New results and open problems on nonuniform filter-banks
ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 03
Theory and design of a class of cosine-modulated non-uniform filter banks
ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 01
A design method for cosine-modulated filter banks using weighted constrained-least-squares filters
Digital Signal Processing
Peak constrained least-squares QMF banks
Signal Processing
A fast windowing-based technique exploiting spline functions for designing modulated filter banks
IEEE Transactions on Circuits and Systems Part I: Regular Papers
A hybrid method for designing linear-phase quadrature mirror filter bank
Digital Signal Processing
Perfect reconstruction filter banks with rational sampling factors
IEEE Transactions on Signal Processing
Nonuniform filter banks: a reconstruction and design theory
IEEE Transactions on Signal Processing
A simple design method for near-perfect-reconstruction nonuniformfilter banks
IEEE Transactions on Signal Processing
Design of linear-phase recombination nonuniform filter banks
IEEE Transactions on Signal Processing
A simple method for designing high-quality prototype filters forM-band pseudo QMF banks
IEEE Transactions on Signal Processing
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In this paper, a computationally efficient iterative algorithm is presented for the design of multi-channel nearly perfect reconstruction nonuniform filter bank using the modified window functions such as Kaiser, Cosh and Exponential windows with exploiting a new perfect reconstruction condition of nonuniform filter banks instead of using complex objective functions. The cutoff frequency is optimized using linear optimization technique such that the magnitude response of a prototype filter at quadrature frequency is approximately equal to 0.707. The simulation results illustrate significant reduction in amplitude distortion, number of iteration and computation time as compared to earlier existing techniques. The proposed algorithm is simple, easy to implement, and linear in nature. When exploited for subband coding of electrocardiogram (ECG) signals, the proposed method yields good fidelity performance measuring parameters.