Excitation vector generator, speech coder and speech decoder
US8086450B2 · kind B2 · utility
0Cited by
39References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Aug 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0013
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A code excited linear prediction type speech coder, which includes a seed storage that stores seeds used as an initial state of oscillation, and an oscillator that generates different vector sequences in accordance with values of the seeds stored in the seed storage and outputs the vector sequences as excitation vectors. The speech coder also includes a linear predictive coding synthesis filter that receives, as input, the excitation vectors, which are the vector sequences generated in accordance with the values of the seeds, that synthesizes the excitation vectors, and that outputs a synthesized speech.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.