Speech recognition over lossy networks with rejection threshold
US7171359B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Recognizing a stream of speech received as speech vectors over a lossy communications link includes constructing for a speech recognizer a series of speech vectors from packets received over a lossy packetized transmission link, wherein some of the packets associated with each speech vector are lost or corrupted during transmission. Each constructed speech vector is multi-dimensional and includes associated features. Potentially corrupted features within the speech vector are indicated to the speech recognizer when present. Speech recognition is attempted at the speech recognizer on the speech vectors when corrupted features are present. This recognition may be based only on certain or valid features within each speech vector. Retransmission of a missing or corrupted packet is requested when corrupted values are indicated by the indicating step and when the attempted recognition step fails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.