They are getting more and more widespread. Smartphone manufacturers themselves are pushing to make a purchase, eliminating the 3.5 mm audio jack from new models. Everything would be fine if not for one "but". The sound quality in wireless headphones is often average or even poor. And the user may experience audio delay in Bluetooth headphones. What caused these two troubles? Is it possible that large companies still cannot come up with a normal method of transmitting sound over the air?

If it is quite possible to put up with the average sound quality, then when the music is interrupted, it quickly infuriates. These second or even half-second pauses make you return to wired headphones, connecting the accessory at least through an adapter.

Unfortunately, it is almost impossible to find out the exact causes of micropauses. The fact is that Bluetooth is very different from the same Wi-Fi - this method of signal transmission is less standardized, and the power of the "blue tooth" is often not enough. If Wi-Fi quietly penetrates even through the walls of the house, then even the lining of the jacket can interfere with the Bluetooth signal. That is, try to pull your smartphone out of your inner pocket - it is possible that the purity of synchronization will improve significantly.

Unfortunately, the sound in Bluetooth headphones is delayed even when the accessory is right next to the smartphone. This indicates the low compatibility of the chip in the headset with the module in the phone. It is possible that some unsuitable codec is used last. After all, if you did not know, not analog, but digital sound is transmitted through the air. Headphones still need to decrypt it, only after that playback occurs. If the electronics in the product is not the most powerful, then from time to time micropauses can really occur.

If you are just about to buy Bluetooth headphones, then be sure to check out technical specifications accessories. Try to choose an instance that supports exactly those profiles that are built into the Bluetooth of your smartphone. It is also desirable that the version of the "blue tooth" is also the same. In particular, now many smartphones have Bluetooth 4.0 on board - a wireless headset should also have a similar version.

If the headphones are connected to a computer, then to eliminate the interruption of the sound, you can “play around” with the settings music players. Change the sound output from DirectSound to WaveOut - sometimes this can help. Unfortunately, in smartphones, there are noticeably fewer Bluetooth connection settings, so you can’t really indulge in experiments here.

Bad sound

The sound quality depends on several factors. Basically, this parameter is affected by the Bluetooth version. In each fresh version, some new profiles and technologies appear. For example, now smartphones and wireless headsets are gradually switching to the AptX HD codec, which provides sound transmission in almost CD quality. If you are not limited in financial resources, then it is better to purchase an accessory with support for just such a codec. But do not forget that then you will need an appropriate smartphone.

The sound quality also depends on the music files being played. Pay attention to the bitrate of MP3 music - files with a 320 Kbps parameter will have the best sound. Real music lovers should switch to files with a lower compression ratio - for example, FLAC. Such music will weigh more, but on the other hand, when saving these compositions, they did not cut out too high or too low frequencies. However, an increased bitrate can lead to micro-pauses - the data transfer rate via Bluetooth is very limited.

Of course, first of all, the purity of the sound depends on the design of the headphones themselves. It's stupid to expect good sound from the simplest "plugs" for 2000 rubles. Do you want to enjoy music without using wired connection? Then you have to fork out for an expensive headset from a well-known manufacturer. Difficult to choose? Focus on the collection.

Conclusion

Alas, modern wireless technology, which serve to transmit sound, do not allow you to somehow play around with the settings. If there are any problems, then this most often indicates poor compatibility between the headphones and the smartphone. And in the case of insufficiently good sound, the unfinished design of the headset (or a weak chip) should be blamed. That is why when choosing wireless headphones should not save.

Causes of noise in headphones:

You connected your headphones to a computer or laptop, and instead of pleasant and beloved music, you hear an annoying hiss or crackle, who would like that? At the same time, you do not understand why there is noise in the headphones, where it came from and what to do with it.

The most frustrating thing about the effect of noise in the headphones is that it is very difficult to find out what caused it and how to eliminate it. There can be many reasons for crackling in headphones, the usual algorithm for finding the cause of poor headphone performance is to sequentially enumerate potential sources of noise, exclude or isolate them and further check. In theory, this looks simple, but in practice, such an algorithm is completely impossible to implement.

