AudiologyOnline Phone: 800-753-2160


Starkey Signature Series - Learn More

Using Listening Checks to Verify Directional Microphone Performance

Jason Galster, PhD, CCC-A

March 15, 2010

Share:

Question

Is it possible to tell if a directional microphone system on a child's hearing aid is working by doing a listening check in the classroom, when no electroacoustic equipment is available?

Answer

In some cases, yes. As you mention, electroacoustic verification of directional microphones is valuable and should always be the preferred method of evaluation. There are, however, a few tips to help you perform listening checks of directionality in a classroom setting. It's best to do an A-B comparison with the omnidirectional and directional modes, but it may be difficult to tell which mode the hearing aid is in during a listening check in the classroom. Therefore, it's helpful to have the hearing aid programming software in the classroom with you, so you can select the microphone modes during your listening check.

When performing the listening check, you should begin by speaking or playing an audio sample toward the "front" of the hearing aid. With the hearing aid in omnidirectional mode, rotate the device such that the "front" of the device is 180° from the sound source. There should be little to no decrease in the level of the signal. Repeat this with the device in directional mode. You should notice a more substantial decrease in the level of the signal. However, if the hearing aid only switches microphone modes in select channels, the decrease in level between omnidirectional and directional modes may be lessened.

It can be difficult to verify the behavior of automatic directional microphone systems. These are directional systems that switch automatically between omnidirectional and directional microphone modes. Knowing the basic logic that the hearing aid uses to trigger the switch to the directional mode will help you to make predictions about the system's behavior in the classroom. Depending on the acoustic characteristics of a given classroom, the hearing aids may or may not switch into directional mode. Understanding the design of the manufacturer's directional system may help you to determine if a hearing aid is designed to switch into the directional mode in a given classroom environment.

I hope you find these tips helpful. For more information on considerations for prescribing directional hearing aids to school-age children and a review of research in this area, please refer to my AudiologyOnline recorded course, Directional Microphones in Classrooms.

Jason Galster, Ph.D., is Director of Audiology Communications with Starkey Laboratories. He is responsible for ensuring that all product claims are accurate and backed by supporting evidence. Dr. Galster has held a clinical position as a pediatric audiologist and worked as a research audiologist on topics that include digital signal processing, physical room acoustics, and amplification in hearing-impaired pediatric populations.


jason galster

Jason Galster, PhD, CCC-A

Director of Audiology Communications with Starkey Laboratories

Jason Galster, Ph.D., is Director of Audiology Communications with Starkey Laboratories. He is responsible for ensuring that all product claims are accurate and backed by supporting evidence. Dr. Galster has held a clinical position as a pediatric audiologist and worked as a research audiologist on topics that include digital signal processing, physical room acoustics, and amplification in hearing-impaired pediatric populations.


Related Courses

Considerations for Patients with Severe-to-Profound Hearing Loss
Presented by Luis F. Camacho, AuD, FAAA
Recorded Webinar
Starkey

Presenter

Luis F. Camacho, AuD, FAAA
Course: #37889Level: Intermediate1 Hour
  'Great information'   Read Reviews
The past decade has brought about changes in technology and criteria for treatment of severe to profound hearing loss. The capabilities of power hearing aids have dramatically improved with effective feedback management, Bluetooth connectivity, rechargeability, advanced noise management influenced by Artificial Intelligence, and the availability of a variety of innovative accessories. This session will focus on selection criteria and available options for fitting severe to profound hearing loss.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $129/yr

Learn More

Livio AI & Fall Detection
Presented by Cassie Billiet, AuD
Recorded Webinar
Starkey

Presenter

Cassie Billiet, AuD
Course: #32525Level: Intermediate1 Hour
  'Since this software is knew to me I feel more confident in recommending it to my clients'   Read Reviews
A fall can potentially be a life-threatening event for many seniors. Informing family and friends in the event of a fall is important. This session will focus on the new fall detection feature available with the Livio AI Heathable Hearing Technology.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $129/yr

Learn More

Make a Connection: Integrating Assistive Devices to Increase the Hearing Aid Wearer’s Success
Presented by Michele Hurley, AuD, FAAA
Recorded Webinar
Starkey

Presenter

Michele Hurley, AuD, FAAA
Course: #39693Level: Intermediate1 Hour
  'Very clear presentation and an important topic for our patients, who need more help'   Read Reviews
Assistive devices can provide benefit in challenging environments and are available in the form of accessories, telecoils and loop systems. This course will review the rationale for recommending a number of assistive device technologies to increase success for the hearing aid wearer.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $129/yr

Learn More

Lasting Connections: Starkey Hearing Technologies 2.4 GHz Patient-focused Accessories
Presented by Michele Hurley, AuD, FAAA, Lawanda Chester, AuD
Recorded Webinar
Starkey

Presenters

Michele Hurley, AuD, FAAALawanda Chester, AuD
Course: #32526Level: Intermediate1 Hour
  'It is of significant benefit to the dispensing audiologist'   Read Reviews
Wireless connectivity is an integral part of the Livio AI and Livio hearing devices. Starkey's line of 2.4 GHz accessories provides patient's with connectivity when and how they need it. This session will focus on the 2.4 GHz accessories, their uses and how they are integrated into the user's daily life.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $129/yr

Learn More

Starkey Government Services: Elevating the November 2024 Contract
Presented by Andrea Hannan-Dawkes, AuD, FAAA
Recorded Webinar
Starkey

Presenter

Andrea Hannan-Dawkes, AuD, FAAA
Course: #39963Level: Intermediate1 Hour
  'Very informative, especially the custom hearing aids that are rechargeable makes it more convenient for clients to handle hearing aids easier'   Read Reviews
Starkey continues to deliver better hearing for all with next generation hearing aid technology that makes it easy to deliver maximum benefit for a diverse range of patients. This session will provide an overview of the Starkey products, features and accessories included in the November 2024 contract.

View this Course for FREE.
Need CEUs? Become a AudiologyOnline member to get unlimited CEUs.

Only $129/yr

Learn More

Our site uses cookies to improve your experience. By using our site, you agree to our Privacy Policy.