A class of time-varying wavelet transforms

The concept of the time-varying discrete-time wavelet transform is introduced. In the time-varying wavelet transform, the basic tiling of the time-frequency plane stays unchanged and only the properties of the analysis wavelets are changed in time. The authors' primary objective in designing su...

Full description

Saved in:
Bibliographic Details
Main Authors: Sodagar, I., Nayebi, K., Barnwell, T.P.
Format: Conference Proceeding
Language:English
Subjects:
Discrete transforms
Discrete wavelet transforms
Filter bank
Fourier transforms
Karhunen-Loeve transforms
Signal processing
Time frequency analysis
Time varying systems
Tree data structures
Wavelet transforms
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The concept of the time-varying discrete-time wavelet transform is introduced. In the time-varying wavelet transform, the basic tiling of the time-frequency plane stays unchanged and only the properties of the analysis wavelets are changed in time. The authors' primary objective in designing such analysis-synthesis structures is to insure that the transform is invertible at all times. Two design procedures are developed based on the time-varying filter bank design. The first approach uses a time-varying two-band filter bank tree structure, and the second approach is based on parallel nonuniform filter banks. The concept can easily be extended to general tree structures and wavelet packets.< >
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.1993.319470