For example, you have only one computer that is connected to an outlet that is embedded in a concrete wall, the apartment has been renovated and it is impossible to install the computer in another place, or another room, because. there is no place for him. And therefore we are unable to exclude all possible causes of the occurrence extraneous noise in headphones.

However, we can start with the simplest and most obvious potential causes of headphone interference, and if checking them fails, we can only hope that this problem will fix itself in the future. For example, the neighbors will turn off the puncher, or after a while you will buy a voltage stabilizer through which you will connect the computer.

So, let's start searching for the cause of the hiss in the headphones.

Cable damage is a very common cause of hiss and pops in headphones.

Let's start with the simplest and most common cause of extraneous noise in headphones - a damaged cable or poor contact in the jack.

Carefully examine the headphone cable, it must be absolutely intact, there must be the same density throughout its entire length. Feel the entire cable with your hands, perhaps there was an interruption in some place inside the cable, or once you bent the cable too much and the copper wires inside it broke.

If, after a visual and tactile check, the cable does not raise suspicions, check the jack, its joints and the audio jack itself into which you plug the headphones.

Check how well you insert the jack into the socket, it should go in easily, with a slight click and stay firmly in it. The jack must enter the nest to the end, there should not be a visible part of the jack.

Sometimes, due to the structural features of the nest, about 1 mm of the jack remains visible, but no more and this is a rare phenomenon.

Bad contact is one of the most common causes of noise and crackling in headphones. Wipe the jack with a dry soft cloth, it may be dirty or covered with a layer of oxide.

If the wire does not cause suspicion and the jack is connected to the socket securely, but the noise remains, you need to continue the search.

The technical condition of the headphones - a possible cause of white noise

After checking the wire and jack did not work, you must definitely check the headphones themselves.

Carefully inspect them, they may have recently fallen on a hard surface, cracks or other signs of damage have appeared on the case.

Be sure to try connecting your headphones to another audio source, such as a phone, TV, or tablet.

It is very important to understand and establish that the cause of white noise in the headphones is not the headphones themselves, but the device to which they are connected.

If when connecting to another device White noise disappeared, which means that the headphones themselves are in order along with the wire and the jack, and we proceed to further search for the occurrence of crackling.

Inexpensive speakers can cause headphone noise

If the noise in the headphones occurs when connected to a computer or laptop that is connected to inexpensive multimedia speakers at the same time, first try disconnecting the speakers and check if the noise in the headphones has disappeared.

The fact is that inexpensive speakers are assembled from cheap elements, but most importantly, when they are assembled, they save a lot on soldering, wires and the general level of construction. Therefore, poor contact or short circuits may occur inside the speakers, which will interfere with the entire electrical circuit, resulting in extraneous noise in the headphones.

Speakers must be turned off completely, not just turned off their power.

If completely disconnecting the speakers from the computer did not resolve the noise in the headphones, proceed to the next troubleshooting step.

Lack of grounding is the most common cause of noise in headphones when connected to a computer

For some reason unknown to me, in many homes sockets are not grounded. In general, this is not so bad, traditional household appliances such as irons, heaters, filters and air conditioners work fine. But as soon as you connect equipment that is very sensitive to the quality of the power supply to an ungrounded electrical network, problems immediately pop up.

A computer connected to an ungrounded outlet is a direct road not only to noise in the headphones, but also possible reason failure of the computer as a whole due to exposure to static electricity.

The normal way to solve this problem is to ground the outlet that the computer is connected to. But doing it yourself is not easy, if not impossible. To do this, you need to call an electrician, however, in this case, most likely, you will have to shift the wiring throughout the apartment, and this is already a serious repair.

There is an easy way to check if grounding really helps eliminate noise in the headphones - throw a wire from the computer to the battery.

You need to take an ordinary copper wire of a small cross section, on both sides with bare contacts. Lean one end against the computer case (preferably against its back wall), and the other against the battery. Leaning the wire to the painted part of the battery is useless, you need to lean it against the metal of the battery, so you have to look for such a place. Usually bare metal can be found on the back of the battery.

If you did everything right, and the noise is gone or significantly reduced, then it's about grounding.

