Automatic language identification/verification system
US5689616A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A language identification and verification system is described whereby language identification is determined by finding the closest match of a speech utterance to multiple speaker sets. The language identification and verification system is implemented through use of a speaker identification/verification system as a baseline to find a set of well matched speakers in each of a plurality of languages. A comparison of unknown speech to speech features from such well-matched speakers is then made and a language decision is arrived on based on a closest match between the unknown speech features and speech features for such well matched reference speakers in a particular language. To avoid a problem associated with prior-art language identification systems, wherein speech feature are based on short-term spectral features determined at a system frame rate--thereby seriously limiting the resolution and accuracy of such prior-art systems, the invention uses speech features derived from vocalic or syllabic nuclei, from which related phonetic speech features may then be extracted. Detection of such vocalic centers or syllabic nuclei is accomplished using a trained back-error propagation multi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.