Title :
Progressive optimization of time-frequency localization in subband trees
Author :
Tazebay, Mehmet V. ; Akansu, Ali N.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
The time and frequency localizations of the product subband filter functions in tree structures are addressed and evaluated in this paper. The concept of progressive optimality is proposed as a new design approach. It is shown that the performance improvements are possible by using different PR-QMF banks at different nodes of a subband tree
Keywords :
band-pass filters; filtering theory; optimisation; quadrature mirror filters; time-frequency analysis; wavelet transforms; PR-QMF banks; design; product subband filter functions; progressive optimization; subband trees; time-frequency localization; wavelet transform; Bandwidth; Discrete wavelet transforms; Displays; Filter bank; Fourier transforms; Prototypes; Signal resolution; Time frequency analysis; Tree data structures; Wavelet analysis;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467347