Remember: you can not count the ground through the battery permanent solution. Such grounding can lead to a complete failure of the entire computer, it is enough for your neighbor to ground serious equipment to the battery, as the computer, having received a powerful discharge of electricity to the case, will fail. This is just a test, nothing more.

But what if you know for sure that the sockets are grounded, and the test with the wire did not work? We continue to search for cod in the headphones.

Microphone noise is one of the many causes of interference in headphones.

We have reviewed possible sources noise problems in the headphones, which relate to material interference, but now we are left with problems that relate to the setup of computer equipment.

One of the most common causes of noise in headphones is noise from the microphone of the sound card.

Even if a microphone is not connected to your sound card, there may be noise from the microphone jack.

In order to test this hypothesis, you need to go to the volume settings of your sound card, find the slider that controls the microphone volume level and lower it to zero. Or, if possible, turn off the sound from the microphone altogether.

If the microphone input was the cause of the noise in the headphones, then muting the sound from it should completely correct the situation.

In order to get to the microphone volume settings, open the control panel, find the item "Hardware and Sound" and go into it.

Now find the point "Sound" and go into it.

In the sound settings window, go to the tab "Record", then find the active microphone (in my case it is the Sound Blaster ZxR microphone), select it and click on the button "Properties" in the lower right corner.

In the new window, find the tab "Levels", and either move the microphone volume slider as far as possible to the left until its value reaches zero, or click on the blue speaker icon, which is located to the right of the volume level indicator. A red crossed out sign should appear next to the speaker. This icon will indicate that the microphone is completely disabled on the system. It is preferable to turn it off, and not just lower the volume level.

One type of problem with the microphone input or the microphone itself is its high sensitivity. This problem can be solved by turning on the microphone noise reduction mode.

Almost all modern sound cards have this mode. If you find out that the microphone is the cause of the crackling, but you need it, then try turning on the noise reduction mode if it is available. This should fix the issue.

A problem with the volume level of sound sources in the sound card can cause hiss in the headphones

Not only microphone interference can cause hiss in the headphones, the same interference can also be caused by adjacent sound card inputs.

Depending on the sound card model, it may have additional inputs for connecting additional equipment. They may have the following names:

1. What U Hear
2. Line in
3. S/PDIF

Any of them, under certain circumstances, can become a source of interference. In the same way that you lowered the microphone volume, you need to reduce or completely turn off the sound from all these sockets.

To do this, go to the panel Windows controls.

Then find the item there "Hardware and Sound".

Then click on the section "Sound".

In the new window, go to the "Playback" tab, select active speakers (a device that plays sound in headphones in this moment) and click on the "Property" button.

Next, I can’t take a screenshot, because. in my case, the volume level of all inputs and outputs is regulated through a special software that controls my sound card Sound Blaster, in your case, there will most likely be a tab available "Levels", by going into which you can disable all inputs and outputs of your sound card.

To check, leave only the headphone output turned on, and turn off all other possible outputs and inputs or turn their volume down to zero.

If the headphone hiss problem was at one of these points, it should go away.

Volume level - paradoxical, but true, it can cause noise in the headphones

In some cases, the volume level may cause interference in the headphones.

Sometimes it happens that the headphones have their own volume control, plus there is an additional volume control in Windows, and there is also a volume control in the application from which you are listening to the sound (game, player).

For any hardware that has its own hardware volume control to work well, you need to make sure that all software volume controls (especially the main volume slider in Windows) are set to 100%. And the final volume control is done precisely with the help of a hardware volume control.

To eliminate the hiss, follow these steps:

1. Completely turn off the sound in the headphones using the hardware control (buttons or knobs on the headphones themselves)
2. Set Windows Volume to 100%
3. Set the app volume to 100%
4. Start to gradually increase the volume on the headphones and bring it to a comfortable level.

The fact is that software volume controls artificially reduce the sound volume, after which you have to turn the volume up to the maximum in headphones in order to listen to it at a comfortable level. However, for any equipment, be it headphones, speakers or a car engine, prolonged operation at the limit of the possible is extremely detrimental to the characteristics and properties of the unit.

By setting the hardware to the maximum volume on the headphones, you amplify all the noise that comes from the computer, plus you add the distortion that appears in the headphones themselves at maximum sound level.

