If the hearing aid is found to protrude outward with pronunciation,
Elephant,
It is necessary to polish the hearing aid housing,
To reduce its relationship with the external auditory canal.
Shape matching to reduce ear blocking effect.
3. Solutions to ear blockage effect
Ear blocking effect varies from person to person. If the ear plugging effect occurs, it should be
Click on the solution.
a.
First check the ear canal part of the hearing aid or ear mold. A poorly made assistant
auditory organs
(ear mold)
The ear canal portion may be virtual,
This will lead to hearing AIDS
(ear mold)
To one side of the ear canal wall.
This situation may also be caused by the concha cavity effect.
Ear cavity
This effect means that there is an angle between the ear canal part of the hearing aid and the bottom of the concha cavity,
Close tightly
At this time, the ear canal needs to polish the hearing aid surface to reduce its tightness with the external auditory canal.
Reduce the ear blocking effect.
b.
Increase the diameter of the exhaust hole. The inner diameter of the ventilation hole is increased and the length is shortened.
can
So that the low-frequency cutoff frequency moves up and the low-frequency attenuation degree increases. Reduce the ear blocking effect.
The use of open hearing AIDS has better wearing comfort than traditional hearing AIDS.
c.
Extend the ear canal part of the hearing aid. According to the acoustic principle, hearing AIDS and
The smaller the closed cavity formed by the external auditory canal, the smaller the ear blocking effect.
d.
use
MCT (minimum
get in touch with
Technology, minimum connection
Touch technology)
. Make the in-ear hearing aid (ITE) as small as possible to help hearing.
The device can be deeper into the ear canal,
Close contact with the bones of the ear canal,
The rest is related to the external ear.
The roads remain in loose contact,
In order to maintain the maximum openness of the external auditory canal,
So as to soften it.
The acoustic energy of bone vibration can be radiated through the external auditory canal.
e.
A few patients are extremely sensitive to ear plugging effect. For such patients,
We can only persuade them to adapt slowly.
4. Osta's efforts to solve the ear blockage effect
In order to effectively solve the negative influence of earplug effect on patients wearing hearing AIDS
Ring,
Oushida company constantly puts forward higher requirements for itself.
Trying to find the ear blocking effect
Solution.
Now, OSTAR Company puts forward the concept of open ear fitting, and puts forward that ears should be independent.
Shout out loud slogans by breathing. The latest product "Lingxiu" has super acoustic feedback function.
It ensures the perfect interpretation of open-ear comfortable listening technology.
Leading the trend, all three series are embraced.
There are open-ear products and behind-the-ear products also adopt ear canal microphone technology.
let
The patient's hearing is more comfortable and natural.
Ear blocking effect refers to the decrease of bone conduction hearing threshold caused by the closure of external auditory canal.
Phenomenon. This effect will show the threshold change of pure tone low frequency bone conduction in pure tone audiometry.
OK,
When wearing a hearing aid, it is easy to cause the wearer's ears to feel swollen.
Your own voice
The sound cavity is uncomfortable or loud.
How low-frequency energy is transmitted to the ear canal through bone conduction?
Reduced in number or distributed outside the ear canal,
This is a big lesson of hearing aid technology.
Title.
1. What is the ear blocking effect?
The ear blocking effect is related to the bone conduction mechanism of sound and the sound of skull itself.
Scientific characteristics are closely related. Under normal circumstances, the voice in the human body (such as voice,
chew
The sound of jaw vibration when chewing and vibration caused by movement on hard roads)
Can be directly transmitted to the outside of the cochlea through the vibration of the skull,
Or through the ossicular chain, etc.
The middle ear structure and the tympanum of the temporal bone are introduced into the external ear, which causes the vibration of the cartilage of the external auditory canal.
straight
Usually, because this part of acoustic energy is dispersed,
So this part of the sound won't
Will be detected by us. When wearing a hearing aid (usually custom machine or wearing ears)
Mode)
Because the hearing aid goes deep into the external auditory canal and closes it, a cross section is formed.
Sealed cavity.
The acoustic energy introduced into the external auditory canal by the skull and ossicular chain is abnormal.
When it propagates outward, it will generate additional sound pressure in the external auditory canal, and through the air conduction mechanism,
this
Part of the sound pressure will be transmitted to the inner ear.
