Patent ID: 11934506
Assignee: CIRRUS LOGIC INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for use in a biometric process, comprising:
applying an acoustic stimulus to a user's ear for a first function and for a second function, wherein the first function is to notify the user that biometric authentication or biometric enrolment or on-ear detection is taking place and the second function is to perform the biometric process;
receiving a response signal of a user's ear to the acoustic stimulus;
extracting, from the response signal, one or more features for use in the biometric process;
determining that the response signal is unsuitable for use in the biometric process; and
responsive to determining that the response signal is unsuitable for use in the biometric process, modifying the acoustic stimulus to improve the signal-to-noise ratio of the received response signal.