Method and apparatus for detecting splicing attacks on a speaker verification system
US10276166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2014 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of detecting an occurrence of splicing in a speech signal includes comparing one or more discontinuities in the test speech signal to one or more reference speech signals corresponding to the test speech signal. The method may further include calculating a frame-based spectral-like representation ST of the speech signal, and calculating a frame-based spectral-like representation SE of a reference speech signal corresponding to the speech signal. The method further includes aligning ST and SE in time and frequency, calculating a distance function associated with aligned ST and SE, and evaluating the distance function to determine a score. The method also includes comparing the score to a threshold to detect if splicing occurs in the speech signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.