Magnitude and Delay Approximation of 1-D and 2-D Digital Filters

There are more than 100 books on Circuit Analysis, Network Synthesis, Ana­ log and Digital Filters and Signal Processing written at the undergraduate and graduate level and a few more written as Reference and Handbooks. When and if they discuss the design of analog and digital filters, they treat mainly the approximation of the magnitude response of the filters and very little of their phase or gr...