DocumentCode
86640
Title
An Analytic Wavelet Transform With a Flexible Time-Frequency Covering
Author
Bayram, Ilker
Author_Institution
Electron. & Commun. Eng., Istanbul Tech. Univ., Istanbul, Turkey
Volume
61
Issue
5
fYear
2013
fDate
1-Mar-13
Firstpage
1131
Lastpage
1142
Abstract
We develop a rational-dilation wavelet transform for which the dilation factor, the Q-factor and the redundancy can be easily specified. The introduced transform contains Hilbert transform pairs of atoms, therefore it is also suitable for oscillatory signal processing. The transform may be modified to obtain a tight chirplet frame for discrete-time signals. A fast implementation, that makes use of an equivalent filter bank, makes the transform suitable for long signals. Examples on natural signals are provided to demonstrate the utility of the transform.
Keywords
Hilbert transforms; Q-factor; channel bank filters; discrete time filters; signal processing; time-frequency analysis; wavelet transforms; Hilbert transform; Q-factor; analytic rational-dilation wavelet transform; dilation factor; discrete-time signal; equivalent filter bank; flexible time-frequency covering; oscillatory signal processing; redundancy; tight chirplet frame; Atomic clocks; Q factor; Redundancy; Time frequency analysis; Wavelet analysis; Wavelet transforms; Analytic wavelet frame; chirplet; pitch-shifting; rational dilation; rational sampling factor;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/TSP.2012.2232655
Filename
6375849
Link To Document