Design

Design the digital IIR filter with the following specifications

Design the digital IIR filter with the following specifications
  1. How to design digital IIR filter?
  2. Which technique is used to design an IIR filter?

How to design digital IIR filter?

In general, the design of an IIR filter usually involves one or more strategically placed poles and zeros in the z-plane, to approximate a desired frequency response. An analogue filter can always be described by a frequency- domain transfer function of the general form, shown in Equation 5.1.

Which technique is used to design an IIR filter?

Bilinear z-transform (BZT) is a popular method of digital IIR filter design from its analog counterpart [2,3]. It essentially looks into mapping the filter (frequency response) characteristics from analog domain (s-plane) to digital domain (z-plane).

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