Title :
Non-uniform multirate filter banks: theory and design
Author :
Hoang, Phuong-Quan ; Vaidyanathan, P.P.
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
Abstract :
The nonuniform, maximally decimated quadrature mirror filter (QMF) bank is introduced. It permits the use of nonuniform filter responses, which is more suitable for some applications. A necessary condition for alias cancellation is derived for the case where all the decimation factors are integer-valued. A special case of the two-channel nonuniform AMF system with nonintegral decimation factors is analyzed, and a technique for canceling aliasing and minimizing other distortions is presented and illustrated by a design example
Keywords :
filtering and prediction theory; filters; frequency response; alias cancellation; aliasing; decimation factors; maximally decimated quadrature mirror filter; multirate filter banks; nonuniform filter responses; two-channel nonuniform AMF system; Bandwidth; Channel bank filters; Costs; Filter bank; Image coding; Mirrors; Phase distortion; Privacy; Sampling methods; Speech coding;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100368
