Apparently, many were faced with the fact that in the columns connected to computers, amplifiers, music centers and other household appliances, sometimes extraneous noises may appear, usually called pick-ups or backgrounds. But why do loudspeakers sound, for example, in those cases if you just purchased and connected them? Why do noises appear not immediately, but over time? And in general, how to get rid of this scourge? Let's try to identify the main causes of this phenomenon, and then decide on some of the most effective methods that will help correct the situation.
Main reasons
The main, as it is believed, the cause of the appearance of extraneous noise and distortion is the occurrence of precisely all kinds of interference. This may be due, say, to incorrect settings of the connected microphone, improper grounding of wires, incorrect connection of loudspeakers to the signal source, and indeed, the speakers themselves became unusable, not to mention the main sound-reproducing technique.
Why the speakers fonit from the amplifier: physical problems
With household amplifiers, the greatest number of problems is observed, since in the same outdated models, the connection of acoustics is usually done exclusively using wires. It is possible that the cables are not well shielded, the plugs do not fully fit into the corresponding jacks, etc. Sometimes the answer to the question about why the speakers are loud is even simpler.
The fact is that in some amplifiers for connecting acoustics, not special sockets are used, but peculiar “crocodiles” in which bare wires are simply clamped . It is clear that there is absolutely no sense in shielding such a cable directly at the input, but noise can be eliminated by deeper inserting the wire into the connector (in addition, the two wires inside the main cable should not touch and shorten). In addition, pay attention to the fact that when using wires that are too long, noise can occur in them solely because of such elongation. And the voltage drops in the network can cause similar phenomena.
But we can assume that the above symptoms do not manifest themselves. So why the speakers in the car, for example? Obviously, in addition to a loose connection, the reason may lie in the device itself, from which the signal is output to the speakers.
And quite often, many experts explain the appearance of the background by the fact that capacitors “flew” on the preamplifier. Sometimes noise may not appear immediately, but gradually. In this case, for sure, the capacitors just started to dry out. If there is no opportunity to replace them yourself, it is better to acquire new elements.
What is the reason for the appearance of the background on computer speakers?
Now a few words about why the speakers on the computer or laptop are fonning. Quite often, this may be due to the type of sound card installed. This is especially true for integrated chips, which on the motherboard can be located in close proximity to the video card, which can also have a built-in audio adapter (alas, this also happens).
Often, the cause of the noise can be the cooling system, when the tip appears due to the operation of the fans. It goes without saying that a power supply that does not correspond to the parameters of the motherboard can also provoke the appearance of such interference. If we talk about why the speakers are built-in or external type on a laptop, the problem narrows down quite a lot. The fact is that almost all laptops are equipped with built-in microphones and the signal level that is set for them in the system settings is too high, not to mention the fact that some users manage to turn on signal amplification to the maximum as well.
Finally, we should not forget that third-party household appliances such as conventional microwave ovens can also give such tips during operation. For all devices, regardless of their type, you cannot use multiple tees connected to the same outlet (this is an axiom). It is better to buy special computer units that have a limited number of outlets and built-in protection.
How to get rid of the background programmatically in a Windows environment?
Now that it’s become a little clear why the speakers are lit, let's try to understand the methods for eliminating possible interference on computers. To get started, open the volume mixer and lower the playback levels for all devices and programs to zero, leaving only the overall volume fader at maximum. If you have any more advanced cent installed like Realtek, experiment with its parameters.
It is also recommended to go into the sound settings through the “Control Panel” and on the microphone tab lower its volume (or set the options to those that were installed by default). Just in case, disconnect all additional modules of the spatial environment, and completely remove the signal pre-amplification on the microphone and playback device.
Additional options
If you understand why the speakers began to fade, but this was not noticed before, apparently, this may be due to the sound card.
Through the standard “Device Manager”, try updating the sound card drivers, and if you use speakers connected via USB ports, perform the same procedures for the respective controllers. Sometimes the inclusion of speakers in another port helps. But the ports themselves, if necessary, are also worth checking (in the sense of their “ringing”).
Note: to simplify the task of updating the management software, it is better to use automatic updating programs like Driver Booster.
Brief Summary
These are, briefly, the possible reasons why the speakers are foning, and the methods for eliminating them. Of course, absolutely everything is simply impossible to foresee. However, in most cases, the problems are associated precisely with physical, and not software, reasons (only the overestimated sensitivity settings of the simultaneously connected microphone, which gives a tip) can play a role here. However, updating drivers and even replacing a sound card on a computer should not be discounted.