Title :
Two-channel perfect-reconstruction FIR QMF structures which yield linear-phase analysis and synthesis filters
Author :
Nguyen, Truong Q. ; Vaidyanathan, P.P.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
fDate :
5/1/1989 12:00:00 AM
Abstract :
Two perfect-reconstruction structures for the two-channel quadrature mirror filter (QMF) bank, free of aliasing and distortions of any kind, in which the analysis filters have linear phase, are described. The structure in the first case is related to the linear prediction lattice structure. For the second case, new structures are developed by propagating the perfect-reconstruction and linear-phase properties. Design examples, based on optimization of the parameters in the lattice structures, are presented for both cases.<>
Keywords :
digital filters; ferromagnetic-paramagnetic transitions; QMF; design; linear phase analysis filters; linear prediction lattice structure; optimization; perfect-reconstruction structures; synthesis filters; two-channel quadrature mirror filter; Design methodology; Design optimization; Filter bank; Finite impulse response filter; Lattices; Mirrors; Phase distortion; Signal synthesis; Speech synthesis; Transfer functions;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
