Speech coding using sparse vector codebook and cyclic shift techniques
US4991214A · kind A · utility
19Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | May 9, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Speech is analyzed to derive the parameters of a synthesis filter and the parameters of a suitable excitation which is selected from a codebook of excitation frames. The selection of the codebook entry is facilitated by determining a single-pulse excitation (e.g., using conventional multipulse excitation techniques), and using the position of this pulse to narrow the codebook search.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.