The sound in bluetooth headphones is interrupted. how to fix it?
Life without wires is beautiful. Manufacturers produce models without headphone jacks, thereby encouraging consumers to replace old “wired” ears with modern Bluetooth headsets. But unfortunately it’s not all so clear-cut. there are two problems: if you compare it with a similar wired model, the sound is rather average, and during the playback there can be short delays. Can not the major manufacturers make decent models?? We will tell you what these problems are and how to deal with them in this article.
There can be many reasons for poor sound quality, and to determine them you need to understand Bluetooth technology.
Bluetooth is based on the use of electromagnetic waves in the license-free ISM band (2.402 to 2.4835 GHz).
Consequently, when transmitting sound, 2 devices must be involved:
- bluetooth transmitter (smartphone, tablet, laptop or PC), in which the analog audio signal is encrypted into digital, compressed and converted to radio waves using a built-in module;
- Bluetooth receiver (in this case, wireless headphones) which decodes radio waves using a Bluetooth module into an analog audio signal.
At the same time, the Bluetooth version influences the range and speed of connection, and the sound quality. profiles and codecs, which must be supported by both the transmitting device and the wireless headphones.
If the device and the gadget have different versions of Bluetooth, then the connection will be through an earlier version of one of the devices.
The sound in the headphones (Head Set) disappears for the following reasons:
Long distance between the transmitting and receiving radio waves.
Causes of noise
Noise, hissing, other interference are influenced by factors:
- External mechanical damage, contamination of the dynamic transducers in the Head Set;
- interference from other Bluetooth devices or household appliances that emit electromagnetic waves nearby;
- Over volume in the receiving device’s settings.
Improving Bluetooth connectivity
Your headphones are connected via Bluetooth, and in some situations, the Bluetooth signal may be intermittent or weak.
When streaming audio, the connection to your headphones may be lost more often than when playing content that is stored on your device. With the device about a meter away from you, try listening to music or other audio content stored on your device through your headphones, i.e. е. Not in streaming playback mode. On your iOS or Android device, open the Music app. On a Mac with macOS Catalina, open the Music program. On a Mac computer running macOS Mojave or earlier, or on a Windows computer, open iTunes. Then play the song with no download button next to it. Or click the download button. To load a song.
If the sound in the headphones plays without distortion during this test, then the following recommendations may help you in other situations.
- Keep your iPhone or other device close so that there are no obstacles between you and it, such as walls or interstory ceilings.
- If possible, relocate, especially if it’s a location with lots of people or heavy Wi-Fi use, poorly shielded cables, microwave ovens, and wireless speakers (or just turn off the oven or speakers).
First, you have to rely on the hardware. the DAC
The vast majority of the music we listen to today is stored digitally. The only exceptions are fans of audio CDs, records, tape cassettes, and other vintage media. When it comes to playing audio files written in the form of ones and zeros, we should immediately understand that no speakers can perceive such information in this form, and our ears cannot hear it. You need to convert the digital format to analog sound. that’s when the whole bundle will work, and it’s the DAC or digital-to-analog converter that’s responsible for that.
Any device which plays back digital sound must be equipped with a special DAC and amplifier.
Yes, your smartphone has both a DAC and an amplifier. even if it’s not considered an audiophile gadget. But if you’re using wireless headphones, in that case it’s the digital signal that’s being transmitted via Bluetooth, so it’s up to the headphones to convert it into analogue, they have a DAC and an amplifier for that. Remember, any wireless device that is designed to play sound. not just headphones, but speakers and other gadgets. must be equipped with a DAC and an amplifier.
Previously, wireless headphones came with the most rudimentary, cheapest amplifier and D/A converter. over, the manufacturers have used absolutely no engineering solutions to isolate the circuit and prevent interference that may be produced by other devices.
This is very important, because if there is something like a power circuit in close proximity, it can cause enough electrical noise that, without protection, it will interfere with listening to music or any other audio. It resembles the hum that is often well discernible in complete stereo systems in cheap car models-it’s a terrible sound that’s annoying.
Wireless headphones should use really good quality components, but just as important is how such a gadget is designed.
If you want to enjoy listening to music with wireless headphones, it is important that the engineers have designed the appropriate device correctly. The thing is that when the DAC converts the signal from digital to analog, it sends it to the amplifier, because the signal itself is too weak to have any effect on the speaker movement and create sound.
Because of the small space available, wireless headphones do not use any incredible amplifiers. most often they are in the form of transistors that are part of the circuit board. An amplifier of this kind must be designed so that the input amplitude matches the correct output level to prevent any possible distortion and other interference. over, it should also be electrically isolated.
It’s complicated enough purely technically, but all you need to know is that the manufacturers of wireless headphones that work via Bluetooth are doing a really great job of making something really sensible. Each pair combines not only high-end hardware solutions, but also engineering talent. Only all of this adds up to a really good sound.
