DocumentCode
1003250
Title
Fast wavelet transforms based on the extended lapped transform
Author
Malvar, H.S.
Author_Institution
Dept. de Engenharia Electrica, Brasilia Univ., Brazil
Volume
28
Issue
15
fYear
1992
fDate
7/16/1992 12:00:00 AM
Firstpage
1393
Lastpage
1395
Abstract
A new family of wavelet transforms (WTs) based on the extended lapped transform (ELT) is introduced. A new optimisation criterion for the ELT butterfly angles is presented, leading to ELT-based WTs with virtually the same performance but a much lower computational complexity than the standard maximally-regular WTs.
Keywords
computational complexity; filtering and prediction theory; low-pass filters; optimisation; signal processing; speech analysis and processing; transforms; butterfly angles; computational complexity; extended lapped transform; frequency response; lowpass filter; optimisation criterion; signal decomposition; speech coding; two band filter banks; wavelet transforms;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19920886
Filename
256033
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