Therefore, you need to adjust the volume using the method that I indicated in order to minimize possible distortion and noise from the headphones themselves, as well as to remove artificial amplification of unwanted noise.

Currently, there are many types of different bluetooth headphones, headsets and speakers that receive sound using this protocol. Very often, when buying inexpensive headphones, there are problems with sound quality, namely sound stuttering and its delay. There are several ways to solve this problem...

The main problem with stuttering bluetooth headphones is the quality of their workmanship and the incompatibility of standards. The problem may be in the insensitive antenna and the power of the processor built into the device. And accordingly, there may be a lack of power on the transmitting device: computer, tablet, phone and bluetooth module inserted into USB port PC, as well as the incompatibility of the BlueTooth version.

It has also been noticed that the headphones work well indoors, but the connection is constantly interrupted outdoors. In a room where there are close walls, the signal bounces off the walls and hits the receiver. wireless headset and everything works great. Where there are no walls, the sound is lost.

It has been noticed that the same headphones work fine on one smartphone, but stutter on another. And it happens that everything was fine, but after installation new program or an app update, audio is out of sync. It also happens when the screen is turned off. mobile device or when the phone goes into locked mode.

Especially often there is a break in the sound when installing, deleting or copying files from a USB flash drive to a USB flash drive. Since at this moment the resources of the system are being used. All this degrades the sound quality in the headphones. If this happens, then it must be borne in mind that the processor power is not enough to compress the sound and transmit it via the Bluetooth protocol.

Clean, loud noise without wires.

The main advice, before you buy a bluetooth headset, check the quality of its reproduction, as they say "without leaving the cash register", right in the store. If this is not possible, keep the receipt and packaging of the goods in order to return it back to the point of sale.

What should I do if the product cannot be returned to the store?

How to solve the problem of sound stuttering in bluetooth headphones?

1. If you have a PC and a USB bluetooth module is inserted into the rear port of the computer. Then transfer the USB-Bluetooth to the front of the PC. Better yet, buy a USB hub on a wire, lift it up and plug the USB-BlueTooth module into it. If the bluetooth adapter is old, then it is better to change it to a newer and more modern one.

Update Bluetooth driver in Windows Task Manager.

2.If you have a PC, change the drivers in the Device Manager to "Sound and Game Devices" and in the "BlueTooth" subsection. Here you need to start the search for drivers Windows tools. To do this, select "Update".

If this does not help, then you should try to put different versions drivers and check if some can work.

When syncing with a PC, older Bluetooth headphones may have compatibility issues with Windows drivers.

3. While outdoors, to avoid interruptions in music playback, place your smartphone as close to the headphones as possible. Shift your smartphone from pocket to pocket, and the higher to the headphones, the better. Or put it in the top, inner pocket of your jacket. Do not use headphones in cold weather.

4.In the player settings or in the audio device settings on the PC, lower the audio stream playback quality, i.e. if you listen to music at 320kbps or more, try no more than 128kbps. Audio mp3 files must be recorded with a low bitrate.

If you have a laptop with weak speakers and when playing the next movie, the volume of the built-in speakers is not enough for comfortable viewing, then you can use the tips to increase the volume on your laptop or phone.

Show more

5. Make the BT mode on the transmitting device "Visible to all". In this mode, the system loads the processor less.

6. Bring the devices closer to each other for a few seconds or pause the sound playback in the player or youtube, this is necessary to synchronize the devices. For full synchronization sound may take a few seconds.

7.In Android 6.0 in the settings there is an item: "App Permissions", in it "Transmission via bluetooth". Here you need to uncheck all the boxes except "Volume". Here we click: "Change Settings" and select the item "Do not disable".

8.Android OS kernel can be overclocked through special programs types: SetCpu, Tasker, Antutu CPU, Tegrak, OverClock and others. Changing the parameters of the OS is done in the "Performance" section. The following values ​​need to be changed: Governor to "perfomance", Scheduler to "cfq". They also recommend this solution: setting Kernel Adiutor with CPU Governor to ondemand (+ "Apply on boot" for convenience).

