M-channel tree-structured IIR/FIR filter banks with low-complexity analysis filters
Elizabeth Elias, Per Löwenborg, Håkan Johansson, Lars Wanhammar · 2000
A class of M-channel tree-structured digital filter banks with very low complexity analysis filters is presented. The analysis filters are half-band IIR filters and the synthesis filters are FIR filters. The filter banks approximate perfect reconstruction with an exact linear phase response and are constructed by connecting two-channel filter banks in a tree-like structure. The filter banks are designed using well-known and reliable optimization techniques. 1.