Methods, apparatus and systems for biometric processes
US12149895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Jan 5, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2103
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method in a biometric authentication system, generating an acoustic stimulus for application to a user's ear; receiving an audio signal representing a response of the user's ear canal to the acoustic stimulus; adapting an ear canal response estimate of the user's ear canal to the acoustic stimulus to reduce an error between the audio signal and the ear canal response estimate; calculating one or more quality metrics, the quality metrics comprising one or more of: an ear canal response estimate quality metric comprising one or more energy characteristics of the ear canal response estimate; an error quality metric derived from the error; an audio response quality metric comprising one or more statistical characteristics of the audio signal; and determining a validity of the audio signal for use in a biometric process based on the quality metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.