DocumentCode
2024927
Title
Adaptive extended lapped transforms
Author
De Queiroz, Ricardo L. ; Rao, K.R.
Author_Institution
Electr. Eng. Dept., Texas Univ., Arlington, TX, USA
Volume
3
fYear
1993
fDate
27-30 April 1993
Firstpage
217
Abstract
The perfect reconstruction conditions for a time-varying lapped transform are presented. Emphasis is placed on a class of cosine modulated filter banks known as the extended lapped transforms. A mechanism for achieving this error-free variation through the factorization of the transform matrix into sparse factors is presented along with a discussion of transition states. Some possible applications are indicated, including a structure for perfect reconstruction orthogonal time-varying wavelet packets.<>
Keywords
adaptive filters; digital filters; matrix algebra; time-varying systems; wavelet transforms; cosine modulated filter banks; extended lapped transforms; factorization; orthogonal time-varying wavelet packets; perfect reconstruction conditions; time-varying lapped transform; transition states;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on
Conference_Location
Minneapolis, MN, USA
ISSN
1520-6149
Print_ISBN
0-7803-7402-9
Type
conf
DOI
10.1109/ICASSP.1993.319474
Filename
319474
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