Abstract
Two methods for the design of two-dimensional (2-D) rotated digital filters proposed by Costa and Venetsanopoulos and Goodman are modified by performing rotation through a somewhat more general transformation. This modification eliminates nonessential singularities of the second kind, which can lead to an unstable 2-D digital filter when finiteprecision arithmetic is used for the implementation. The paper also describes detailed procedures for the design of 2-D rotated digital filters satisfying prescribed specifications. The procedures can be used for the design of low-pass, high-pass, bandpass, and bandstop filters of the Butterworth, Chebyshev, or elliptic type, and also for the design of wave digital filters. The specifications that can be prescribed are the maximum passband ripple, the minimum stopband attenuation, the passband and stopband edges, and the degree of circularity. Further, zero phase can readily be achieved.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.