Design and Performance Evaluation of a Quadrature Mirror Filter (QMF) Bank
Suverna Sengar, Partha Pratim Bhattacharya · 2012
In this paper, a two channel Quadrature Mirror Filter (QMF) bank is designed and the performance is evaluated. A new method is developed to optimize the prototype filter response. The design problem is formulated as nonlinear unconstrained optimization of an objective function, which is weighted sum of square of error in passband, stop band and overall filter bank response. The proposed method gives better performance in terms of peak reconstruction error and computational time.