Abstract
The different mathematical expressions for the transfer functions of FIR and IIR filters also result in very different design methods for both filter types. While a given frequency response is approximated in case of an IIR filter by a rational fractional transfer function of z with poles and zeros (5.30), the FIR filter is simply characterised by zeros and a polynomial of z (5.2).
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© 2010 Springer-Verlag Berlin Heidelberg
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Schlichthärle, D. (2010). Design of IIR Filters. In: Digital Filters. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14325-0_6
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DOI: https://doi.org/10.1007/978-3-642-14325-0_6
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Publisher Name: Springer, Berlin, Heidelberg
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Online ISBN: 978-3-642-14325-0
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