Because the vibration of external auditory canal cartilage is mainly limited to
250HZ-500HZ, so the hearing threshold of this frequency will be lowered. because
Commander-in-chief
compare
ITE
It goes deep into the bone, so the effect of ear plugging is minimal.
2. Common problems caused by ear plugging effect and their principles.
Hearing aid users, especially those with good low-frequency hearing, often report ear problems.
Inflating, stuffy, loud and so on. When the ear blocking effect occurs, people will feel it.
I feel like I'm talking in a wooden bucket, and I feel like my voice is jar voice or empty.
In order to solve the problem of ear blocking effect when wearing hearing AIDS, they are most commonly used at present.
The method is to use ear canal receiver technology to add vent holes or hearing AIDS.
After adding pores,
The low-frequency acoustic energy in the originally closed ear canal will partially leak,
can
Effectively reduce the discomfort caused by ear blocking effect. On the premise of not causing howling,
through
The larger the stomatal opening, the better.
In addition, it should be noted that the ear blocking effect is in the ear canal with different shapes.
The difference will be great.
The angle between the first bend and the second bend of the ear canal may be relatively flat.
Straight, or maybe pointed. As can be seen from some ear impressions, the first curved part of the ear canal
Relatively long or inclined,
Ear molds and in-ear hearing AIDS with these special shapes will
Completely close the ear canal and form a closed mechanical system with the vibrating external auditory canal wall.
This will increase the ear blocking effect,
Because the hearing aid itself vibrates with sound waves,
Quite greatly
On the diaphragm, the sound is transmitted directly to the eardrum. If the ear canal is relatively straight,
this
There will be fewer class phenomena.
If the hearing aid is found to protrude outward with pronunciation,
Elephant,
It is necessary to polish the hearing aid housing,
To reduce its relationship with the external auditory canal.
Shape matching to reduce ear blocking effect.
3. Solutions to ear blockage effect
Ear blocking effect varies from person to person. If the ear plugging effect occurs, it should be
Click on the solution.
a.
First check the ear canal part of the hearing aid or ear mold. A poorly made assistant
auditory organs
(ear mold)
The ear canal portion may be virtual,
This will lead to hearing AIDS
(ear mold)
To one side of the ear canal wall.
This situation may also be caused by the concha cavity effect.
Ear cavity
This effect means that there is an angle between the ear canal part of the hearing aid and the bottom of the concha cavity,
Close tightly
At this time, the ear canal needs to polish the hearing aid surface to reduce its tightness with the external auditory canal.
Reduce the ear blocking effect.
b.
Increase the diameter of the exhaust hole. The inner diameter of the ventilation hole is increased and the length is shortened.
can
So that the low-frequency cutoff frequency moves up and the low-frequency attenuation degree increases. Reduce the ear blocking effect.
The use of open hearing AIDS has better wearing comfort than traditional hearing AIDS.
c.
Extend the ear canal part of the hearing aid. According to the acoustic principle, hearing AIDS and
The smaller the closed cavity formed by the external auditory canal, the smaller the ear blocking effect.
d.
use
MCT (minimum
get in touch with
Technology, minimum connection
Touch technology)
. Make the in-ear hearing aid (ITE) as small as possible to help hearing.
The device can be deeper into the ear canal,
Close contact with the bones of the ear canal,
The rest is related to the external ear.
The roads remain in loose contact,
In order to maintain the maximum openness of the external auditory canal,
So as to soften it.
The acoustic energy of bone vibration can be radiated through the external auditory canal.
e.
A few patients are extremely sensitive to ear plugging effect. For such patients,
We can only persuade them to adapt slowly.
4. Osta's efforts to solve the ear blockage effect
In order to effectively solve the negative influence of earplug effect on patients wearing hearing AIDS
Ring,
Oushida company constantly puts forward higher requirements for itself.
Trying to find the ear blocking effect
Solution.
Now, OSTAR Company has put forward the concept of open ear matching, and put forward that ears should be independent.
Shout out loud slogans by breathing. The latest product "Lingxiu" has super acoustic feedback function.
It ensures the perfect interpretation of open-ear comfortable listening technology.
Leading the trend, all three series are embraced.
There are open-ear products and behind-the-ear products also adopt ear canal microphone technology.
let
The patient's hearing is more comfortable and natural.