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<p>Integer and non-integer-order exponential filters defined in both the time and frequency-domains are investigated in this work. These filters are then approximated utilizing a curve-fitting method leading to a rational integer-order approximating transfer function. The accuracy of the approximation of the exponential filters is confirmed through experimental results obtained using a Field Programmable Analog Array device. A real life application example is also provided, where one of the presented filters is employed for denoising an electrocardiogram signal.</p>

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Non-integer-order exponential filters: definitions in the time-domain and frequency-domain

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月29日

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  • Julia Nako,
  • Costas Psychalinos,
  • Ahmed S. Elwakil

摘要

Integer and non-integer-order exponential filters defined in both the time and frequency-domains are investigated in this work. These filters are then approximated utilizing a curve-fitting method leading to a rational integer-order approximating transfer function. The accuracy of the approximation of the exponential filters is confirmed through experimental results obtained using a Field Programmable Analog Array device. A real life application example is also provided, where one of the presented filters is employed for denoising an electrocardiogram signal.