Reducing sparseness in coded speech signals
US6301556A · kind A · utility
32Cited by
3References
68Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for reducing sparseness in a coded speech signal. Sparse codebook values are generated from a codebook. An anti-sparseness operation is performed on the sparse codebook values to produce output codebook values having a greater density of non-zero values than the sparse codebook values. The output codebook values are processed by a speech processor to generate an encoded speech signal during an encoding operation or a decoded speech signal during a decoding operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.