Speaker verifier using nearest-neighbor distance measure
US5339385A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jul 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/37
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A speaker verification system which accepts or rejects the claimed identity of an individual based on analysis and measurements of the speaker's utterances. The utterances are elicited by prompting the individual seeking identification to read test phrases chosen at random by the verification system composed of words from a small vocabulary. Nearest-neighbor distances between speech frames derived from such spoken test phrases and speech frames of corresponding vocabulary "words" from previously stored utterances of the speaker seeking identification are computed along with distances between such spoken test phrases and corresponding vocabulary words for a set of reference speakers. The claim for identification is accepted or rejected based on the relationship among such distances and a predetermined threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.