Method, system, and device for performing packet loss concealment by superposing data
US8600738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2009 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Nov 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, device and system to implement hiding the loss packet are provided. The provided method, device and system recover the lost frame according to the data before and after the lost frame and enhances the correlation of the recovered lost frame data and the data after the lost frame. A method and device for estimating pitch period are also provided which select a pitch period from the initial pitch period and the pitch periods corresponding to the frequencies which are one or more times higher than the frequencies corresponding to the initial pitch period as the final estimated pitch period, may improve frequency multiplication when estimating the pitch period; in addition, by tuning of the pitch period by matching the waves, the error of estimating pitch period may be reduced and the quality of the audio data may be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.