How to Adjust Headphone Volume on PC
You need the latest drivers for your sound card in order for your headphones to work properly. Use the Snappy Driver Installer to perform a quick software update. The utility will automatically detect which drivers need to be updated, download them and install them on your system. Then go to the Control Panel by pressing the START button and look for the Sound icon.
Once it is open, locate the Headphone Assignment window, then move to the Levels window, and after that to the Balance tab. In this tab adjust the sound parameters of the device. Next, to increase the volume of the wireless headphones, switch to Advanced Features and activate the Volume Leveling function.
After all these manipulations the sound in the headset will become significantly louder. But they can reduce the dynamic range of audio, because the sound card will reduce the perception to the average values. To improve the sound, click on the Advanced tab and change the frequency and audio bit rate. To test how the upgraded sound sounds, press the Test button.
Why the sound lags in wireless Bluetooth headphones
First of all there are some important nuances concerning the audio transmission via Bluetooth which are worth to know and take into consideration:
- There is always a delay in the transmission of sound via Bluetooth: somewhere the lack of synchronization is clearly visible, somewhere it is less noticeable and can be ignored.
- The delay time may depend on the specific device (smartphone, Bluetooth adapter on laptop, headphones themselves), the profile and codec used (SBC, aptX, LDAC and others) for audio transmission, the quality settings of the transmitted sound.
When transmitting sound via Bluetooth it is encoded in a special way at the transmitting device, then transmitted wirelessly to the headphones where it is buffered, converted from digital to analog signal, and only then you hear it.
Each of the stages can take some time, and, judging by the tests, even the first two steps on some smartphones regardless of the codecs take about 500 milliseconds (half a second), which is already hard not to pay attention to. However, in many cases we have the ability to reduce the delay in Bluetooth audio transmission and reduce the lag of sound from video and games.
Poor sound quality
Poor sound quality when you connect Bluetooth headphones to a personal computer is more often due to the presence of a microphone.
Windows defines Head Set in two ways as:
In this case the HFP profile is activated in Windows. with a microphone plugged in, you can listen to the tracks in mono mode only. To improve the sound quality you need to change the profile.
- After connecting the headphones to the PC, enter the Sound Control Panel.
- A new window will pop up and you will have to select the “Playback Devices” line.
- In the new window bluetooth headphones will be displayed twice as “Headphones” and “Headphone”.
- Right-click on “Headphones” and then select “Use Default” and confirm by clicking on “OK”.
- After all manipulations Head Set should play a clear, high-quality stereo sound.
Specific problems exist with the products of each particular manufacturer. The principles of connection, use and problem solving for all Bluetooth devices are common.
There are a few of the most common malfunctions. Among them:
- Earphone doesn’t turn on or doesn’t turn off;
- Unexpected connection or disconnection from the source;
- Bluetooth module conflicts between devices;
- Requires re-pairing;
- Ability to work only next to the main device (phone, PC, tablet).
Only one earpiece is working
The most common causes of single speaker failure are listed in the table below.
|Causes of Failure||Solution|
|Dirty||Clean with an appliance cleaner|
|Deformed or dead battery||Battery replacement at a service center will help|
|The headphones are far away from the main device||Reconnect and shorten the distance between them|
|Error when pairing devices||Requires reboot, reconnection|
|Incorrect software source settings||Rebooting the devices, reflashing, updating drivers|
|Damaged Bluetooth module, incompatible versions of Bluetooth headphones and pluggable device||Update the smartphone or replace the headphones with a more modern one|
If the performed operations did not help, it is likely that the reason why one wireless headphone does not work is related to the following:
- Damaged wire inside headband or failure of one speaker if these are overhead headphones;
- Damage of the inner part of the headphone, contamination, mechanical effect, humidity. if these are vacuum, in-canal devices (small headphones).
Such defects can only be solved in service centers or by replacing the device.
There are two main reasons for the lack of sound:
- Check the charge level. Recharge the battery if necessary.
- Reboot headphones and smartphone.
- Test on multiple devices, connect them to different phones, smartphones, PC or tablet.
- Check the headset for mechanical damage.
- Check for compatibility of Bluetooth versions.
The headset suddenly stops working
One common problem is that when fully charged and successfully paired, the headphones do not work.
In both cases you need to promptly intervene in the headset, replace the battery or buy new headphones.
The battery in wireless headphones can not be replaced by yourself. It requires the re-soldering of small wires. Only authorized service center technicians can do this.
The sound disappears
The root of the problem is the quality of the headset. Cheap models can be frustrating with the results. Another reason is the difference in standards (versions) of Bluetooth in the headphones and the connected device. If the user buys headphones for a particular gadget, such as a phone or smartphone of a particular brand, first of all, you need to check the compatibility of Bluetooth versions of both devices.
