Speaker verification system
US5121428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1990 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Nov 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a speaker verification system, a detecting part detects a speech section of an input speech signal by using a time-series acoustic parameters thereof. A segmentation part calculates individuality information for segmentation by using the time-series acoustic parameters within the speech section, and segments the input speech section into a plurality of blocks based on the individuality information. A feature extracting part extracts features of an unknown speaker for every segmented block by using the time-series acoustic parameters. A distance calculating part calculates a distance between the features of the speaker extracted by the feature extracting part and reference features stored in a memory. A decision part makes a decision as to whether or not the unknown speaker is a real speaker by comparing the calculated distance with a predetermined threshold value. Segmentation is made by calculating a primary moment of the spectrum, over a block, and finding successive values which satisfy a predetermined criterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.