Title :
Diminishing the asymmetry of Daubechies´ wavelets
Author_Institution :
Compunetix Inc., Monroeville, PA, USA
Abstract :
The author shows that the asymmetry of Daubechies´ scaling functions and wavelets can be diminished using, as a measure of asymmetry for the wavelet generating discrete-time filter, a special second moment of energy distribution in time. The moment is involved in the uncertainty relation for discrete-time signals. The generating filter is chosen such that the moment is minimized. Some other measures of asymmetry are addressed too.
Keywords :
"Discrete wavelet transforms","Polynomials","Energy measurement","Time measurement","Transfer functions","Digital filters","Power filters","Equations","Signal processing"
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467376