There may also be the following causes when sound in headphones may be lost:
- Low charge of both devices;
- Weak Bluetooth signal or spontaneous disconnection;
- Electromagnetic radiation from other equipment nearby;
- There is a problem (e.g., app conflict) on the smartphone;
- Insufficient power of the smartphone, not enough memory for running operations.
Bluetooth signal is missing
If the problem is not a factory defect, then the battery.
Causes of unexpected Bluetooth signal interruption are as follows:
- Low battery;
- An outdated version of the Bluetooth module;
- There are obstacles in the way of signal transmission (household appliances, other radios or Bluetooth modules);
- headphones and the device are at a distance greater than allowed;
- Your playing device is malfunctioning;
- External weather conditions: temperature is too low or too high;
- Dust, moisture or dirt on the speakers.
Make sure that Bluetooth is active on both devices. If the function is active but pairing is not happening, it’s worth restarting the gadgets and checking the headphones with other devices. Also need to check the charge level on the devices. On your smartphone, turn off any extra functions or apps that are running.
How to fix headphone problems
To try to solve possible difficulties in using the wireless headset, you need to do one of the following things:
- Charge the devices (PC, smartphone, tablet etc.) fully and restart them if necessary.).
- Verify that you have selected the correct device for pairing from the list of suggested devices (by name).
- Make sure the volume is turned on.
- When using an MP3 player, you need to know if the decoder can read audio files placed on the memory card. Some models can only play sound in MP3 and WMA format, ( for this read the manual of the headphones)
- Check to see if the headphones work through the cable when turned off. If yes, the sound transmission problem is in the Bluetooth channel compatibility. The solution is to use another compatible device or install the appropriate software.
My smartphone can’t find my Bluetooth headphones
So, if you want to connect the headphones to your smartphone, but for some reason the headphones don’t show up in the list of Bluetooth devices, here’s what to do. Check Bluetooth on both devices first. And if it’s easy to do on the smartphone, on the headphones you often need to press a certain combination of keys. Just do it again. It did not help? Then it is worth checking if the headphones are compatible with your version of the OS. And if with the latest models of smartphones and “ears” usually no problems arise, but with older gadgets sometimes have to tinker. Typically, headphone manufacturers will post fresh firmware versions on the website so that you can fix this problem.
Next it is important to understand that in order to pair the devices must be close enough to each other and there must not be any obstacles between them. In addition, you may be obstructed by other Bluetooth gadgets that are working at the moment (and they may not necessarily be connected to your smartphone). So just in case temporarily disable smart watches, bracelets, smart speakers and other devices that “clog” the Bluetooth signal. It is also worthwhile to turn off Wi-Fi. Despite the fact that these standards practically “do not overlap” some common frequencies they do have.
Crackling and noise in wireless headphones
The last point is not about my personal observations, but about what some people complained to me when writing in my personal message or in our Telegram-chat.
They claimed to have encountered a problem that caused the headphones to crack and squeak, as if something was picking up static. In this situation I could only advise to try to re-tie the headphones to the device. And, miraculously, it worked. I can’t explain why this happens, but I really don’t like it.
Korg’s expensive musician app has gone completely free because of the coronavirus
Like the old joke about the programmer who, if his car won’t start, gets out of it and gets in again, almost all chronic problems with wireless headphones (other than malfunctions) are cured by rewiring to the phone.
Even though there are such nasty points, it’s still not an argument for me to switch to wired headphones. Freedom from wires is really freedom. No one is saying that you should go back to corded phones because they sound better and you don’t have to charge them. There are so many things around us that need to be charged that headphones are definitely not superfluous.
This week was full of not very high-profile, but somewhat interesting events. For example, Google summarized the year and named the best extensions for the most popular browser Google Chrome. It included so many interesting options that even your eyes are diverted and you want to try everything you have not yet downloaded. Not the year’s total, but an interesting update was made to Telegram this week, with its new features. And we also learned a lot of good things about the Xiaomi Mi 12 and realized what we have to prepare for, because there is not much time left before the release of the novelty. All of this and much more of what we remembered the past seven days, we summarize in our traditional news digest.
The announcement of Android 12L was a surprise to many of us. Although we were getting ready for a minor update to the main Android 12 lineup, we didn’t think a standalone version would arrive so quickly. The novelty demonstrates the efforts of Google in creating a separate operating system for devices with large screens. In fact, this update has really become so important that it deservedly got its own name and apart from the usual version will be the subject of a program of preliminary testing for developers. For now, let’s understand how important this operating system really is for the company and what it will bring in the future.
I am sure that you use your gadgets carefully and try to minimize their impact on your own health. For example, do not put them under the pillow when you sleep and leave them away from the bed. I think everyone sooner or later had the question: should you turn off the Internet on your phone, and when should you do it?? A smartphone makes no sense without an Internet connection, but there are situations where connecting really makes no sense. For example, turning on the Internet on the phone at night. Let’s find out when you should turn off the Internet on your phone and whether it’ll drain your battery.