Some further results on modulated/extended lapped transforms
Mukund Padmanabhan, K. Martin · 1992
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.>