Skip to content
American Academy of Audiology
  • PRACTICE RESOURCES
    • Practice Guidelines and Standards
    • Coding
    • Practice Management Tools
    • Medicare/Medicaid
    • Compliance
    • Quality Payment Program
  • EDUCATION & EVENTS
    • Event Calendar
    • Continuing Education
    • Online Learning and Certificate Programs
    • Research Grants and Scholarships
    • Faculty and Preceptor Resources
  • AAA ANNUAL CONVENTION
    • Attend
      • Registration
      • Hotel Information
      • Travel Information
      • Accessibility Services
      • Child Care Options
    • Program and Events
      • Call for Abstracts
      • Schedule-at-a-Glance
      • Educational Sessions
      • Events and Activities
      • Open Houses
    • Exhibit Hall
      • Exhibitor List
    • Exhibitor Information
      • Exhibitor Setup and Hall Schedule
      • Exhibitor Registration and Housing
    • Exhibit and Sponsorship Opportunities
      • Become an Exhibitor
      • Become a Sponsor or Partner
      • Sponsors and Partners
    • About
  • NEWS & PUBLICATIONS
    • News
      • News from the Academy
      • Audiology in the News
      • Academy in the News
    • Audiology Today
    • Journal of the American Academy of Audiology
    • Advertising
    • Press and Media Information
  • CAREERS
    • Career Center
    • Certification
    • Become an Audiologist
    • Doctoral Programs in Audiology
    • Recruiting
    • New Professional Toolkit
  • ADVOCACY
    • Legislative and Regulatory Activities
      • State Affairs
      • Federal Affairs
    • Legislative Action Center
    • Government Relations News
    • Public Awareness
  • CONSUMERS
    • What Is an Audiologist
    • Hearing and Balance Symptoms and Conditions
    • Managing Hearing Loss
    • Seniors and Hearing Loss
    • Children and Hearing Loss
    • OTC Hearing Aid
  • ABOUT THE ACADEMY
    • Leadership
    • Committees and Task Forces
    • Get Involved
    • Honors and Awards
    • Sponsorships and Corporate Partners
    • Contact Us
  • MEMBERSHIP
    • Benefits
    • Membership Renewals
    • Member Directory
    • Ethics
FacebookTwitterLinkedinYoutubeInstagram
  • Students
  • Get Involved
  • Donate
  • Renew
American Academy of Audiology
Member Login
  • PRACTICE RESOURCES
    • Practice Guidelines and Standards
    • Coding
    • Practice Management Tools
    • Medicare/Medicaid
    • Compliance
    • Quality Payment Program
  • EDUCATION & EVENTS
    • Event Calendar
    • Continuing Education
    • Online Learning and Certificate Programs
    • Research Grants and Scholarships
    • Faculty and Preceptor Resources
  • AAA ANNUAL CONVENTION
    • Attend
      • Registration
      • Hotel Information
      • Travel Information
      • Accessibility Services
      • Child Care Options
    • Program and Events
      • Call for Abstracts
      • Schedule-at-a-Glance
      • Educational Sessions
      • Events and Activities
      • Open Houses
    • Exhibit Hall
      • Exhibitor List
    • Exhibitor Information
      • Exhibitor Setup and Hall Schedule
      • Exhibitor Registration and Housing
    • Exhibit and Sponsorship Opportunities
      • Become an Exhibitor
      • Become a Sponsor or Partner
      • Sponsors and Partners
    • About
  • NEWS & PUBLICATIONS
    • News
      • News from the Academy
      • Audiology in the News
      • Academy in the News
    • Audiology Today
    • Journal of the American Academy of Audiology
    • Advertising
    • Press and Media Information
  • CAREERS
    • Career Center
    • Certification
    • Become an Audiologist
    • Doctoral Programs in Audiology
    • Recruiting
    • New Professional Toolkit
  • ADVOCACY
    • Legislative and Regulatory Activities
      • State Affairs
      • Federal Affairs
    • Legislative Action Center
    • Government Relations News
    • Public Awareness
  • CONSUMERS
    • What Is an Audiologist
    • Hearing and Balance Symptoms and Conditions
    • Managing Hearing Loss
    • Seniors and Hearing Loss
    • Children and Hearing Loss
    • OTC Hearing Aid
  • ABOUT THE ACADEMY
    • Leadership
    • Committees and Task Forces
    • Get Involved
    • Honors and Awards
    • Sponsorships and Corporate Partners
    • Contact Us
  • MEMBERSHIP
    • Benefits
    • Membership Renewals
    • Member Directory
    • Ethics
wave-mark-white
December 9, 2022

Otoacoustic Emissions Hearing Screenings Via Your Smartphone

  • Audiology in the News

Otoacoustic emissions (OAEs) are sounds generated from the cochlea. The sounds are transmitted across the middle ear to the external ear canal, and can be recorded in the outer ear. A present OAE indicates an essentially normally functioning inner ear. OAEs can be used to screen hearing, as in newborn hearing screenings (NBHS) or as a diagnostic measure to cross check other audiological findings. 

It is common practice for high-income, first-world countries to have universal newborn hearing screening programs that may include the use of OAEs. Early identification and intervention are known to mitigate the negative effects of hearing loss on neurodevelopment. However, OAE equipment is expensive, which can limit its use in low- and middle-income countries. 

