Articles with "chebyshev approximation" as a keyword



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Chebyshev approximation problem of multidimensional IIR digital filters in the frequency domain

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Published in 2018 at "Multidimensional Systems and Signal Processing"

DOI: 10.1007/s11045-017-0525-5

Abstract: This paper investigates the problem of simultaneous approximation of a prescribed multidimensional frequency response. The frequency responses of multidimensional IIR digital filters are used as nonlinear approximating functions. Chebyshev approximation theory and the notion of… read more here.

Keywords: chebyshev approximation; approximation; iir digital; multidimensional iir ... See more keywords
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Line width at half maximum of the Voigt profile in terms of Gaussian and Lorentzian widths: Normalization, asymptotic expansion, and chebyshev approximation

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Published in 2020 at "Optik"

DOI: 10.1016/j.ijleo.2019.163919

Abstract: Abstract Normalization by the Voigt width was applied to both the Lorentz and Gaussian widths in the half width at half maximum (HWHM) equation. The normalization simplified the HWHM equation into a univariate relation for… read more here.

Keywords: half maximum; chebyshev approximation; width half; normalization ... See more keywords