Title :
Perfect reconstruction QMF structures which yield linear phase FIR analysis filters
Author :
Nguyen, T.Q. ; Vaidyanathan, P.P.
Author_Institution :
Dept. of Electr. Eng., Caltech, Pasadena, CA, USA
Abstract :
The authors present a perfect reconstruction FIR (finite-impulse response) linear-phase lattice structure for the two-channel quadrature-mirror-filter (QMF) bank. This structure covers most pairs of perfect reconstruction FIR linear-phase analysis filters which have the same (odd) order. For general number of channels M, conditions are derived which any QMF perfect reconstruction linear phase structure must obey. A design example is presented for the M=2 case.<>
Keywords :
digital filters; finite-impulse response; linear phase FIR analysis filters; perfect reconstruction linear phase structure; two-channel quadrature-mirror-filter; Channel bank filters; Ear; Finite impulse response filter; Lattices; Mirrors; Nonlinear filters; Speech synthesis; Symmetric matrices; Vectors;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.14925
