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...

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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
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Nayebi, K.
Barnwell, T.P.
description 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.< >
doi_str_mv 10.1109/ICASSP.1993.319470
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identifier ISSN: 1520-6149
ispartof 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1993, Vol.3, p.201-204 vol.3
issn 1520-6149
2379-190X
language eng
recordid cdi_ieee_primary_319470
source IEEE Xplore All Conference Series
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
title A class of time-varying wavelet transforms
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