Fourier Analysis

• any periodic signal can be represented as a sum of sinusoids called a ìFourier Seriesî

  x(t) = Â an cos(2önft) + Â bn sin(2önft)
  
  for n = 0,1,Ö, €
  

• eg, for a square wave:

  x(t) = 4V/ p (cos(2öft) - 1/3 cos (3*2öft) + 1/5 cos(5*2öft) - 1/7 cos(7*2öft) + . . .
  

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