CA2191442A1 - System and Method for Measuring Acoustic Reflectance - Google Patents

System and Method for Measuring Acoustic Reflectance

Info

Publication number
CA2191442A1
CA2191442A1 CA2191442A CA2191442A CA2191442A1 CA 2191442 A1 CA2191442 A1 CA 2191442A1 CA 2191442 A CA2191442 A CA 2191442A CA 2191442 A CA2191442 A CA 2191442A CA 2191442 A1 CA2191442 A1 CA 2191442A1
Authority
CA
Canada
Prior art keywords
ear
acoustic
termination
linear
unknown
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2191442A
Other languages
French (fr)
Other versions
CA2191442C (en
Inventor
Douglas H. Keefe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Washington
Original Assignee
Douglas H. Keefe
University Of Washington
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Douglas H. Keefe, University Of Washington filed Critical Douglas H. Keefe
Publication of CA2191442A1 publication Critical patent/CA2191442A1/en
Application granted granted Critical
Publication of CA2191442C publication Critical patent/CA2191442C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/12—Audiometering
    • A61B5/121—Audiometering evaluating hearing capacity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/12—Audiometering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H15/00—Measuring mechanical or acoustic impedance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7232—Signal processing specially adapted for physiological signals or for diagnostic purposes involving compression of the physiological signal, e.g. to extend the signal recording period
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02491—Materials with nonlinear acoustic properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02872—Pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/92—Computer assisted medical diagnostics
    • Y10S128/925—Neural network

Abstract

A system and method of measuring the linear and nonlinear response of an unknown acoustic termination uses a small probe assembly containing a sound source and microphone to determine the reflection function of the unknown acoustic termination. The probe assembly is used with a calibration tube to calculate an electrical signal that will provide a desired acoustic stimulus signal to the acoustic termination. The calibration tube is also used to characterize the signal processing properties of the sound source and microphone, as well as other associated signal processing circuits such as amplifiers, filters, and the like. The calibrated system is subsequently coupled to the unknown acoustic termination to deliver the acoustic stimulus signal. The reflection function is indicative of the power transferred to the unknown acoustic termination. The measurement of the linear transfer characteristic is applicable to any unknown acoustic termination such as a musical instrument or the auditory system. The probe assembly is sized to be positioned directly within the outer portion of the ear and measure the linear characteristics of the ear. The system is further able to measure the nonlinear transfer characteristics of the ear by measuring the linear response at multiple levels of the acoustic stimulus. The system is particularly useful in testing the response of the middle ear and inner ear of humans or other animals.
CA002191442A 1994-06-06 1995-06-06 System and method for measuring acoustic reflectance Expired - Lifetime CA2191442C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US25431194A 1994-06-06 1994-06-06
US08/254,311 1994-06-06
PCT/US1995/006259 WO1995033405A1 (en) 1994-06-06 1995-06-06 System and method for measuring acoustic reflectance

Publications (2)

Publication Number Publication Date
CA2191442A1 true CA2191442A1 (en) 1995-12-14
CA2191442C CA2191442C (en) 1999-11-16

Family

ID=22963788

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002191442A Expired - Lifetime CA2191442C (en) 1994-06-06 1995-06-06 System and method for measuring acoustic reflectance

Country Status (8)

Country Link
US (2) US5594174A (en)
EP (1) EP0764003B1 (en)
JP (1) JPH10504201A (en)
AU (1) AU2761295A (en)
CA (1) CA2191442C (en)
DE (1) DE69523306T2 (en)
DK (1) DK0764003T3 (en)
WO (1) WO1995033405A1 (en)

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US8241224B2 (en) 2005-03-16 2012-08-14 Sonicom, Inc. Test battery system and method for assessment of auditory function

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US5792072A (en) * 1994-06-06 1998-08-11 University Of Washington System and method for measuring acoustic reflectance
US5868682A (en) * 1995-01-26 1999-02-09 Mdi Instruments, Inc. Device and process for generating and measuring the shape of an acoustic reflectance curve of an ear
US5792073A (en) * 1996-01-23 1998-08-11 Boys Town National Research Hospital System and method for acoustic response measurement in the ear canal
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US5919143A (en) * 1998-01-12 1999-07-06 Mdi Instruments, Inc. Apparatus and method for analysis of acoustic reflectance and thermal radiation of an ear
US5902252A (en) 1998-01-23 1999-05-11 Mdi Instruments, Inc. Device and process for measuring acoustic reflectance
FI981990A (en) * 1998-09-15 2000-03-16 Nokia Networks Oy Measurement method and measuring device
US6110126A (en) * 1998-12-17 2000-08-29 Zoth; Peter Audiological screening method and apparatus
US6231521B1 (en) * 1998-12-17 2001-05-15 Peter Zoth Audiological screening method and apparatus
WO2002062221A1 (en) * 2001-02-07 2002-08-15 East Carolina University Hearing assessment via computer network
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US8244365B2 (en) * 2004-05-10 2012-08-14 Cochlear Limited Simultaneous delivery of electrical and acoustical stimulation in a hearing prosthesis
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US7925355B2 (en) * 2006-07-17 2011-04-12 Advanced Bionics, Llc Systems and methods for determining a threshold current level required to evoke a stapedial muscle reflex
US8103354B2 (en) * 2006-07-17 2012-01-24 Advanced Bionics, Llc Systems and methods for determining a threshold current level required to evoke a stapedial muscle reflex
US8239190B2 (en) * 2006-08-22 2012-08-07 Qualcomm Incorporated Time-warping frames of wideband vocoder
FR2911060B1 (en) * 2007-01-08 2009-09-18 Univ D Auvergne Clermont 1 Eta NONINVASIVE METHOD OF DETECTING AN ELECTRICAL PARAMETER DEPENDING ON INTRALABYRINTHIC (PIL) PRESSURE IN A SUBJECT
WO2008097904A2 (en) * 2007-02-02 2008-08-14 Personics Holdings Inc. Method and device for evaluating auditory health
US9402990B2 (en) * 2007-03-20 2016-08-02 Cochlear Limited Securing an implanted medical device in a patient
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US10368785B2 (en) 2008-10-24 2019-08-06 East Carolina University In-ear hearing test probe devices and methods and systems using same
US8839657B2 (en) 2011-05-19 2014-09-23 Northwestern University Calibration system and method for acoustic probes
US9191761B2 (en) * 2012-01-30 2015-11-17 Etymotic Research, Inc. Hearing testing probe with integrated temperature and humidity sensors and active temperature control
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8241224B2 (en) 2005-03-16 2012-08-14 Sonicom, Inc. Test battery system and method for assessment of auditory function
US8840565B2 (en) 2005-03-16 2014-09-23 Sonicom, Inc. Test battery system and method for assessment of auditory function

Also Published As

Publication number Publication date
AU2761295A (en) 1996-01-04
US5651371A (en) 1997-07-29
CA2191442C (en) 1999-11-16
JPH10504201A (en) 1998-04-28
DE69523306T2 (en) 2002-07-11
EP0764003B1 (en) 2001-10-17
DK0764003T3 (en) 2002-02-11
EP0764003A1 (en) 1997-03-26
DE69523306D1 (en) 2001-11-22
US5594174A (en) 1997-01-14
WO1995033405A1 (en) 1995-12-14

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Effective date: 20150608