Title :
An efficient weighted L/sub p/ algorithm for the design of quadrature mirror filters
Author :
Goh, C.K. ; Lim, Y.C.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
3/1/1997 12:00:00 AM
Abstract :
We present an efficient weighted L/sub p/ algorithm for the design of quadrature mirror filters. The filterbank design process is formulated as an iterative weighted least-squares optimization problem. Our algorithm minimizes the pth power of the error function, where p may vary in different frequency bands. Good designs are obtained, typically, in a few iterations.
Keywords :
band-pass filters; frequency response; iterative methods; least squares approximations; optimisation; quadrature mirror filters; QMF filter design; efficient weighted L/sub p/ algorithm; error function; filterbank design; iterative weighted least-squares optimization; quadrature mirror filters; Algorithm design and analysis; Design optimization; Filter bank; Finite impulse response filter; Frequency response; Image reconstruction; Iterative algorithms; Minimax techniques; Mirrors; Process design;
Journal_Title :
Signal Processing Letters, IEEE
