Provision of speech coder gain information using multiple coding modes
US5657418A · kind A · utility
32Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1991 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Sep 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a speech coder (100), excitation source gain information (802) is transmitted along with a coding mode indicator. The coding mode indicator indicates how the gain information is to be interpreted. In one embodiment, the coding mode indicator can also be utilized to control which of a plurality of excitation sources (202, 206-208) are utilized when synthesizing the speech. The coding mode itself is selected as a function of the periodicity of an input speech signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.