Title :
Some further results on modulated/extended lapped transforms
Author :
Padmanabhan, Mukund ; Martin, Ken
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Some further results on modulated and extended lapped transforms are reported. Sufficient conditions to ensure perfect reconstruction for extended lapped transforms are derived. These conditions are valid for transforms of length lM and place no restriction on l; in this respect they apply to a more general case than earlier derivations that constrained l to be even. Also, a new filter structure is reported for implementing the modulated lapped transform. It has a hardware complexity of O(M) as compared to O(M log M) for other implementations
Keywords :
computational complexity; digital filters; filtering and prediction theory; linear algebra; transforms; extended lapped transforms; filter banks; filter structure; hardware complexity; linear algebraic interpretation; modulated lapped transform; perfect reconstruction; Artificial intelligence; Filtering; Hardware; Matrices; Modulation coding; Nonlinear filters; Prototypes; Sufficient conditions; Transform coding;
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.1992.226435
