IIR Cascaded-Resonator-Based Complex Filter Banks

The use of a filter bank IIR filters for the spectral decomposition and analysis signals has been popular many years. As such, new filter-bank resonator-based structure, representing an extremely hardware-efficient received good deal attention. Recently, multiple-resonator (MR)-based general cascaded-resonator (CR)-based have proposed. In comparison to single-resonator-based analyzers, analyzers with higher multiplicity resonators in cascade provide lower side lobes attenuation stopbands. previous works, it was shown that CR-based infinite impulse response (IIR) filters, which is numerically more efficient than one finite (FIR) suitable dynamic harmonic analysis. This paper uses same approach design complex digital banks. case, optimization task referred frequency responses filters. this work, mother are reshaped so sum (or difference, depending on parity number cascade) two adjacent optimized. way, online adaptive base can be obtained. bandwidth designed simply changed by adding or omitting output corresponding harmonics filter.