Title :
Fast computation of wavelet transforms with the extended lapped transform
Author :
Malvar, Henrique S.
Author_Institution :
Dept. de Engenharia Eletrica, Brasilia Univ, Brazil
Abstract :
The use of the extended lapped transform (ELT) to implement orthogonal wavelet transforms (WTs) is suggested, and a fast algorithm is presented for the ELT-based WT. Its performance is quite close to that of maximally-regular WTs, in terms of regularity, filtering characteristics, and coding gains. The advantage of ELT-based WTs is that they lead to about half the computational complexity of maximally-regular WTs
Keywords :
computational complexity; digital filters; filtering and prediction theory; wavelet transforms; ELT-based WT; computational complexity; extended lapped transform; fast algorithm; fast computation; two-channel filter bank; wavelet transforms; Channel bank filters; Computational complexity; Energy resolution; Filter bank; Frequency; Lattices; Performance gain; Signal resolution; Speech; Wavelet transforms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226353
