Hearing Aid Technology-A Lesson about How Hearing Aids Work

Today’s hearing aids are smaller and stronger than ever before.  Scientists continue to work on hearing aid technology by using computers to design even better models with greater sound quality and less background interference.  Researchers are studying the small fly because it has a very keen sense of hearing that provides it with the skill to determine the exact location of a sound. 

Scientists are designing new directional microphones to model the fly’s ears.  This new directional microphone will equip users with the same skills as the fly by amplifying the sounds in the front of the person and lowering the sounds coming from other directions.  This technology is helping individuals to be able to concentrate on their conversations when they are in a noisy room.

For news users, there can be a lot of confusion around hearing aid technology and terminology.  Hearing aids are like tiny computers that reside either behind your ear or actually in your ear.  Feedback is a common term that is often used when discussing hearing aid types. 

Feedback is caused by interference when the amplified sound runs into other electronic signals, such as cell phones and other equipment, as it is attempting to transmit the sound to the user.  Feedback usually sounds like a loud humming or buzzing sound.  Newer hearing aid models have feedback detectors that can get rid of the feedback.

All hearing aids are equipped with a minimum of one microphone.  The microphone is used to identify the sound.  Many of the newer types are using a hearing aid technology that uses two different microphones.  One microphone is used to identify sounds from everywhere in the room and other microphone, a directional microphone, is used to pick up the sound of the person or object directly in front of you.  Listening programs are used adjust the hearing aid to provide optimum benefits in many different settings. 

The most common listening programs areNormal, TV and Noisy.  The Normal program is used in day to day situations with minimal distractions.  The TV program is used to be able to clearly hear the distinct television sounds.  And, the Noisy program uses the directional microphone to focus on a conversation in a noisy environment. 

These are three most common programs, but there are many others that are effective in a wide range of environments.  It is easier to change the settings on larger hearing aids because of their size.  Some of the smaller hearing aids require a remote control to make adjustments.

Hearing aid technology continues to improve the volume features of hearing aids.  New models have volume controls with multiple adjustments options for each microphone making conversations easier to hear and understand.