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

Patent ·
OSTI ID:871746
 [1];  [1]
  1. Albuquerque, NM
+ Show Author Affiliations

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.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 5787187
OSTI ID:
871746
Country of Publication:
United States
Language:
English

References (9)

Measurement of the eardrum impedance of human ears journal January 1983
Cepstral analysis technique for automatic speaker verification journal April 1981
Specification of the geometry of the human ear canal for the prediction of sound‐pressure level distribution journal June 1989
Text-independent speaker identification journal October 1994
Cepstrum Pitch Determination journal February 1967
The behavior of the acoustic distortion product, 2 f 1− f 2, from the human ear and its relation to auditory sensitivity journal August 1990
Effectiveness of linear prediction characteristics of the speech wave for automatic speaker identification and verification journal June 1974
Speech Analysis and Synthesis by Linear Prediction of the Speech Wave journal August 1971
Synthesis and Characterization of Bi 4 Ti 3 O 12 Thin Films by Sol-Gel Processing journal September 1993

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systems
methods
biometric
identification
acoustic
properties
canal
teaches
verifying
recognizing
person
identity
based
measurements
response
individual
comprises
emission
device
emits
source
signal
designated
computer
detection
detects
digitizes
detected
stores
data
computer-implemented
algorithms
analyze
produce
ear-canal
feature
obtained
enrollment
stored
recording
medium
compare
produced
subsequent
access
attempt
determine
previously
enrolled
adapted
remote
applications
response signal
acoustic source
acoustic properties
detection device
data obtained
acoustic emission
recording medium
data produced
emission device
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