Journal ArticleDOI
Design of two-channel linear-phase QMF banks based on real IIR all-pass filters
Ju-Hong Lee,Y.-H. Yang +1 more
- Vol. 150, Iss: 5, pp 331-338
TLDR
In this article, the design of two-channel linear-phase quadrature mirror filter (QMF) banks constructed by real infinite impulse response (IIR) digital all-pass filters is considered.Abstract:
The design of two-channel linear-phase quadrature mirror filter (QMF) banks constructed by real infinite impulse response (IIR) digital all-pass filters is considered. The design problem is appropriately formulated to result in a simple optimisation problem. Using a variant of Karmarkar's algorithm, the optimisation problem can be efficiently solved through a frequency sampling and iterative approximation method to find the real coefficients for the IIR digital all-pass filters. The resulting two-channel QMF banks possess an approximately linear phase response without magnitude distortion. The effectiveness of the proposed technique is achieved by forming an appropriate Chebyshev approximation of the desired phase response and then finding its solution from a linear subspace in a few iterations. Finally, several simulation examples are presented for illustration and comparison.read more
Citations
More filters
Journal ArticleDOI
Design Of 2-D Recursive Digital Filters Using Nonsymmetric Half-Plane Allpass Filters
Yuan-Hau Yang,Ju-Hong Lee +1 more
TL;DR: A novel structure using recursive nonsymmetric half-plane (NSHP) digital allpass filters (DAFs) is presented for designing 2-D recursive digital filters and possesses the advantage of better performance in designing a variety of 2- D recursivedigital filters over existing 2-d filter structures.
Journal ArticleDOI
Design of Two-Channel Quadrature Mirror Filter Banks Using Minor Component Analysis Algorithm
TL;DR: In this paper, the minor component analysis algorithm based on the neural learning rule is exploited to the design of eigenfilter and results confirm that the proposed neural-based method can achieve accurate performance by incorporating the simple neural model.
Journal ArticleDOI
Two-Channel Parallelogram QMF Banks Using 2-D NSHP Digital All-Pass Filters
Ju-Hong Lee,Yuan-Hau Yang +1 more
TL;DR: The design problem of the proposed PQMF bank is appropriately formulated to result in a minimization of the linear-phase error associated with the 2-D NSHP DAFs in the pth-norm (Lp) sense.
Journal ArticleDOI
Improved Computing-Efficiency Least-Squares Algorithm with Application to All-Pass Filter Design
TL;DR: In this paper, the authors proposed closed-form expressions to compute the elements of the Toeplitz-plus-Hankel matrix required in the least-squares design of IIR all-pass filters.
Journal ArticleDOI
Neural Network-Based IIR All-Pass Filter Design
TL;DR: A neural network-based Lyapunov energy function for the weighted least-squares design of IIR all-pass filters and a weight updating function is proposed to achieve accurate approximation of the equiripple response.
References
More filters
Journal ArticleDOI
A simplex method for function minimization
John A. Nelder,R. Mead +1 more
TL;DR: A method is described for the minimization of a function of n variables, which depends on the comparison of function values at the (n 41) vertices of a general simplex, followed by the replacement of the vertex with the highest value by another point.
Journal ArticleDOI
Combinatorial optimization: algorithms and complexity
TL;DR: This clearly written, mathematically rigorous text includes a novel algorithmic exposition of the simplex method and also discusses the Soviet ellipsoid algorithm for linear programming; efficient algorithms for network flow, matching, spanning trees, and matroids; the theory of NP-complete problems; approximation algorithms, local search heuristics for NPcomplete problems, more.
Book
Multirate Systems and Filter Banks
TL;DR: In this paper, a review of Discrete-Time Multi-Input Multi-Output (DIMO) and Linear Phase Perfect Reconstruction (QLP) QMF banks is presented.
Book ChapterDOI
Multirate Systems and Filter Banks
Tapio Saramaki,Robert Bregovic +1 more
TL;DR: In this article, the basic operations of these filter banks are considered and the requirements are stated for alias-free, perfect-reconstruction (PR), and nearly perfect reconstruction (NPR) filter banks.
Journal ArticleDOI
Subband coding of images
John W. Woods,S. O'Neil +1 more
TL;DR: A simple yet efficient extension of this concept to the source coding of images by specifying the constraints for a set of two-dimensional quadrature mirror filters for a particular frequency-domain partition and showing that these constraints are satisfied by a separable combination of one-dimensional QMF's.
Related Papers (5)
Technique for design of two-channel approximately linear phase QMF filter bank and its application to image compression
S.S. Lawson,A. Klouche-Djedid +1 more