An evaluation of time-frequency localization in transforms and filter banks
Y. Liu, Ali N. Akansu · IEEE International Conference on Acoustics Speech and Signal Processing · 1993
The authors derive the discrete-time uncertainty and evaluate the time-frequency localizations of orthogonal bases. They measure and compare the localization features of known block transforms, filter banks, and wavelet filters. It is emphasized that the time and frequency behaviors of basis functions should be considered simultaneously in the design of block transforms and filter banks for further improvements in their applications.>