Method and apparatus for speech encoding, speech decoding, and speech post processing
US5651092A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speech analysis unit and a window locating unit are implemented in a speech encoding apparatus. The speech encoding apparatus encodes input speech per analysis frame defined having a fixed length and is offset at fixed interval. the speech analysis unit extracts frequency spectrum parameters of the input speech taken within an analysis window. The location of the analysis window is specified by the window locating unit. The window locating unit selects the location of the analysis window which is used in extracting the frequency spectrum characteristic parameters at the speech analysis unit. In this case, depending upon the characteristic parameter of the input speech within and near the frame concerned, the window locating unit selects the location of the analysis window within the range which is not to be exceeding the range of the frame concerned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.