W7What should I do if there is noise when the speaker is plugged in?

There are many situations that will cause noise in the computer audio, such as the speaker is interfered with, the interface or connection line is not in good contact, and the sound itself is of poor quality. Generally speaking, computer audio is mostly active speakers, and there will be amplifiers inside, so noise is inevitable, and the noise of active speakers can be roughly divided into electromagnetic interference, mechanical noise and thermal noise. Electromagnetic interference can be mainly divided into power transformer interference and stray electromagnetic wave interference.

Generally speaking, the power transformer interference is caused by the power flux leakage of the multi-speaker speaker, and the effect of installing a shielding cover for the transformer is very obvious when conditions permit, which can block the magnetic leakage to the greatest extent, and the shielding cover can only be made of iron materials. We should try to choose products with big brands and solid materials, and in addition, using external transformers is also a good solution. Stray electromagnetic interference is common, and speaker wires, crossovers, wireless devices, or computer hosts can all become sources of interference.

Keep the main speaker as far away from the computer as possible and reduce the number of peripheral wireless devices. Mechanical noise is specific to active loudspeakers. During the operation of the power transformer, the core vibration caused by the alternating magnetic field will produce a mechanical noise, which is very similar to the humming sound emitted by the ballast of a fluorescent lamp.

Choosing the best product is still the best way to prevent this noise. In addition, we can add a rubber shock absorber between the transformer and the fixing plate. It should also be noted that if the potentiometer is used for a long time, the contact between the metal brush and the diaphragm will be poor due to dust accumulation and abrasion, and noise will be generated when it rotates.

If the screws of the speaker are not tightened, and the inverter is not handled properly, mechanical noise will also be generated when the **big dynamic**. This thermal noise can be dealt with by replacing low-noise components or reducing the working load of the components, and reducing the operating temperature is also one of the most effective methods. In addition, some computer speakers, when the volume is turned up too much, there will also be noise.

This situation is caused by the fact that the output power of the power amplifier may be small, and it cannot avoid the large dynamic peak signal at the moment, or because of the overload distortion of the horn.

Is this the reason why the sound of the computer and laptop is noisy and the sound quality has deteriorated?

After installing win7,The system integrates the driver of mainstream hardware,The system will automatically install,But the driver of the integrated sound card is a general driver,So some sound cards can not work normally,It is recommended that you take a look at the model of the motherboard,Then go to search for the applicable driver to install manually,If there is no win7 version,You can try Vista,Generally, you can use。

The driver is not suitable to find the sound card driver dedicated to win7.

Next driver wizard, reinstall the driver.

If the signal line is completely unplugged, and there is still noise (referring to the current sound) when the sound is turned on, it is a problem with the power amplifier. If it is plugged into the computer and the computer is turned off, the sound of the audio is still very loud, that is the current sound of the computer discharge.

It's best to change the line and see if there's any noise

To put it simply, there is a problem with the amplifier.

There is noise in the stereo, and the main reasons are:

1. There is a problem with the buried filter circuit of the audio power supply, such as poor rectifier diode characteristics or soft breakdown;

2. The filter capacitor of the power supply part is out of capacity or fails;

The common feature of the above two is that when the volume potentiometer is tilted, the AC "hum" sound will also become louder or smaller synchronously, but there will be none, and the frequency is lower, but there will be no harsh "click" sound;

3. If in the case of a fixed volume, it will also be accompanied by a harsh "click" sound, and this sound changes randomly, and when the volume potentiometer is buried, this sound is more obvious, and it will sound once it is toggled, or it will sound for a while, then the midpoint of the volume potentiometer has a poor contact fault due to excessive toggle, and the potentiometer can be replaced.

If there is noise, it may be a problem with the speaker, or it may be a problem with the power amplifier.

First of all, you first rule out the problem that is not the source of the music in the sound source,Specifically, it is the next relatively large *** file,For example**The duration is less than 5 minutes, there are about 8 9M size songs,Or APE format file (directly from the CD to grab the track**,The quality is relatively high)

Take it to hear if there is a problem, and move on to the next step after ruling out the problem that is not the source of the sound.

If it sounds like the sound is not strong, it feels like a leather ball is leaking, and people can't hear it clearly when they speak, that is, the paper cone is broken, the rubber edge is degummed, etc., you need to change the horn if you destroy the fight, of course, consumers are not good to buy in the market, the easiest way is to contact the dealer, or you m I tell me the style and model, as well as the size of the speaker, I will help you find.

LS said that the noise is the current sound of the power amplifier is acceptable,I can't agree with this,If you rule out the sound source problem,MBZ speaker's signal-to-noise ratio S n should not be so bad as that。 The above problems may occur if the amplifier is loose or the welding feet are unstable.

The best way is to find a dealer, he makes so much money through the middle channel, he has to do something, right?

1. Check whether there is a problem with the ** document you judged.

2. Use other equipment to check if there is a problem with your speaker.

Is it that your requirements are too high, what is the noise, you can describe it, if it is a slight current sound, then it is still a rock sleepy annihilation, it may also be a problem with the sound quality of your ** device, or it may be a problem with your sound rough punch card, you describe it clearly!!