Hearing Aids: Finding a Perfect Match
Hearing loss is generally categorized as conductive and “sensorineural”. Conductive hearing loss refers to abnormal transmission of sound to the outer or middle ear. This can be easily fixed by hearing aids that use analog technology through amplification of sound. Sensorineural hearing loss is caused by cochlear or auditory nerve malfunction. Since this is more of a sound processing problem, this requires some digital technology, and this is where digital hearing aids can help.
Hearing aids that use analog technology amplifies sound by means of magnification of sound waves. The products in the market generally have them as conventional or programmable models. Conventional models feature adjustable volume control in its circuits, while programmable models allow for more flexibility. While they both have adjustable controls, the latter has more fine-tuning capabilities in terms of sound amplification.
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Digital hearing aids use digital technology and process sound for optimum clarity and quality. Each model is tailored on an individual’s hearing problems. It features excellent reduction or cancellation of noise, feedback and distortion. After the instrument receives sound waves, it performs millions of instant calculations to convert sound to digital format with digital technology, then as analog sound recognized by the person.
Hearing aids vary in size and shape. But they generally come down to four basic classifications. Behind the ear or BTE models have a plastic casing that houses the electronic parts used for amplification of sound. As the name says, it is worn behind the ear and has a tube that connects to an ear mold for fitting in the ear canal. They are easy to use and commonly recommended for children.
In the ear or ITE models are tailored to fit a certain individual’s outer ear. They are recommended for patients with mild to severe hearing problems, although a bit difficult to use as compared to BTE’s due to their size. In the canal or ITC’s are smaller than ITE’s and only take up half the space of your ear. They are much less visible compared to ITE and BTE models, and are recommended for mild to moderate hearing loss.
CIC’s are the smallest type of hearing aids available in the market, and are barely visible when worn. This requires custom-fitting for individuals with ear canals large enough to accept the instrument. Despite their aesthetic appeal, they are not recommended for severe hearing loss.
It’s easy to be confused with so much information on hearing aids out there. So how do we get a custom-fit hearing instrument? The answer will always vary since different individuals have different degrees of hearing loss. A patient’s lifestyle and communication will also be factors.
In choosing a perfect fit instrument, it is important that patients undergo hearing tests and evaluation of their degree of hearing loss. This is the best way of knowing for sure, and not getting basis from someone who tells you that his aid has the best hearing features.
It is best to consult a doctor, audiologist or hearing instrument specialist before making any purchase of hearing aids. They are all qualified to help you out and give you advice about analog and digital hearing aids, and how they can make your life better.
