Design of IIR QMF Banks with Near-Perfect Reconstruction and Low Complexity
Löllmann H, Vary P (2008)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2008
Pages Range: 3521–3524
Event location: Las Vegas
ISBN: 978-1-42441-483-3
Abstract
A novel design for a two-channel IIR quadrature-mirror filter (QMF) bank with near-perfect reconstruction (NPR) is presented. The analysis filter-bank is given by an efficient polyphase network (PPN) implementation based on allpass filters. The arising phase distortions are almost compensated by stable allpass filters, designed via analytical closed-form expressions. In a first design, the remaining aliasing, amplitude and phase distortions become arbitrarily small in dependence of the tolerable system delay and algorithmic complexity, respectively. In a second design, aliasing and amplitude distortions are completely canceled and phase distortions are minimized at the expense of an additional signal delay. The proposed QMF banks have a lower algorithmic complexity than comparable designs.
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How to cite
APA:
Löllmann, H., & Vary, P. (2008). Design of IIR QMF Banks with Near-Perfect Reconstruction and Low Complexity. In Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (pp. 3521–3524). Las Vegas, US.
MLA:
Löllmann, Heinrich, and Peter Vary. "Design of IIR QMF Banks with Near-Perfect Reconstruction and Low Complexity." Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Las Vegas 2008. 3521–3524.
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