On adaptive wavelet packets

An algorithm is presented for fast implementation of time-varying wavelet packets maintaining perfect reconstruction throughout transitions. It is based on filter banks known as the extended lapped transforms in an association following the paths of a binary-tree. Methods for pruning or expanding the branches of the tree are presented and a discussion on adaptation issues is carried.

• Type: Conference
• Year: 1993
• Where: ISCAS
• Authors: Ricardo L. de Queiroz, K. Raghunath Rao
• Keywords: Extended Lapped Transforms, Hardware, ISCAS 1993, Perfect Reconstruction, Time-varying Wavelet Packets