1, the outside of the earplug may be metal or the poor quality of the earphone will lead to leakage of the electromagnet, so it is best to change a pair of earphones.
2. If the earphone circuit is well insulated, it will not form a discharge circuit with the human ear.
3, or use insulation equipment such as plastic instead of earplugs.
Sometimes when the weather is cold, the earphone will be charged with static electricity, which is caused by friction. Just rub it with your hand and touch it before putting on the earphone.
Extended data:
Precautions:
1. Is it necessary to "cook" the in-ear headphones?
Generally speaking, the moving iron headphones have not improved much after being boiled in water. Some dynamic headphones will improve their sound quality after a period of time. If you want to know more information, please search in Baidu. Some suggestions: If you really want to boil the in-ear headphones, playing music at normal volume for two days (about 50 hours) is enough for most in-ear headphones-this is my personal experience with many in-ear headphones.
2. Do in-ear headphones need a power amplifier?
Some in-ear headphones really need a power amplifier to play a bright spot, while some in-ear headphones with low sensitivity, such as er4 with beautiful sound, usually need a power amplifier to play their full strength. However, most in-ear headphones on the market can exert their full potential without any amplifier, even if the amplifier sometimes slightly improves their sound quality.
The easiest way to know whether in-ear headphones need to be amplified is to read the instructions. Generally speaking, in-ear headphones with impedance below 50 ohms and sensitivity above 98 decibels absolutely do not need an amplifier.
3. Stethoscope effect and bone conduction
For new users of in-ear headphones, there are two most criticized problems: "stethoscope effect" (also known as "line noise") and "bone conduction phenomenon". The stethoscope effect means that users of in-ear headphones can hear the noise transmitted into the headphones (caused by wires rubbing clothes or other things). "?
"Bone conduction phenomenon" refers to the noise (caused by eating, walking and other sports behaviors) caused by sound entering the ear canal of the user from the inside of the user. Both of these phenomena are side effects of ear canal closure, and this closed and quiet listening environment intensifies this noise.
The "stethoscope effect" can be avoided by wearing it on the ear or using a clothes peg. Some companies also specially provide wires to better reduce the "stethoscope effect". "Bone conduction phenomenon" can limit its influence by not eating when listening to music and walking lightly (changing soft-soled shoes). Finally, most users will get used to these two questions and eventually forget them.
4. Noise floor
Sometimes users of in-ear headphones will hear the background noise of current when the volume is very low, which sounds like a hissing sound. Most in-ear headphones are very sensitive and can easily monitor the background noise of current, while large headphones will ignore these details.
There are few practical measures to solve this problem, and sometimes adding a resistance wire seems to have some effects (it will increase the impedance of headphones and reduce sensitivity). At the same time, some devices (such as the micro hard disk used in the IPOD) are generally considered to generate more background noise.
Sometimes in-ear headphones will raise the frequency band from 1 kHz to 10 kHz, which is the so-called "tooth sound" and "burr". The problem is that this kind of in-ear headphones will produce very sharp high notes, which will usually be very exciting and uncomfortable after listening for a long time, especially the performance of female voices.
Because everyone can hear different frequencies, the high frequency of these burrs is very suitable for some people. The translator himself can't understand 4B. The so-called transparency is really sharp and creepy to me.
At the same time, I also like to improve the high-frequency power amplifier. Actually, there is no real solution to this problem. Adjusting EQ may be one of the most effective methods, or changing headphones (mainly catheters and filters).
5. Ears and Health
People often mistakenly believe that in-ear headphones will lead to hearing loss and ear diseases. However, the fact is that in-ear headphones are very safe as long as they are used properly.
The first point: you need to know that no matter what kind of headphones (or speakers) you use, listening to music at high volume for a long time will damage your hearing. The advantage of using in-ear headphones is that you can turn the volume down very low, because you don't need to raise the volume to offset the background noise.
This low volume means that using in-ear headphones in noisy environment will be safer than using headphones and non-in-ear earplugs. Don't think that in-ear headphones close to the eardrum are easy to hurt your hearing. Because in-ear headphones are used at low volume, they are at least as safe as ordinary headphones at the same volume. (Scientific basis: 1, 2)
The second point: When a foreign body is inserted into the ear canal, your ear will produce more earwax. This is the way for the human body to protect itself from foreign objects and prevent bacteria from multiplying when the ear canal is wet and closed. Therefore, when using in-ear headphones, it is best to take them off from time to time to let the air circulate and let the ear canal relax (you can also let your middle/deep ear canal have a short rest under the continuous bombing of sound). ?
Regular cleaning of earwax is also recommended. However, before you do it yourself, please ask your doctor how to clean the earwax safely. When wax accidentally enters the internal auditory canal, it will cause blockage and even infection (if the wax condenses and hurts the eardrum). Once you find an ear infection, please stop using any headphones and seek medical attention immediately.
In addition, it should be noted that human beings themselves cannot adapt to the long-term noise environment, even if the sound pressure is lower. A recent survey by the World Health Organization shows that low noise will not lead to hearing loss, but it will still have adverse effects on the body. People who live in noisy environment for a long time are more likely to suffer from serious diseases physically and psychologically.
Although I didn't study hard, my advice is that you should think it over before you prepare to listen to music for a long time, even if you turn down the volume. It is true that we all love music, but it doesn't mean that we have to listen to music all the time.
In short, please listen at a lower volume when necessary, and keep the ear canal and in-ear headphones clean to avoid listening for too long. Remember: the process of hearing loss is irreversible (once hearing is damaged, it is difficult to recover), so please use these common sense to take care of yourself.
In-ear headphones-Baidu Encyclopedia