Speech decoder and code error compensation method
US7499853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Dec 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
When an error is detected in coded data in the current frame, data separation section 201 separates the data into coding parameters first. Then, mode information decoding section 202 outputs decoding mode information in the previous frame and uses this as the mode information of the current frame. Furthermore, using the lag parameter code and gain parameter code of the current frame obtained at data separation section 201 and the mode information, lag parameter decoding section 204 and gain parameter decoding section 205 adaptively calculate a lag parameter and gain parameter to be used in the current frame according to the mode information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.