apr 7, 2013 #1
    I'm trying to learn about DSP from here (http://www.sp4comm.org/docs/sp4comm.pdf) Currently stuck on discrete time fourier transform, around page 88. Can anyone try to explain what it is? I understand (continuous) fourier series, and the discrete fourier transform and discrete fourier series of the previous sections in that pdf, but not the DTFT.

    Why is the result a continuous function? What does it mean intuitively and what makes it different from the DFT and the DFS?

    X(e) = Ʃ(-inf:inf) x[n]e-jωn

    Produces a continuous function of ω from a discrete sequence of numbers x[n]

    Explain.. :D
  2. jcsd
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