Near-perfect-reconstruction low-complexity two-band IIR/FIR QMF banks with FIR phase-compensation filters

Jörg Kliewer, Enisa Brka

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In this paper, we present a novel approach for the design of near-perfect-reconstruction mixed allpass-/FIR-based two-band quadrature-mirror filter banks. The proposed design method is carried out in the polyphase domain, where FIR filters are employed for compensating the non-linear phase introduced by the allpass filters. In contrast to previous approaches in literature the FIR phase-compensation filters can be designed very efficiently using analytical expressions. Furthermore, starting from a generalized two-band structure, we introduce three special cases with different properties which are based on the same design principle. In all systems the remaining amplitude and phase distortions are controllable and can be made arbitrarily small at the expense of additional system delay. Simultaneously, aliasing can be minimized or completely canceled if further delay can be tolerated.

Original languageEnglish (US)
Pages (from-to)171-181
Number of pages11
JournalSignal Processing
Issue number1
StatePublished - Jan 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering


  • Allpass polyphase components
  • FIR phase-compensation filter
  • Low-complexity QMF bank


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