Chapter 13
Infinite Impulse Response FiltersSystems with Memory: Spectral Processors (Part 2)
13.1 Introduction: Filters with Feedback
This chapter introduces the use of feedback in systems to create spectral processors. In Chapter 12, spectral processors were created using feedforward designs, exclusively. This chapter begins by examining systems that only use feedback delay. Then, feedforward and feedback designs are combined to present generalized systems with memory.
13.1.1 Spectral Analysis of Filters with Feedback
As discussed in Chapter 11, the use of feedback delay creates a system with an impulse response of infinite length. This is called an infinite impulse response (IIR) system. In MATLAB, an IIR system is represented by one array ...
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