December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and Systems
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12.9 REALIZATION PROCEDURE FOR DIGITAL FILTER
Although digital filters can be decided in different ways but the relationship between the input and output decides the realization of digital filters. There are three broad categories for realization procedures:
- recursive realization
- non-recursive realization
- FFT realization
12.9.1 Recursive Realization
If the present output of the digital filter is dependent on both the past outputs as well as present and past inputs, this realization procedure of digital filter is known as recursive realization and it needs the feedback of output. Figure 12.33 shows the recursive realization of digital filters. The system function H(z) is given by
Fig. 12.33 Block diagram of a recursively realized digital ...
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