CPC G06F 21/32 (2013.01) [G01R 33/0094 (2013.01); G06F 21/554 (2013.01); G10L 15/24 (2013.01); G10L 17/02 (2013.01); G10L 17/26 (2013.01); G10L 25/03 (2013.01); H04K 1/00 (2013.01); H04L 9/3231 (2013.01); H04L 63/0861 (2013.01); H04L 63/1466 (2013.01); H04L 63/1483 (2013.01); H04W 12/122 (2021.01); H04R 3/00 (2013.01); H04R 3/005 (2013.01); H04R 2499/13 (2013.01)] | 20 Claims |
1. A method of detecting a replay attack in a speaker recognition system, the method comprising:
receiving an audio signal comprising speech;
receiving a magnetometer signal;
determining a syllabic rate or an articulation rate of the speech;
detecting modulation of at least one feature of the magnetometer signal at the syllabic rate or the articulation rate;
determining based on the detecting that the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker; and
determining that a replay attack may have taken place.
|