9. You can reduce the load on the system using special software. There is such a Droidwall program that can control Internet access for each Android OS application. To reduce the load on the processor, prohibit applications that are not needed at the moment from accessing the Internet. This can be done through the program menu.

10. Soldering the antenna in the case of headphones or bluetooth speakers. If you remove the case cover, then the board should have a snake-shaped track. Craftsmen solder a piece of copper wire 4-5 centimeters to this track. After that, the signal quality improves and the sound stops stuttering.

Video: My Perfect Imps wired headphones bluetooth.

Video: 5 Bluetooth headphones. Parcel from China.

11. You can also reduce the processor load on your PC by turning off the microphone on the bluetooth headset. To do this, go to Control Panel => Sound => Recording => Microphone => Properties => Listen => uncheck "Listen from this device". And restart your computer.

12. Interference from other devices greatly affects the quality of the connection. If a wireless speaker or the sub is standing next to the router, TV, computer, microwave and other sources of radio interference, then it / it must be moved away.

13. A poorly charged battery is the reason for the lack of processor power of the bluetooth device.

14.Older models of bluetooth headsets may not be compatible with new smartphones and vice versa. This is the main reason for instability and stuttering of music. Therefore, before buying a wireless device, you should always check whether these two mobile devices will connect well.

You can read more about the BlueTooth protocol in an article on habrahabr.ru. It analyzes the signal loss process with screenshots and graphs.

Analysis of the impact of the human body on the power of audio data transmission via the BlueTooth protocol.

The picture above shows that the dump shows that the bitpool value for this portion of traffic is 48, but as soon as I closed the path from the laptop to the column with my body, the bitpool value began to decrease, accompanied by interruptions and clicks.

Show more

After the bitpool value settled down to 30, the clicks disappeared and audio playback became continuous again. Everything indicated that the codec performed autotuning, noticing the degradation of signal quality.

But did I really bring in such a significant attenuation with my mortal body? Well, it's time to take a look at the received signal strength indicator graph.

The world has stepped into the wireless era. Keyboards and mice, data transfer, Internet access - everything has long gone away from cables. However, there are still certain things that literally hold us like a stone in this terrible world of wires. And besides the most obvious - for example, chargers, there are also less noticeable, but far from less important accessories - headphones. After all, you must admit, not everyone has to think every time about where and how to “poke” the wire just to go out into the street. And when playing sports, it’s better not to remember about headphones at all. Why, didn't it ever annoy you that you had to take them off to get up from the computer? Therefore, for many, the issue of buying wireless headphones is quite acute. It would seem that there is everything for this - on this moment this market is already saturated enough to find a suitable option for yourself. But, unfortunately, there are a number of problems. After all, in fact, bluetooth headphones have not made significant qualitative breakthroughs since their inception.

But on a certain day, such a question arose in front of me. Being confident that by the current year the technology had already matured, I quickly chose my gadget - Jabra Halo 2. [Digression]: Yes, you can say that Jabra Halo 2 is not an indicator and a bad example. However, not every average buyer can afford advanced technology like or - although it is possible that they will be devoid of all the shortcomings listed below. Moreover, even Jabra Halo 2 cannot be called budget - let me remind you that for the same one thousand hryvnia you can buy quite serious wired headphones [end of digression]. And after almost a year since the start of operation, I am ready to tell about all aspects of life with middle-class bluetooth headphones.

The first minus surfaced almost immediately - as soon as the phone is in a jeans pocket, the signal starts to get lost. I had to put the phone in the pocket of a jacket, jacket, or in a bag (however, it turned out that the connection is much better in the right jeans pocket, but this did not completely solve the problem). And in general, audio interruption is the most common problem. Interference can catch you literally at any time, and they are so nasty that you start to involuntarily turn the phone in your pocket in search of the "optimal position". Moreover, it happens that the environment affects the signal - near the local stadium, for example, interference is almost always observed. Also, the gap will haunt you in the first minute or two after connecting to the device.

The second issue is the sound quality. Yes, in fact, bluetooth headphones sound great - but with a wire connected. On a wireless connection, they are only suitable for listening to podcasts, radio, watching YouTube videos and chatting with friends. Music connoisseurs will turn up their noses in disbelief (and rightly so), although not particularly picky users(like me) and those will be satisfied.

