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Earmuffs and BTEs

Lee D. Hager

January 3, 2005

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Question

I wear BTE hearing aids and work in a factory. I have NIHL [noise induced hearing loss] and wear earmuffs over my hearing aids. Safety glasses are required in my workplace. I find the fit of my earmuffs very tight, the outer ear is being pinched. Is there a type of extender for earmuffs to give room for the hearing aids? I have Peltor Tactical Pro earmuffs. They allow me to understand my coworkers' speech and protect my hearing, I just need more room.

Answer

You are in a difficult position - protecting the hearing you have while accommodating your need to hear on the job can be tough. Earmuffs achieve their protection from noise by sealing completely around the outside of the pinna, or outer ear. An "extender" as you describe would most likely break the seal around the outside of the pinna and make the earmuffs ineffective. The cushions on most of these devices are soft enough to accommodate safety glass frames without breaking the acoustic "seal", but be careful. The simplest way to test these devices is to simply listen to noise with the muff in place as you use it along with your safety glasses and other equipment, then lift it off. If you don't hear a significant difference in sound between the "muff on" and "muff off" conditions, it's likely that the muff is not doing you much good.

Your approach of using hearing protectors in conjunction with your hearing aids is generally very good. Here are a couple of ideas that may help.

  1. Can you get enough volume (gain or output) from the Peltor Tactical Pro devices you use now to enable you to hear without your hearing aids? Most of these "sound resoration" hearing protection devices have volume controls and can provide up to 80-82 dB output. That might that be enough to permit you to hear without your BTE aids in place.

  2. While the Peltor device is very good at what it does, it has a relatively small earcup. You may want to investigate getting the same sound restoration technology in a device with a larger earcup to provide room for your BTE aid to reside comfortably. Peltor has other models of earmuff with similar technology, and other manufacturers like Bilsom (the Targo and 707), Howard Leight (Thunder and Leightning models), and others manufacture devices that may meet your needs.
It's important to keep in mind that hearing aids are not designed to be used as hearing protectors. In many cases, hearing aids are vented, allowing noise to come in from the outside. An approach like yours, to use your aids in conjunction with hearing protectors, or using hearing protectors that may be able to substitute for hearing aids, are the safest way to protect your hearing and maintain your ability to communicate.

Lee Hager is Hearing Loss Prevention Consultant for Sonomax Hearing Healthcare, Inc. and has worked to prevent hearing loss in industry for over 16 years. Contact him at lhager@sonomax.com


Lee D. Hager

Hearing Loss Prevention Consultant for Sonomax Hearing Healthcare, Inc.

Lee brings nearly 20 years of experience to his position as Hearing Loss Prevention Consultant for Sonomax Hearing Healthcare, Inc.  Sonomax is a leading provider of new technology in hearing protection devices.  Previously, his tenure with James, Anderson & Associates, Inc. provided him the opportunity to consult with Fortune 5 companies regarding the quality and integrity of their hearing conservation programs, including noise exposure monitoring and hearing test data management. He has served as President of the National Hearing Conservation Association (NHCA);chair of the Noise Committee of the American Industrial Hygiene Association (AIHA);as NIOSH National Occupational Research Agenda (NORA) Noise Team member;and with ANSI Working Group S12/WG11 on hearing protector evaluation and labeling issues.  He has presented at major conferences on noise and hearing topics, having received the AIHA Noise Committee Outstanding Lecture Award in 2003.  He publishes regularly in occupational health and safety publications, and he cares about your ears. I am employed by Sonomax Hearing Healthcare, Inc., a hearing protection manufacturer. While Sonomax technology may be part of an overall best practices hearing loss prevention program, the company and technology will not be discussed in this presentation


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