Hearing Aid Compatibility – Cell Phones – Land Lines

Many of today’s digital hearing aids are Bluetooth or wireless compatible, meaning they are able to connect wirelessly to Bluetooth enabled devices and other audio devices such as cell phones and you home landline.    Most wireless solutions require the hearing aid wearer to use a streaming device to send the signal from the cell phone directly to your hearing aids.  This allows you to use your hearing aids as a hands free headset and the signal goes to both ears which will significantly increases clarity.

New rules adopted by the Federal Communications Commission (FCC) require cell phone makers and service providers to make phones work better for people using hearing aids.  To find out if a cell phone is hearing aid compatible look for a HAC label on the phone packaging or in user manual.  Cell phones that work well with hearing aids have a microphone (M) rating of M3 or M4.  If you have a hearing aid with a telecoil, look for a phone with a telecoil (T) rating of T3 or T4.  If you are purchasing a new cell phone, try it in the store to make sure it works with your hearing aids.

Other features that make cell phones easier to use are:

  • Volume control
  • Vibrating alerts or vibrating accessory
  • Flashing screen
  • Different ringer volume and tones
  • Text messaging services
  • Speaker phone
  • Speech-to-text
  • Teletypewriter (TTY) or other assistive device connections

Do I Need Two Hearing Aids?

Basically, if you have two ears with hearing loss that could benefit from hearing aids, you need two hearing aids. It is important to realize there are no animals born with only one ear. Simply stated, you have two ears because you need two ears. If we try to amplify sound in only one ear, you cannot expect to do very well. Even the best hearing aid will sound “flat” or “dull” when worn in only one ear.

Assuming you have two ears that hear about the same, you can do a little experiment at home to better understand how important binaural (two ears)  hearing is:

First, gently close just one ear, by simply pressing the little fleshy part in the front of your ear canal (the tragus) into your ear canal — a little. Do not apply pressure, do not hurt yourself. Just close the ear canal to eliminate sound from entering the ear. The idea is to close that ear for about ten minutes while you watch TV or listen to the radio, or speak with your spouse. Then, after a full ten minutes, remove your finger. What an amazing difference!

There are many advantages associated with binaural (two ear) listening and importantly, there are problems associated with wearing only one hearing aid — if you are indeed a candidate for binaural amplification.

Localization (knowing where the sound came from) is only possible with two ears, and just about impossible with one ear. Localization is not just a sound quality issue; it may also be a safety issue. Think about how important it is to know where warning and safety sounds (sirens, screams, babies crying, etc) are coming from. Using both ears together also impacts how well you hear in noise because binaural hearing permits you to selectively attend to the desired signal, while “squelching” or paying less attention to undesired sounds such as background noise.

Binaural hearing allows a quality of “spaciousness” or “high fidelity” to sounds, which cannot occur with monaural (one ear) listening. Understanding speech clearly, particularly in challenging and noisy situations, is easier while using both ears. Additionally, using two hearing aids allows people to speak with you from either side of your head – not just your “good” side!

People cannot hear well using only one ear. There are studies in the research literature that show that children with one normal ear and one “deaf” ear are ten times more likely to repeat a grade as compared to children with two normally hearing ears. Additionally, we know that if you have two ears with hearing impairment, and you wear only one hearing aid, the unaided ear is likely to lose word recognition ability more quickly than the ear wearing the hearing aid.