Analysis of M-channel time-varying filter banks
Digital Signal Processing
Separating mixed multi-component signal with an application in mechanical watch movement
Digital Signal Processing
Time-varying cosine-modulated filter banks
Digital Signal Processing
| Hi-index | 35.68 |
The perfect reconstruction conditions for a time-varying lapped transform (paraunitary filter bank) are developed through the factorization of the transform matrix into sparse factors. A general formulation is presented allowing one to switch between two paraunitary filter banks. However, the extended lapped transform (ELT) is often used as an example. Furthermore, an adaptive wavelet packet is developed employing a time varying, tree association of ELTs. In all cases perfect reconstruction is inherently assured