Speech encoding using multiple bit rates
US8452606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method system and program for encoding and decoding a speech signal including error correction data. The method comprises: receiving a speech signal comprising successive frames, for each of a plurality of frames of the speech signal, analysing the speech signal to determine side information and a residual signal, encoding the residual signal at a first bit rate, and generating an output bitstream based on the residual signal encoded at the first bit rate, and for at least one of the plurality of frames of the speech signal, encoding the residual signal at a second bit rate that is lower than the first bit rate; and generating error correction data based on the residual signal encoded at the second bit rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.