Design of 2-D IIR filters using a new digital spectral transformation
Design of 2-D IIR filters using a new digital spectral transformation
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使用新的数字光谱变换设计二维 IIR 滤波器
DOI:
10.1109/iscas.1995.521521
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
B. Shenoi
中科院分区:
文献类型:
--
作者:
R. Hegde;B. Shenoi
A Digital Spectral Transformation (DST) has been proposed for the design of 2-D IIR digital filters with a circular and an elliptical region for the passband region of the lowpass filter. This method guaranteed stability of the 2-D filter and did not resort to tedious optimization techniques. The same DST can be used to approximate the constant group delay response. In this paper, a new DST is proposed to design these filters using the same design procedure but it yields a significantly smaller value for the error in the approximation to the circular and elliptical contours in the /spl omega//sub 1/-/spl omega//sub 2/ plane. Some illustrative examples are included.