May 18, 2009

Hearing Aids Shopping Tips

by Jason Hew

Hearing problems are generally classified as conductive or "sensorineural". It is conductive when there is problem of sound transmission to the outer or middle ear. Hearing aids with analog technology amplify sound and can readily solve conductive hearing loss problems. But with sensorineural loss, you get something about sound processing problem, caused by cochlear or auditory nerve impairment. This problem calls for the use of digital hearing aids, which employ digital technology.

Analog hearing aids make use of the process of amplification by making sound waves larger. They come as either conventional or programmable types. Conventional instruments consist of circuitry that allows for a simple volume control in adjusting how loud sound is received. Programmable instruments, on the other hand, have circuitry that can be programmed to suit the level of your hearing loss or desired volume.

Digital hearing aids have digital circuitry and provide crisp and clear sound. They are programmed based on your unique hearing loss. Its circuitry performs millions of complex calculations in a snap to enable digital processing of sound, canceling noise, feedback and distortion. It converts gathered sound into digital format, then processes it with digital technology and outputs it into your ear as analog sound. These instruments allow for greater flexibility and customization for patients' different needs.

Hearing aids come in all shapes and sizes. They can be generally classified as BTE (Behind the Ear), ITE (In the Ear), ITC (In the Canal), and CIC (Completely in the Canal). BTE's are made of custom-made ear molds that house the circuitry for amplification or processing of sound. They are mostly recommended for children for their durability.

ITE's are also custom made devices that fit inside the outer ear. They can help on a much broader coverage when it comes to hearing loss, from mild to severe. ITC's are much smaller and go further back into bottom half of the external ear. They are almost unnoticeable once worn, and are used for mild to moderate hearing loss issues.

CIC's, being the smallest of all hearing aids can appear to be unnoticeable and makes patients look like they are not wearing them at all. They only cater to select individuals with ear canals large enough for the instrument to be inserted and are not recommended for severe hearing problems.

Looking for the perfect match could prove to be a daunting task with so many resources on hearing aids. Product marketing and hyped-up ads even make it worse for first time buyers and they can get easily get lost in an information jungle. It is important to consider that since every patient will have different hearing loss issues, they will also need a customized instrument based on their individual needs.

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.

Visiting a doctor, an audiologist, or a hearing instrument specialist can help you in choosing from a wide range of hearing aids that's right for you. You can find hearing tests and evaluation centers near your place or even online that will pinpoint what your needs are. Only then will you be able to make your decision from the wide variety of analog and digital hearing aids.

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