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Systems and methods for biometric identification using the acoustic properties of the ear canal

United States Patent

*** EXPIRED ***
5,787,187
July 28, 1998
View the Complete Patent at the US Patent & Trademark Office
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The present invention teaches systems and methods for verifying or recognizing a person's identity based on measurements of the acoustic response of the individual's ear canal. The system comprises an acoustic emission device, which emits an acoustic source signal s(t), designated by a computer, into the ear canal of an individual, and an acoustic response detection device, which detects the acoustic response signal f(t). A computer digitizes the response (detected) signal f(t) and stores the data. Computer-implemented algorithms analyze the response signal f(t) to produce ear-canal feature data. The ear-canal feature data obtained during enrollment is stored on the computer, or some other recording medium, to compare the enrollment data with ear-canal feature data produced in a subsequent access attempt, to determine if the individual has previously been enrolled. The system can also be adapted for remote access applications.
Bouchard; Ann Marie (Albuquerque, NM), Osbourn; Gordon Cecil (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
08/ 626,704
April 1, 1996
GOVERNMENT RIGHTS This invention was made with United States Government support under Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in this invention.