Design of Nonrecursive Digital Filters Using the Exponential Window
نویسندگان
چکیده
In this paper, nonrecursive digital filter design using the exponential window is investigated [1,2]. The exponential window proposed by the author [3] has computational cost advantage compared to the well-known Kaiser window due to having no power series expansion in its time domain representation. First, the filter design equations for the exponential window to meet the given low pass filter specification are established. And then, the comparison with the other 2-parameter windows, namely Cosh and Kaiser, is discussed. The simulation results show that the filters designed by the exponential window provide significantly better far end stopband attenuation, which is important for some applications, than the filters designed by the Cosh and Kaiser windows, while performing worse stopband attenuations near the stopband frequency.
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Design of Nonrecursive Digital Filters Using the Ultraspherical Window Function
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