Hearing aid noise in car

Posted by bobbiefriend @bobbiefriend, Aug 9 5:43pm

Sometimes when I start my 2005 car, my hearing aids seem to sync with the engine running and create an annoying loud buzz or hum in my ears until I turn the car off. Someone on this site suggested a good simple solution to my problem, but now I can't remember what it was. Help.

@bobbiefriend, I'll bet the hearing aids are switching to telecoil mode. This is probably the biggest reason that I tell people to get a MANUEL program to control the telecoil and not let the hearing aids determine when the telecoil should be used (automatic telecoil). The fix is simple. Your audiologist will give you a separate program that you will use when you need to take advantage of an induction loop.
Tony in Michigan

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I'm wondering if your hearing aids are set on M/T mode. That would mean that both your regular microphone and telecoil microphone are working together. In total Telecoil mode you would not hear anything other than that hum. Perhaps you have an auto setting on your hearing aids that are sending them into one mode or another. I often used to listen to a Walkman radio with a neckloop when riding a long distance in the car. Today the cars have better radios, so I don't do that anymore. Mentioning it because I found that there was interference in some cars more than in others. We had a Pontiac mini van that was terrible this way. Other cars were not. You may have an automatic switch for your HA programs. For some reason it could be switching to M/T mode. I always tell people to be sure go ask for controls with telecoil and volume that you can change yourself. Automatic is not better.

Ask your hearing aid provider about this.

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I was just about to post a comment that I have not noticed any electronic interference with my hearing aid since maybe 2000 or earlier and I was wondering if engineers had solved the problem.

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@ltecato

I was just about to post a comment that I have not noticed any electronic interference with my hearing aid since maybe 2000 or earlier and I was wondering if engineers had solved the problem.

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@ltecato It's possible. A hearing aid with a telecoil may not be able to tell the difference between desired and unwanted electromagnetic (EM) waves since its designed to use this type of signal. I have to imagine that there is filtering of any EM outside of the audio frequency range though. Products have to pass EM testing when they're designed. Depending on the product, the amount of allowable EM may be different. Filters are used to limit the amount of EM emitted. It's rare that the filter components go bad, but it is possible. I have telecoils in my aids and if I have them enabled, I pick up interference from the security devices that are used in stores and libraries. It doesn't cause issues for me since it only happens within inches of the security devices. I sometimes hear the buzz from the power company wires when I'm in my car.
Tony in Michigan

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