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Signal scaling in cascade digital filters

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Abstract

Scaling of filter variables is central to fixed-point implementation of digital filters. A simple method of scaling based on scaling constants of individual sections of a cascade digital filter is presented. The proposed method saves much computational labor in the implementation of higher-order digital filters. Maximal amplitude expressions of second-order filter transfer functions are also presented.

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References

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Authors and Affiliations

  1. Department of Electrical Engineering, University of Baghdad, Jadiriya, Baghdad, Iraq

    K. P. Prasad

  2. Department of Electrical and Computer Engineering, Concordia University, 1455 De Maisonneuve West, H3G 1M8, Montreal, Quebec, Canada

    P. Sathyanarayana

Authors
  1. K. P. Prasad
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  2. P. Sathyanarayana
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Additional information

This work was supported by the Department of Science and Technology, Government of India, under Grant No. D.O.No.III-5(17)/85-ET.

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Prasad, K.P., Sathyanarayana, P. Signal scaling in cascade digital filters. Circuits Systems and Signal Process 8, 421–426 (1989). https://doi.org/10.1007/BF01599763

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  • DOI: https://doi.org/10.1007/BF01599763

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