Title: Design of IIR Digital Filter with Fourth-order Cascade Form
Abstract: A bandpass elliptic IIR digital filter of two stages with fourth-order cascade form was designed by virtual instrument software LabVIEW.The main technical target of the filter such as-3 dB passband width,Q value and stopband attenuation were tested and compared with Bessel,Butterworth and Chebyshev filter designed in the same condition.On the basis of these designs,the main frequency with standard harmonic voice signals was tested by using these filters,and the results of harmonic components filtering were compared.It was shown that the elliptical filter had better bandpass performance than Bessel,Butterworth and Chebyshev filter.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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