
There are two types of open ear hearing aids, acoustic thin tube open fit and speaker-in the ear (SIE) hearing aids. The acoustic thin tube hearing aid incorporates all of the electronic components in the plastic case behind the ear. The sound then travels down the acoustic thin tube into the ear canal. The SIE hearing aid moves the speaker from the plastic case down into the sound tip of the acoustic thin tube, thus requiring less gain at the ear level to produce the same output in the canal. SIE hearing aids are appropriate for both a sloping high frequency hearing loss as well as a wide range hearing loss. Also, because the sound does not have to travel down a thin tube, the quality of the signal is improved.
Open Ear Hearing Aids: Pros and Cons
The biggest benefit to open fit digital hearing aids is that they minimize occlusion. Open ear hearing aids are ideal for those who have normal low frequency hearing but who are experiencing problems with high frequencies - which usually occurs with early hearing loss. They are also easier to fit because they are not custom made, unlike many in the ear hearing aids. Although they utilize the latest technology, open ear hearing aids should not cost much more than standard hearing aids and may even cost the same.
Because of their size, open fit hearing aids use smaller batteries and will have a shorter battery life than other devices