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Discrete Fourier Series question

  1. Dec 20, 2014 #1
    Why is the summation for the discrete fourier series from 0 to N-1 (where N is the fundamental period of the signal) wheras it goes from minus infiniti to infiniti for continuous fourier series...


    Thank you
     
  2. jcsd
  3. Dec 21, 2014 #2

    ehild

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    The summation goes from n=0 to infinity in case of Fourier series in terms of sin(nx) and cos(nx). In terms of einx, it goes from - infinity to infinity.
     
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