Methods and devices for registering voiceprint and for authenticating voiceprint
US11348590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2016 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jan 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides methods and devices for registering a voiceprint and authenticating a voiceprint. The method for registering a voiceprint includes performing a frame alignment operation on a registration character string inputted by a user in voice to extract first acoustic features of each first character constituting the registration character string; calculating a first posterior probability of the first acoustic features of each first character in a global Gaussian Mixture Model (GMM) model to perform a Baum-Welch (BW) statistic; extracting first vector features of each first character through a preset vector feature extractor configured for multi-character; and stitching the first vector features of each first character sequentially, to obtain a registration voiceprint model of the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.