Title :
Modulated QMF filter banks with perfect reconstruction
Author_Institution :
Dept. de Engenharia Electr., Brasilia Univ., Brazil
fDate :
6/21/1990 12:00:00 AM
Abstract :
Necessary and sufficient conditions for perfect reconstruction (PR) in a modulated filter bank are derived. It is shown that, for a bank of M filters of length L, PR can be obtained when L=2 KM, for any positive integer K, whereas previous results guaranteed PR only for K=1.
Keywords :
filtering and prediction theory; picture processing; signal processing; speech analysis and processing; QMF filter; image processing; modulated filter bank; perfect reconstruction; quadrature mirror filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900592
