Frame loss correction by weighted noise injection
US9761230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2014 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for processing a digital signal, implemented during decoding of the signal, in order to replace a succession of samples lost during decoding, the method comprising steps of: generating a structure of a signal for replacing the lost succession, this structure comprising spectral components determined from valid samples received during decoding before the succession of lost samples; generating a residue between a digital signal available to the decoder, comprising received valid samples, and a signal generated from the spectral components; and extracting blocks from the residue, method in which window weighted blocks are injected into the structure using an overlap-add approach, the injected blocks partially overlapping in time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.