Patent ID: 11961535
Assignee: INTEL CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A processor-implemented method for prevention of laser-based audio attacks, the method comprising:
calculating, by a processor-based system, a time alignment metric based on time delays associated with peaks of cross correlations between signals received from a plurality of microphones of an array of microphones;
calculating, by the processor-based system, a similarity metric based on magnitudes associated with the peaks of the cross correlations;
generating, by the processor-based system, a first attack indicator based on the time alignment metric;
generating, by the processor-based system, a second attack indicator based on the similarity metric; and
providing, by the processor-based system, warning of a laser-based audio attack based on the first attack indicator and/or the second attack indicator.