BBVA has been granted a patent for methods of authenticating users or speakers using speech signals and user credentials. The process involves extracting voiceprints, comparing them to reference voiceprints, and updating them upon successful authentication. The method also includes detecting spoofing attempts based on predefined criteria. GlobalData’s report on BBVA gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on BBVA, Blockchain-based network authentication was a key innovation area identified from patents. BBVA's grant share as of January 2024 was 40%. Grant share is based on the ratio of number of grants to total number of patents.
Voice authentication method with spoofing detection
A recently granted patent (Publication Number: US11869513B2) discloses a method for authenticating users or speakers based on input speech signals and user credentials. The method involves determining the validity of the input speech signal by analyzing spoofing-related features, such as multi-channel replay attack indicia and ultrasonic pseudorandom codes. A speech voiceprint is extracted from the input signal and compared to a reference voiceprint associated with the user credentials to authenticate the user. The patent also details techniques for updating the reference voiceprint based on successful authentications, ensuring accurate user authentication over time.
Furthermore, the patent describes a computing system that embodies the instructions for executing the authentication method, emphasizing the importance of detecting spoofing attempts through advanced features like magnetically-inferred replay attack indicia. By prompting users to utter predefined utterances and capturing them for comparison, the method ensures a high level of accuracy in determining the validity of input speech signals. The patent also outlines the process of updating the reference voiceprint using a formula that balances the importance of the existing reference voiceprint and the newly extracted speech voiceprint. Overall, the patent presents a comprehensive approach to user authentication through speech analysis, incorporating various spoofing-detection criteria and advanced techniques to enhance security and accuracy in the authentication process.
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