3. Open ear hearing aids,
also known as open-fit,
are a non specific type
of listening instrument
designed to prevent
occlusion, one of the
most noted and
annoying drawbacks to
wearing hearing aids.
4. If you hold the palms of
your hands against your
ears, you'll experience
the booming, unnatural
and ultimately
disruptive sound
quality that results
from cutting off the
natural flow of air into
your ear canal.
5. This is similar to the
occlusion many experiences
with some listening
instruments. When a
device's earbud is inserted
into your ear, it's possible to
hear echos, or a tunneling
sensation as well as poor
sound quality of your own
voice.
6. However, many styles
of hearing aids keep the
ear canal slightly open
to allow natural sound
and air stream into your
canal and avoid the
plugged up feel of
occlusion.
7. It is more than the style
of the device that
makes it an open ear
hearing aid as they also
come in ITE, or in the
ear, and other form
factors.
8. From the onset,
manufacturers design
the in-ear portions of
the device to keep part
of the ear unblocked.
This is more a function
of the shape of the
device rather than it's
electronic features.
9. Relatively new, open-fit
devices have only been
around since 2005, though
the styles superior features
are will likely have an
industry-wide effect, making
open ear hearing aids the de
facto design for listening
instruments.