December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and Systems
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12.8 STRUCTURE FOR IIR FILTER
Let us derive the different structures of IIR filters like FIR filters.
12.8.1 Direct Form Structure for IIR Filter
The IIR filter can be described by the generalized difference equation. The system function of Eq. (12.27) and it is rewritten below
From Eq. (12.66) we can conclude that the overall IIR system can be realized as a cascade of two functions H1(z) and H2(z). H1(z) represents the zeros of H(z) and it is all the zero system. H2(z) represents the poles of H(z) and it is all the pole system.
12.8.1.1 Direct form–I structure for IIR filter
We will at first prepare the direct form structures of H1(z) and ...
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