Multirate speech codecs
US6940967B2 · kind B2 · utility
7Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2004 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Mar 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of determining a codec mode for encoding a frame in a communications system, the method comprising the steps of: receiving a sequence of signal samples arranged in frames; analysing a current frame to select a codec mode appropriate for the current frame; predicting the characteristics of a subsequent frame using lookahead samples from the subsequent frame; and determining a codec mode for the current frame and the subsequent frame which suits the current frame and also suits a subsequent frame based on the predicted characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.