Synthesis of sharp diamond-shaped filters using the frequency response masking approach

Abstract

The frequency response masking technique is an efficient method to realize sharp 1-D Filters. This technique can synthesize sharp 1-D filters with a considerably lower complexity when compared to direct-form implementations. In this paper, we extend the frequency response masking technique to the design of 2-D diamond-shaped filters. The design procedure as well as the prototype and masking filters specifications are presented in this paper. A design example is also provided to illustrate the effectiveness of the approach.