Wednesday, 12 September 2007

Digital Filter Design

The digital filters are basically designed from analog filters.

The procedure :

  1. Take the Frequency and magnitude specifications of equivalent filter.
  2. Design analog filter for given specification( H(s) )
  3. Apply the suitable transformation ( H(s) < - > H(z) )
  4. Realize the digital filter from the system function H(z).
Ref : DSP , J.S. Chitode

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