Chan and colleagues designed and tested clinically a low-cost OAE probe made from off-the-shelf earbuds and microphone, with a material cost of about $10 in U.S. currency. The design sends two pure-tone signals using each of the earbuds. The earbuds are not placed in the ear, but rather, near the smartphone. The distortion product OAE is then measured using a microphone attached to the probe head. Data are analyzed using algorithms that run on the smartphone. These real-time algorithms run on the smartphone to perform calibration, noise detection, and automatic pass or refer testing for hearing screening.

The authors conducted a study on 201 ears of patients between one week and 20 years of age. Distortion product OAEs were first measured using a commercial OAE device, followed with the smartphone system using the same probe tip. Both devices were calibrated to emit the two tones at 65- and 55-dB SPL respectively, and measurements were obtained for the 2, 3, 4 and 5 kHz bands. 

Across these age groups, the authors’ system obtained accuracies ranging from 84 percent to 100 percent, while the commercial device obtained accuracies ranging from 75 percent to 96 percent. Sensitivity with the experimental device was as good as or better than the commercial device, with specificity being slightly lower in the smartphone system when compared to the commercial device.

The authors concluded that the key advantage of using off-the-shelf earbuds and smartphones is that custom electronics do not need to be manufactured, which significantly lowers development costs. They note, however, the cost of OAE devices is only one factor associated with addressing the complex public-health problem of hearing screening in low- and middle-income countries.

There are other factors involved including establishing strong partnerships, support for follow-ups, and the cost of regulatory clearance. Financial support is required to fund the screening staff/other health-care workers who would be administering the test. To increase its use globally, the authors have open-sourced their hardware and software code to allow anyone to download and recreate the smartphone device.

In summary, the low-cost OAE system that uses off-the-shelf earbuds was as sensitive as commercial equipment. Early detection of hearing loss is challenging in low- and middle-income countries due to lack of access to affordable hearing-screening tools. Compared with commercial OAE devices that cost thousands of dollars, the frugal earbud-based OAE system has the potential to increase access to hearing screening in resource-constrained environments.

Learn more at the reference below or go Behind the Paper.

Reference

Chan J, Ali N, Najafi A, Meehan A, Mancl LR; Gallagher E; Bly R; Gollakota S. (2022) An off-the-shelf otoacoustic emission probe for hearing screening via a smartphone. Nat Biomed Eng 6(11):1203-1213.

Share this

Related Posts

Which Animal Has the Best Hearing?

Clinical Decision Support for Vestibular Diagnosis: Large-Scale Machine Learning with Lived Experience Coaching

Using Supply and Demand to Identify Shortages in the Hearing Health Care Professional Workforce

Recent Posts

Academy Recognizes First Distinguished Fellows of the American Academy of Audiology (DFAAA)
Academy News

Academy Recognizes First Distinguished Fellows of the American Academy of Audiology (DFAAA)

The American Academy of Audiology is proud to announce the inaugural cohort of Distinguished Fellows of the American Academy of Audiology (DFAAA), a prestigious honor…

Read More
The Government Is Shutdown, Now What?
Government Relations News

The Government Is Shutdown, Now What?

Congress has failed to avert a government shutdown. The Department of Health and Human Services (HHS) is expected to face significant workforce reductions across its…

Read More
Meet the Academy Board of Directors
Academy News

Meet the Academy Board of Directors

The American Academy of Audiology is proud to announce its Board of Directors, a group of dedicated leaders guiding the profession forward and ensuring the…

Read More
wave-mark

Join the Academy

Academy members receive many benefits for professional development, practice management, and community development.

Become a Member
COMM24-Academy_Website_Graphics-revised_logo(W)

American Academy of Audiology
11480 Commerce Park Drive
Suite 220
Reston, VA 20191

Tel: 703-790-8466
Fax: 703-790-8631

  • Practice Resources
  • Education and Events
  • News and Publications
  • Careers
  • Advocacy
  • About the Academy
  • Consumers and Patients
  • Students
  • Donate
  • Get Involved
  • Contact Us
  • Privacy Policy
  • Antitrust Policy and Guidelines
  • Terms of Use Policy
  • Accessibility Statement
  • Sitemap

© Copyright 2025 American Academy of Audiology

Website by Yoko Co

This content is an exclusive benefit for
American Academy of Audiology members.

If you’re a member, log in and you’ll get immediate access.

 

Member Login

 

If you’re not yet a member, you’ll be interested to know that joining not only gives you access to top-notch resources like this one, but also invitations to member-only events, inclusion in the member directory, participation in professional forums, and access to patient resources, tools, and continuing education. Join today!

This content is an exclusive benefit for
American Academy of Audiology members.

If you’re a member, log in and you’ll get immediate access.

 

Member Login

 

If you’re not yet a member, you’ll be interested to know that joining not only gives you access to top-notch resources like this one, but also invitations to member-only events, inclusion in the member directory, participation in professional forums, and access to patient resources, tools, and continuing education. Join today!

Scroll To Top
We use cookies to improve your experience on our site. By continuing to use our site, you accept our use of cookies. To learn more, please see our Privacy Policy.