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Types of Technology
There have been tremendous advances in hearing aid technology in the last five years. Today’s hearing aids can be programmed precisely for your hearing loss, are comfortable to wear and offer excellent sound quality. The different types of circuitry available include:
- Conventional circuits
These were the most common choice in the past. They have analog signal processing and are adjusted manually with a fine screwdriver. The ability to adjust the aids to fit a particular hearing loss is quite limited. A volume control is typically the only option available.
- Digitally Programmable circuits
These aids have analog signal processing but can be digitally programmed with a computer. The aids can be adjusted with a much greater degree of control than conventional aids. Automatic volume control, multiple hearing programs and directional microphones are sometimes available.
- Digital Technology
Advances in small microprocessors have enabled manufacturers to introduce digital technology into most modern hearing aids. These aids are also programmed by the audiologist via a computer. They convert the incoming signal into a binary code at high speed and with great precision. Complex calculations are performed to adjust the sound for the user’s hearing loss and to convert the signal back to audible sound. Features available include: multiple memories, automatic program selection, adaptive directional microphones, noise cancellers, low battery warning signals and remote controls. Digital hearing aids are now available in most price ranges.
Directional Microphones
Hearing in the presence of noise can be one of the most difficult things for hearing aid users. When you are in a noisy situation such as a restaurant or shopping mall it can be very difficult to pick out the voice you want to listen to from all the other voices and background noise. Directional microphones can give you a clear advantage in these situations. In the directional program, a hearing aid will reduce the noise coming from the back and sides and focus on what is directly in front of you. With the push of a button on the hearing aid, you can switch between listening programs designed for noise and for quiet. Directional microphones are available on full shell, half shell and behind-the-ear style aids.
Are Two Aids Better Than One?
Being able to hear with two ears is as important as seeing with two eyes. Benefits of wearing two aids include:
- Your ability to localize sounds will be improved.
- You will have an easier time hearing in noisy environments.
- You will be able to understand conversation whether it comes from the right or left.
- The sound quality will seem fuller and more natural.
There are, however, some situations where one hearing aid is recommended, such as when one ear is too poor to benefit from amplification. We can evaluate what will be best for you personally.
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