Two-channel perfect-reconstruction FIR QMF structures which yield linear-phase analysis and synthesis filters

Structures for M-Channel Perfect-Reconstruction FIR QMF Banks Which Yield Linear-Phase Analysis Filters

In this paper, we develop structures for FIR perfect-reconstruction QMF banks which cover a subclass of systems that yield linear-phase analysis filters for arbitrary M. The parameters of these structures can be optimized in order to design analysis filters with minimum stopband energy which a t the same time have linear-phase and satisfy the perfect-reconstruction property. If there are M subb...

Structures for M-channel perfect-reconstruction FIR QMF banks which yield linear-phase analysis filters

IJSRD - International Journal for Scientific Research & Development| Vol. 2, Issue 05, 2014 | ISSN (online): 2321-0613

QMF finds wide range of application such as design of wavelet bases, speech and image compression, trans-multiplexers, antenna systems, digital audio industry, and biomedical signal processing due to advancement in QMF banks. This paper presents the design of perfect reconstruction quadrature mirror filter using window technique. A common approach to construct such filterbanks is to employ a tw...

On the Design of Near-Perfect-Reconstruction IIR QMF Banks Using FIR Phase-Compensation Filters

In this paper we describe a novel approach for the design of near-perfect-reconstruction mixed FIR/ allpass-based quadrature mirror filter banks. The design is carried out in the polyphase domain, where FIR filters, obtained via simple closed-form expressions, are employed for compensating the non-linear phase introduced by the allpass filters. Starting from a generalized two-band structure, we...

A Design of Near Perfect Reconstruction Linear-Phase QMF Banks Based on Hybrid Steepest Descent Method

In this paper, we propose a projection based design of near perfect reconstruction QMF banks. An advantage of this method is that additional design specifications are easily implemented by defining new convex sets. To apply convex projection technique, the main difficulty is how to approximate the design specifications by some closed convex sets. In this paper, introducing a notion of Magnitude...