Suddenly, the headphones could only hear the backing vocals, which were very small, tiny

Typical incompatibility, you have to press and hold the key in the middle of the wire remote to make a sound.

Long-term plugging and pulling will disconnect the root of the plug, resulting in no loop, so only ** or very small human voice will be heard. If you try to plug all of your headphones into the jack of your phone with other good headphones, you'll hear ** and the human voice is very small. This experiment proves that poor contact can cause this, which is very similar to root thread breakage.

You need to adjust the left and right channels of your device.

The headphones can only hear the accompaniment, and the original singing sound is very small

1.You need to open your computer's control panel first.

2.Then find the sound and tap again.

3.Double-click the speaker.

4.Click on the second one, Level Settings.

5.Tap the first balance and pull the left front down to the lowest and the right front pull down the highest, and that's it.

This is caused by the fact that the ground and microphone lines of the earphone line are reversed. So the phone is recognized by this key switch.

1.The solution is to just pull out the earphone plug some, don't plug it in completely, and adjust the plug, if not, you can only go to the repair shop to change the ground wire and microphone line position.

It is a headphone interface standard with MIC, commonly known as the national standard, which is used by the state. The pins are connected (from the beginning): Left Channel-Right Channel-Microphone-Ground.

3.There is also a headphone jack with MIC is an international standard, called CTIA, and the pin connection method is: left channel-right channel-ground-microphone.

This headset is definitely not suitable for your mobile phone, buy a special headset that suits your brand of mobile phone, mobile phone headphone interface standard development.

What are the international standards for mobile phone headphone interfaces?

Because the bottom line of the headphone plug is reversed from the microphone wire, which is generally used by the American standard headphone plug, press and hold the microphone button, and the human voice will be normal.

You can also buy a headphone plug conversion cable from American standard to national standard, which is copper-plated, which can improve the detail expressiveness of some headphones.

Solution. The plug of the headset can be replaced, if you need to replace it yourself, you need a certain basic knowledge of electronics, hands-on ability, and necessary tools and materials (soldering iron, solder wire, etc.), or ask a repair shop to help.

In general, there are several possible scenarios.

First, the headset is not compatible with the mobile phone, buy a headphone converter can be compatible, but now this situation is rare, the previous radio headset often can not be used as a mobile phone ear machine.

Second, the earphones have been broken, because it is likely that the metal core inside is broken or the contact is poor. Generally, the quality of the earphones will be shortened because of artificiality, such as often sleeping with the earphones, pressing or pulling the earphones, at this time, you can carefully check whether the various positions of the earphones have been damaged, or try to move the position of the earphone cable to see if the situation has improved.

It is because the grounding wire of the earphone cable and the microphone circuit are opposite, so it leads to this situation for a long time, which can make the plug break and cause no loop, so you can only hear ** or the voice of the person is very small. You can use other good headphones and try not to plug them all into your phone, you will hear**, very little sound. Experiments have shown that adverse exposure can cause this, which is very similar to root breakage.

So the phone can be identified by this button switch.

The solution is to simply unplug some headphones, not fully plugged in, and adjust the plug. If not, you can only go to a repair shop to change the ground and microphone cable positions. Now that you know why, you can set the volume of the left and right volumes of the volume and only allow one of the channels to have one sound output.

Although the sound is small, it is better than nothing. This method did not solve the problem, and there was no stereo sound system since then.

1. First turn on your computer and find the control panel.

2. Then find the sound and click it.

<>4. Click the second one in the speaker page, Level Setting.

5. Click on the first balance.

6. Pull the left front down to the lowest, and the right front pull down the highest, so as to solve the problem that the vocals are very small and empty, and the accompaniment sound is very large.