DESIGN OF 2-D VARIABLE DIGITAL-FILTERS WITH ARBITRARY MAGNITUDE CHARACTERISTICS

被引:8
作者
DENG, TB
SOMA, T
机构
[1] Department of Information Sciences, Faculty of Science, Toho University, Funabashi, Chiba, 274
[2] Computation Center, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351-01
关键词
VARIABLE DIGITAL FILTER; SPECTRAL PARAMETER; MAGNITUDE SPECIFICATION;
D O I
10.1016/0165-1684(94)00140-U
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Digital filtering techniques are extensively applied in such areas as acoustic signal processing, image processing, biomedical signal processing and geophysical data processing. In many applications, the frequency-domain characteristics of digital filters are required to be changeable during the course of filtering process. The digital filters with variable frequency-domain characteristics are called variable filters. This paper proposes an efficient technique for designing 2-D variable filters with arbitrary magnitude characteristics. The technique is based on the decomposition of the given 2-D variable magnitude specifications. By this technique, we can obtain a 2-D variable digital filter by simply designing a set of 2-D constant filters and performing a set of 1-D polynomial approximations. Consequently, the original difficult 2-D variable filter design problem can be easily solved.
引用
收藏
页码:17 / 27
页数:11
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