S.ANGEN FRANKLIN
Final Year ELECTRONICS AND
COMMUNICATION ENGINEERING
KPR INSTITUTE OF ENGINEERING AND
TECHNOLOGY
ARASUR,COIMBATORE-641 407
Email:anzen@live.in-Cell:9043436640.
Abstract-In
this interface of an NEURAL audio transmission to an human brain,that transfer
audio signal to an human brain with the help of neuran that present in all over
the body.This communication is one direction.The electronic circuit that help
to interface with neurons,and neurons that help to interface with brain.It is
simply an audio transmission to brain. This technique of audio transmission is
used for hearing aid. Hearing aids are primarily
useful in improving the hearing and speech comprehension of people who have
hearing loss that results from damage to the small sensory cells in the inner
ear, called hair cells. This type of hearing loss is called sensorineural
hearing loss. The damage can occur as a result of disease, aging, or injury
from noise or certain medicines.
A
hearing aid magnifies sound vibrations entering the ear. Surviving hair cells
detect the larger vibrations and convert them into neural signals that are
passed along to the brain. The greater the damage to a person’s hair cells, the
more severe the hearing loss, and the greater the hearing aid amplification
needed to make up the difference.
For
an human the audio that will been received by the help of ears
That the sound is generated by an any source and
that sound is transfering by an medium of air ,the sound waves is like an
analog puls signal
These pulse signal that has an information the
signal that had an wave as
Introduction:
The Hearing aid,which
explaining about audio hearing,for an normal people the hearing is done by an
ears. But For the physicaly challenged people Hearing is an big matter when
even had an loud speaker on his closed ears
In-the-ear (ITE) hearing aids fit completely inside the outer ear
and are used for mild to severe hearing loss. The case holding the electronic components
is made of hard plastic. Some ITE aids may have certain added features
installed, such as a telecoil. A telecoil is a small magnetic coil that allows
users to receive sound through the circuitry of the hearing aid, rather than
through its microphone. This makes it easier to hear conversations over the
telephone. A telecoil also helps people hear in public facilities that have
installed special sound systems, called induction loop systems. Induction loop
systems can be found in many churches, schools, airports, and auditoriums. ITE
aids usually are not worn by young children because the casings need to be
replaced often as the ear grows.
Explanation:
Canal aids fit into the ear canal and are available in two
styles. The in-the-canal (ITC) hearing aid is made to fit the size and shape of
a person’s ear canal. A completely-in-canal (CIC) hearing aid is nearly hidden
in the ear canal. Both types are used for mild to moderately severe hearing
loss.
Because
they are small, canal aids may be difficult for a person to adjust and remove.
In addition, canal aids have less space
available
for batteries and additional devices, such as a telecoil.
not recommended for young children or for people with severe to profound
hearing loss because their reduced size limits their power and volume.
he hearing aid that will work best for you
depends on the kind and severity of your hearing loss. If you have a hearing
loss in both of your ears, two hearing aids are generally
recommended because two aids provide a more natural signal to the brain.
Hearing in both ears also will help you understand speech and locate where the
sound is coming from.
You
and your audiologist should select a hearing aid that best suits your needs and
lifestyle. Price is also a key consideration because hearing aids range from
hundreds to several thousand dollars. Similar to other equipment purchases,
style and features affect cost. However, don’t use price alone to determine the
best hearing aid for you. Just because one hearing aid is more expensive than
another does not necessarily mean that it will better suit your needs.
A
hearing aid will not restore your normal hearing. With practice, however, a
hearing aid will increase your awareness of sounds and their sources. You will
want to wear your hearing aid regularly, so select one that is convenient and
easy for you to use.
Although they work differently than the hearing aids
described above, implantable hearing aids are designed to help increase the
transmission of sound vibrations entering the inner ear. A middle ear implant
(MEI) is a small device attached to one of the bones of the middle ear. Rather
than amplifying the sound traveling to the eardrum, an MEI moves these bones
directly. Both techniques have the net result of strengthening sound vibrations
entering the inner ear so that they can be detected by individuals with
sensorineural hearing loss.
A bone-anchored hearing aid (BAHA) is a small device that
attaches to the bone behind the ear. The device transmits sound vibrations
directly to the inner ear through the skull, bypassing the middle ear. BAHAs
are generally used by individuals with middle ear problems or deafness in one
ear. Because surgery is required to implant either of these devices, many
hearing specialists feel that the benefits may not outweigh the risks.
Another promising
research focus is to use lessons learned from animal models to design better
microphones for hearing aids. NIDCD-supported scientists are studying the tiny
flyOrmia ochracea because its ear structure allows the
fly to determine the source of a sound easily. Scientists are using the fly’s
ear structure as a model for designing miniature
directional microphones for hearing aids. These microphones amplify the sound
coming from a particular direction (usually the direction a person is facing),
but not the sounds that arrive from other directions.
Directional microphones hold great promise
for making it easier for people to hear a single conversation, even when
surrounded by other noises and voices.
THANK YOU
No comments:
Post a Comment