And it is logical that the speed of work is a little lame. From the sound itself to its playback in the headphones, it takes some time within a second. Moreover, from the very first day, the user will notice that before starting to play the sound, the headphones will turn on a barely noticeable noise (it is completely lost against the background of the music), and when the playback is over, this noise will disappear, while with a rather sharp click, which on high level The volume level can hit your ears quite a bit. However, you can quickly get used to this.

And at least these three minuses already predetermine the fate of wireless headphones. They have no practical meaning. It can be seen that this direction is gradually developing, but at the moment it is a waste of money. There is a feeling that the market exists in order for it to exist at all - but there will still be a user. Believe me, freedom from wires is not worth all the above problems. Although there are positive aspects of using such headphones, my advice to you is: either buy expensive bluetooth headphones, or take good and wired ones.

Despite technological advances, Bluetooth headphones still suffer from some annoying issues.

We've looked at the most common Bluetooth headphone problems and come up with a few solutions.

My smartphone cannot find the Bluetooth headphones

Do you want to connect the headphones to your smartphone, but for some reason the headphones do not appear in the list of Bluetooth devices? Here is a list of how to fix the problem:

• Check if you have indeed turned on the Bluetooth connection on your phone. Surprisingly easy to miss.
• Check if your headphones are compatible with your device and OS. If you're using an iPhone, it should run at least iOS 7, which natively supports "Bluetooth Smart Ready". If you're on Android, make sure it runs at least Android 4.3.
• Make sure your smartphone and headphones are close enough to each other when you want to connect them. The best way to ensure a good connection, it is to move the devices at least 50 cm apart.
• Check the manufacturer's recommended connection process. Not all Bluetooth headphones will connect to your phone in the same way; sometimes it's as easy as just turning on your headphones, other times it's a bit more complicated. To avoid connection problems with your device, carefully read all the detailed steps on what you should do.
• Try turning them off and on again. This is old method but let's face it - sometimes it really works.
• Turn off or remove all interference. Perhaps for some reason your headphones are trying to connect to another device and not to your smartphone.
• Move away from the Wi-Fi router. Perhaps your wifi router uses the same spectrum as the headphones and thus causes some interference.

My Bluetooth headphones keep turning off intermittently

There is nothing more frustrating than listening to music when all of a sudden your Bluetooth headphones just turn off. Sometimes the Bluetooth connection goes completely off and forces you to reconnect, other times it will drop out for a few seconds before it reconnects. These problems are easy to solve:

• Stay within the range of your headphones and smartphone. It is very easy to move far from the smartphone and the bluetooth will not work.
• Delete all unnecessary Bluetooth connections. It is possible that your smartphone is "overloaded" with the number of attempts to connect to it.
• Make sure your Bluetooth headset is well charged. Bluetooth headphones tend to intermittently turn off when the battery is low.
• Try disconnecting the headphones and then pairing them with your smartphone again.

The connection between my headphones and my smartphone is unstable

It also often happens that when you try to connect your headphones and smartphone together, you will either get an error message, or the pairing process will work erratically - without actually connecting. The simplest solution is here:

• Delete any unused or unnecessary Bluetooth connections. Some devices start to freeze if there are too many devices in the Bluetooth connection list.

If this does not help, you can try any of the other methods we have already indicated.

I hear noise in my Bluetooth headphones

Despite having come a long way, Bluetooth technology is still prone to interference such as static or crackling noises when you're listening to music.

• First, you must disable or turn off other unused Bluetooth devices in this district.
• If the static doesn't go away, try resetting your headphones (you can easily figure this out by consulting the manufacturer's website).
• Turn on the media player, then unplug the headphones for 30 seconds and then plug them back in.
• Reduce the distance between your smartphone and the headphones, as this also helps to reduce (or even solve) any noise problems.

These are all proven methods for solving some of the most annoying problems. bluetooth problems, but this is not a complete list. If none of these troubleshooting methods work, it's best to contact the manufacturer directly.

Have you tried any of these methods for troubleshooting native Bluetooth devices?