Detection of replay attack
US11276409B2 · kind B2 · utility
13Cited by
53References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Jan 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In order to detect a replay attack on a voice biometrics system, a first signal from received sound is generated at a first microphone, and a second signal from the received sound is generated at a second microphone. The first and second signals are used to determine a location of an apparent source of the received sound. It is determined that the received sound may result from a replay attack if the apparent source of the received sound is diffuse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.