Hearing aid technology has come a long way over the past years and thanks to modern technology, current hearing aid devices can do a number of advanced functions. Most modern hearing aid devices are digital and they can be programmed with much ease to suit an individual’s needs better than hearing aids of past years.
Despite all these changes hearing aids are made of four parts at their core. These are the microphone, receiver, processor and a power source. These have advanced with technology becoming a powerful tool for aiding hearing for those who suffer from hearing loss. The processor holds much of the technology and functionality of a hearing aid.
Hearing aid technology is divided into two broad categories, basic and advanced technology. The basic devices have a less powerful processor which limits their customizable abilities and additional features. They are however, able to a low a suitable range of functions and hearing assistance to enable one comfortably perceive sound. Here are a number of the basic hearing aid technologies:
Channels
Channels refer to the number of sections a hearing aid has to process different parts of an incoming sound signal. The more the channels the easier it is to program and customize the aid to different frequencies and individual’s needs.
Digital noise reduction
This is a great feature which recognizes and filters out unwanted noise like environmental and background noise. The feature checks if any incoming sound signal sound contains unwanted noise and reduces the noise level making it less annoying and comfortable for the user to listen to sound signals even with background sounds.
Directional microphone systems
These are used to further prevent the interference of background noise. They amplify the sound signals coming from the front of the user while reducing those from other directions. This feature allows you to have better speech understanding regardless of background noise and provide better satisfaction in use of hearing aids.
Telecoil
This is an early hearing aid feature still available in basic technology hearing aids. It picks electromagnetic signals from compatible telephones and looped rooms. It increases the signal to noise ratio while eliminating the feedback. The signal gets to the processor bypassing the microphone. It is useful to the wearer in places of worship, theatres, tours and concerts.
FM compatibility
This is a wireless feature that allows the hearing aids to connect with FM systems and improve signals to noise ratio without causing feedback loop. It’s very helpful for leaners in a class who have to listen to the teacher.
Bluetooth compatibility
This is an advanced hearing aid technology that allows the aids to connect to other Bluetooth devices like phones and others that use Bluetooth. Like telecoil and FM compatibility, a signal can be increased to noise ratio without feedback and unlike FM compatibility it is not susceptible to interference.
Wind noise reduction
This is another advanced technology that allows users of the aid to experience active outdoor lives without wind affecting their speech perception. It detects wind approaching the microphone and avoids or reduces the wind amplification.
Other advanced hearing technologies include data logging, binaural processing and learning features.
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