Title :
Effects of finite word length in two-channel QMF banks
Author :
Abdel-Raheem, E. ; Tawfik, A. ; El-Guibaly, F.
Author_Institution :
Dept. of Electron. & Commun. Eng., Ain Shams Univ., Cairo, Egypt
Abstract :
Finite word-length effects in multirate two-channel quadrature mirror filter (QMF) banks are presented. Aliasing cancellation, amplitude and/or phase distortions, and the perfect-reconstruction property due to finite-precision effects are investigated. A finite-precision model is applied to several types of QMF banks and the results are reported
Keywords :
FIR filters; band-pass filters; digital arithmetic; electric distortion; filtering theory; noise; quadrature mirror filters; roundoff errors; signal reconstruction; aliasing cancellation; amplitude distortion; analysis/synthesis banks; finite word length effects; finite-precision model; multirate quadrature mirror filter; perfect-reconstruction property; phase distortion; roundoff noise; two-channel FIR QMF banks; Channel bank filters; Filter bank; Finite impulse response filter; Image reconstruction; Mirrors; Phase distortion; Quantization; Signal analysis; Signal synthesis; Transfer functions;
Conference_Titel :
Advances in Digital Filtering and Signal Processing, 1998 IEEE Symposium on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-4957-1
DOI :
10.1109/ADFSP.1998.685713
