①IIC
Extremely deep in-ear hearing aids
Advantages:
(1) Invisible appearance
(2) Invisible hearing aids are located deep in the ear canal, which can reduce the ear blocking effect. Because the sound outlet of IIC is closer to the eardrum, when selecting hearing aid parameters, the gain can be reduced by 3dB based on CIC.
(3) The auricle can gain mid- and high-frequency sounds and attenuate low-frequency sounds. Invisible hearing aids have an auricle effect. The sound quality is more natural.
(4) The auricle has the function of reflecting and refracting sound waves. When sound enters the ear canal, the sound pressure increases between 4000 and 5000 Hz, and there is a resonance of 6 to 8dB. This means that the sound in this range has been amplified before entering the microphone. Invisible hearing aids are located deep in the ear canal and do not affect the resonance function of the concha cavity.
Therefore, invisible hearing aids have a better compensation effect on high frequencies and can enhance the hearing aid effect in the high-frequency sound segment.
(5) Low wind noise
Disadvantages:
(1) Small size, unable to install dual microphone function, the sound quality clarity in noisy environment is not as good as hearing aids with dual microphones.
(2) Expensive and difficult to operate.
(3) Low power, may not provide adequate sound compensation. Short battery life.
(4) If otitis media recurs frequently, it is easy to discharge water and pus, so it is not suitable to wear. Some elderly people also feel that wearing it too deep, uncomfortable, and stuffy ears.
②CIC
Deep ear canal hearing aid
Advantages:
(1) Has a more natural listening effect
(2) The sound loudness can be naturally improved
Disadvantages:
(1) Difficult to operate, because the device is relatively small, it is troublesome to replace the battery, etc.
(2) It is more likely to cause whistling
(3) Because it is in the ear canal, it is more susceptible to moisture and will have a higher repair rate
(4) The receiver is easily blocked by earwax. It is not suitable for people with otitis media and ear blocking effect.
③ITC
In-ear hearing aid
Advantages:
(1) Clear sound quality. Install two microphones to provide clear sound quality in noisy environments
(2) Comfortable to wear, does not affect the wearing of glasses and masks
(3) Reduce feedback and howling
Disadvantages:
(1) High repair cost
(2) Susceptible to moisture and earwax accumulation
(3) Fewer functions than large models
④ITE
In-the-ear hearing aids
Advantages:
(1) Easy to operate and convenient to control
(2) Longer working time
(3) Can have Bluetooth, volume control and other functions
Disadvantages:
(1) There may be a blocking effect on the ears
(2) High repair cost
⑤RIC
Receiver-in-the-ear hearing aids
Advantages:
(1) Smaller external auditory canal resonance effect, smoother mid-frequency response, higher high-frequency gain and output, more realistic and clear sound
(2) There will be no condensation in the sound tube of the BTE in winter causing the sound to be inaudible
(3) Receiver Outside the main body, reducing the ear blocking effect
(4) The receiver of RIC is outside. If the hearing is reduced later, only a higher power receiver needs to be replaced without disassembling the machine, saving the cost of replacement
(5) The distance between the receiver and the microphone is extended, and the probability of howling after wearing is reduced
Disadvantages:
(1) The receiver is in the ear and is easily affected by earwax and sweat
(2) The microphone is above and easily affected by moisture
(3) It is more susceptible to wind
(4) The cost of replacing the receiver line is high
⑥BTE
Behind-the-ear hearing aids
Advantages:
(1) Wide range of applications: Behind-the-ear hearing aids are suitable for various degrees of hearing loss
(2) Diverse functions: Because behind-the-ear hearing aids are larger in size, they can be built with more complex functions, increasing the practicality and functionality of the hearing aids; extending the working time
(4) Easy to adjust
(5) Closed BTEs because they seal the ear canal, minimizing the whistling noise that hearing aid wearers sometimes experience; open hearing aid tubes avoid the "clogged" feeling of in-ear hearing aids
Disadvantages:
(1) Easily eroded by sweat, rain, etc.
(2) More sensitive to wind
TWS self-fitting over-the-counter hearing aids combine the above, using a regular Bluetooth headset model, and look like an earplug. The distance between the receiver and the microphone is extended, and it also has an infrared sensing function, with almost no whistling. It has a variety of functions, but is simple to operate. The FDA-certified self-fitting function, combined with automatic program settings, provides you with accurate hearing test results while equipping you with audio that matches your own hearing loss, protecting your remaining hearing and enhancing your listening experience.
At the same time, it is sold together with wireless TV headphones to solve your hearing problems.