Title :
A measure of aliasing energy in multiresolution signal decomposition
Author :
Akansu, Ali N. ; Caglar, Hakan
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
An analysis of band energy distributions in perfect reconstruction (PR) multirate systems is presented, and the effects of aliasing are evaluated. A performance measure called nonaliasing energy ratio (NER) is defined. The merit of the new measure is emphasized with performance comparisons of the popular block transforms and two-band PR-QMF based hierarchical filter banks. It is shown that the new measure complements the widely used energy compaction measure and is consistent with the subjective performance results
Keywords :
digital filters; filtering and prediction theory; signal processing; aliasing energy; band energy distributions; block transforms; multiresolution signal decomposition; nonaliasing energy ratio; perfect reconstruction multirate systems; performance comparisons; quadrature mirror filter; signal processing; two-band PR-QMF based hierarchical filter banks; Band pass filters; Compaction; Energy measurement; Energy resolution; Filter bank; Frequency; Interpolation; Signal analysis; Signal processing; Signal resolution;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226321
