Voiced, unvoiced or noise modes in a CELP vocoder
US5734789A · kind A · utility
88Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1994 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Apr 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0003
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bit rate Codebook Excited Linear Predictor (CELP) communication system which includes a transmitter that organizes a signal containing speech into frames of 40 millisecond duration, and classifies each frame as one of three modes: voiced and stationary, unvoiced or transient, and background noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.