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Digital Filters Using MATLAB pp 719–744Cite as

Multirate Filters

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Abstract

Multirate digital filters are commonly used for filters with narrow transition bands or passbands but can be extended to more general cases. Typical applications of multirate filters are found in analog/digital and digital/analog conversion, communication systems, filter banks, transmultiplexers (converters between FDM and TDM systems), and delays with a fraction of the sampling period. Generally, in multirate filter, the filtering is shared between several simple subfilters operating at the lowest possible sampling rate. The design constraints for the subfilters are relaxed compared to a single-rate filter. As a consequence of the reduced design constraints, the effects of quantization and the arithmetic complexity are decreased. Note that the input and output sample frequencies are assumed to be the same. This chapter contains 9 solved examples.

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Authors and Affiliations

  1. Linköping University, Linköping, Sweden

    Lars Wanhammar

  2. Tampere University of Technology, Tampere, Finland

    Tapio Saramäki

Authors
  1. Lars Wanhammar
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  2. Tapio Saramäki
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Correspondence to Lars Wanhammar .

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Wanhammar, L., Saramäki, T. (2020). Multirate Filters. In: Digital Filters Using MATLAB . Springer, Cham. https://doi.org/10.1007/978-3-030-24063-9_15

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  • DOI: https://doi.org/10.1007/978-3-030-24063-9_15

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-24062-2

  • Online ISBN: 978-3-030-24063-9

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