Quote:
Originally Posted by MordyT
My mom wears hearing aids so,
from what I understand...
the "magnetic field" messes with the hearing aids somehow, on her home phone they had to put a small magnet to keep the aids from shutting down.
So I am guessing that field does something else then raise the volume...
P.S. her cell doesn't have this issue...
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Its actually the other way around..it turns off the hearing aid partially, so that the hearing aid can pickup only whats being said on the phone allowing the person to listen better to the other on the phone.
Here have a read..
"Telecoil
A wonderful feature available on many hearing aids is called the "telecoil". It's also referred to as a "t-switch" or "t-coil".
It's nothing more than a tiny coil of wire around a core that will induce an electric current in the coil when it's in the presence of a changing magnetic field.
A telecoil, can therefore, be an alternate or supplemental input device for a hearing aid.
Normally, a hearing aid "listens" with its microphone, then amplifies what it "hears". But with a telecoil used as the input source instead of (or in addition to) the microphone, the hearing aid can "hear" a magnetic signal which represents sound.
Originally, the telecoil was meant to "hear" the magnetic signal naturally generated in an older telephone, whose speaker was driven by powerful magnets. This allowed someone with a hearing aid to hear the telephone better, if they just turned on (or switched to) their telecoil as an input source for their hearing aid.
Now there are many more magnetic sources that can be "heard" by a telecoil equipped hearing aid.
Even though newer phones are not natural sources of a magnetic signal, most phones contain extra electronics to generate a magnetic signal and are thus "Hearing Aid Compatible" (HAC). What that means is that a hearing aid with a telecoil can "hear" the magnetic signal they put out.
In addition, because of the Americans with Disabilities Act (ADA), many public accommodations such as movie theaters, theaters, auditoriums, and sports stadiums provide Assistive Listening Systems (ALSs), which may include headsets or receivers loaned to patrons to help them hear. Many of these are HAC, so if you have a telecoil equipped hearing aid, then you can hear the magnetic signal ... many times you can hear that a lot better than you can hear an acoustic signal.
Many churches, though not required to provide ALSs, do so because they know it's good for their members.
You can also use a telecoil to hear the TV, telephones, in meetings, in noisy restaurants, or in a noisy car if you supply the magnetic signal using an Assistive Listening Device (ALD) coupled with a room loop, a neckloop or silhouettes.
One major advantage of a using a telecoil is that you can turn off your normal hearing aid microphone, and thus, not hear all the noise that might be around you. You only hear the magnetic signal, which doesn't include all that noise, so you can hear it a lot better.
Telecoils are avaiable (and not very expensive) on most BTE hearing aids and on some ITE hearing aids. A few ITC aids may also have telecoils, but normally, CIC aids do not.
Telecoils can provide that extra help you need to hear in many otherwise impossible situations. Ask your hearing health care provider about telecoils if you think they might help you. Don't always count on your provider to suggest it."